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{{short description|American physicist, inventor, and eugenicist (1910–1989)}}
{{Infobox Scientist
{{Other uses}}
| name = William Shockley
{{Use mdy dates|date=July 2021}}
| image = William_Shockley.gif
<!-- This article uses the citation templates described in ]. Thank you to RexxS for the detailed tips. -->
| birth_date = ] ]
{{Infobox scientist
| birth_place = ]
| image = William Shockley, Stanford University.jpg
| death_date = ] ]
| caption = Shockley in 1975
| death_place = ]
| birth_name = William Bradford Shockley Jr.
| alma_mater=]<br>]
| birth_date = {{Birth date|1910|2|13}}
| known_for = Coinventor of the ]
| birth_place = ], England
| prizes = ] (1956)
| death_date = {{Death date and age|1989|8|12|1910|2|13}}
| work_institution = ]<br>]<br>]
| death_place = ], U.S.
| doctoral_advisor = ]
| workplaces = {{Plainlist|
* ]
* ]<br />]
* ]
}}
| alma_mater = {{Plainlist|
* ] (])
* ] (])
}}
| known_for = {{Plainlist|
* ] and ]
* ]
* ]
* ]
* ]
* ]
* ] theory
* ] theory
* ] theory
* ]
* ]
*]
* ]
* Gradual channel approximation
* Lucky electron model
* ]
* ]
* ]
* ]
* ]
* ]
* ]
* ]
* ]
* ]
* ]
* ]
* ]
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* [[Reciprocity (optoelectronic)|Van Roosbroeck–
Shockley equation]]
}}
| awards = {{Plainlist|
* ] (1945)
* ] (1952)
* ] (1953)
* ] (1953)
* ] (1956)
* ] (1963)
* ] (1963)
* ] (1980)
}}
| doctoral_advisor = ]
| thesis_title = '' (1936)''
}} }}


'''William Bradford Shockley Jr.''' (February 13, 1910 – August 12, 1989) was an American inventor, physicist, and ]. He was the manager of a research group at ] that included ] and ]. The three scientists were jointly awarded the 1956 ] for "their researches on ]s and their discovery of the ] effect".<ref name=":7">{{Cite journal |last=Borrell |first=Jerry |date=2001 |title=They would be gods |url= |journal=Upside |volume=13 |issue=10 |pages=53 |via=ABI/INFORM Global}}</ref>
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Partly as a result of Shockley's attempts to commercialize a new transistor design in the 1950s and 1960s, California's ] became a hotbed of electronics innovation. He recruited brilliant employees, but quickly alienated them with his autocratic and erratic management; they left and founded major companies in the industry.<ref name=":10" />
'''William Bradford Shockley''' (], ] &ndash; ], ]) was a British-born ] ] and ].


In his later life, while a professor of ] at ] and afterward, Shockley became known as a ] and ].<ref name="latimesobit" /><ref name="NYTimesobit" /><ref name="PhysicsTodayobit" /><ref name=":6">{{Cite web |date=December 26, 1987 |title=Inventors of the transistor followed diverse paths after 1947 discovery |url=https://news.google.com/newspapers?id=nqlJAAAAIBAJ&pg=4602,1428735 |access-date=2022-07-13 |website=Bangor Daily News |publisher=Associated Press |quote=Although he has received less publicity in recent years, his views have become, if anything, more extreme. He suggested in an interview the possibility of bonus payments to black people for undergoing voluntary sterilization.}}</ref><ref>{{Cite web|title=Palo Alto History|url=http://www.paloaltohistory.org/william-shockley.php|access-date=October 7, 2024|website=www.paloaltohistory.org|quote=His views became increasingly controversial, as he asserted that darker races were mentally inferior to whites and that ghetto blacks were “downbreeding” humanity. He became a firm proponent of eugenics: the belief that targeted breeding could lead to improvements in the human race.}}</ref><ref>{{Cite journal |last=Thorp |first=H. Holden |date=2022-11-18 |title=Shockley was a racist and eugenicist |journal=Science |language=en |volume=378 |issue=6621 |pages=683 |doi=10.1126/science.adf8117 |pmid=36395223 |bibcode=2022Sci...378..683T |s2cid=253582584 |issn=0036-8075|doi-access=free }}</ref>
Along with ] and ], Shockley co-invented the ], for which all three were awarded the 1956 ]. Shockley's attempts to commercialize a new transistor design in the 1950s and '60s led to ]'s "]" becoming a hotbed of computer innovation.
{{TOClimit|2}}


==Early life and education==
In his later life, Shockley was a professor at ], and he also became a staunch advocate of ].
Shockley was born to American parents in ] on February 13, 1910, and was raised in his family's hometown of ], California, from the age of three.<ref name="IREProceedings1952" /> His father, William Hillman Shockley, was a ] who speculated in mines for a living and spoke eight languages. His mother, May (née Bradford), grew up in the American West, graduated from ] and became the first female U.S. Deputy mining surveyor.<ref name="Shurkin2006p3" /> Shockley was homeschooled up to the age of eight, due to his parents' dislike of public schools as well as Shockley's habit of violent tantrums.<ref>{{Cite web|title=Palo Alto History|url=http://www.paloaltohistory.org/william-shockley.php|access-date=December 14, 2020|website=www.paloaltohistory.org|quote=In Palo Alto, William's temper improved little at first. But ignoring psychiatric recommendations for more socialization, his parents decided to home school William until age eight. Finally, feeling they were unable to keep him out of a school setting any longer, they sent him to the Homer Avenue School for two years, where his behavior improved dramatically --- he even earned an "A" in comportment in his first year.}}</ref> Shockley learned a little physics at a young age from a neighbor who was a Stanford physics professor.<ref>{{Cite web |last= |first= |date=September 10, 1974 |title=William Shockley |url=https://www.aip.org/history-programs/niels-bohr-library/oral-histories/4889 |access-date=2022-07-17 |website=American Institute of Physics |language=en}}</ref> Shockley spent two years at ], then briefly enrolled in the Los Angeles Coaching School to study physics and later graduated from ] in 1927.<ref name=":1">{{cite web|url =https://www.latimes.com/archives/la-xpm-2001-dec-02-tm-10501-story.html|title =The Twisted Legacy of William Shockley|first =Michael A.|last =Hiltzik|website =Los Angeles Times|date =December 2, 2001}}</ref><ref>{{Cite book|last=Moll|first=John L.|url=http://www.nasonline.org/publications/biographical-memoirs/memoir-pdfs/shockley-w.pdf|title=A Biographical Memoir of William Bradford Shockley|publisher=National Academies Press|year=1995|location=Washington, D.C.}}</ref>


Shockley earned his Bachelor of Science degree from ] in 1932 and a PhD from ] in 1936. The title of his doctoral thesis was ''Electronic Bands in Sodium Chloride'', a topic suggested by his thesis advisor, ].<ref name="Shurkin2006pp38–39" />
==Biography==
===Early years===
Shockley was born in ] to ] parents, and raised in ]. He received his Bachelor of Science degree from the ] in 1932. While still a student, Shockley married Iowan Jean Bailey in August of 1933. In March of 1934 he and Jean had a baby girl, Alison. Shockely was awarded his doctorate from ] in 1936. Notably, the title of his doctoral thesis was ''Calculation of Electron Wave Functions in Sodium Chloride Crystals,'' and was suggested by his thesis advisor, ]. After receiving his doctorate, he soon joined a research group headed by Dr. C.J. Davisson at ] in ]. In 1938 got his first patent, "Electron Discharge Device" on ]s.


==Career==
When ] broke out, Shockley became involved in ] research at the labs in Whippany, New Jersey. In May 1942 he took leave from Bell Labs to become a research director at Columbia University's Anti-Submarine Warfare ] Group. This involved devising methods for countering the tactics of submarines with improved ] techniques, optimizing ] patterns, and so on. This project required frequent trips to the Pentagon and Washington, where Shockley met many high ranking officers and government officials. In 1944 he organized a training program for ] bomber pilots to use new radar bomb sights. In late 1944 he took a three month tour to bases around the world to assess the results. For this project, Secretary of War Robert Patterson awarded Shockley the ] on October 17, 1946.
Shockley was one of the first recruits to ] by ], who became director of research at the company in 1936 and focused on hiring ]s.<ref name=":5" /> Shockley joined a group headed by ] in ].<ref>{{Cite book |last=Cooper |first=David Y. |url=http://dx.doi.org/10.1093/anb/9780198606697.article.1302153 |title=Shockley, William Bradford (13 February 1910–12 August 1989), physicist |date=2000 |publisher=Oxford University Press |series=American National Biography Online|doi=10.1093/anb/9780198606697.article.1302153 }}</ref> Executives at Bell Labs had theorized that ] may offer solid-state alternatives to the ]s used throughout Bell's nationwide telephone system. Shockley conceived a number of designs based on copper-oxide semiconductor materials, and with ] unsuccessfully attempted to create a prototype in 1939.<ref name=":5"> Encyclopedia Britannica</ref>


Shockley published a number of fundamental papers on solid state physics in '']''. In 1938, he received his first patent, "Electron Discharge Device", on ]s.<ref name="Shurkin2006p48" />]When ] broke out, Shockley's prior research was interrupted and he became involved in ] research in ] (]). In May 1942, he took leave from Bell Labs to become a research director at ]'s Anti-Submarine Warfare Operations Group.<ref>''Broken Genius'' p. 65–67</ref> This involved devising methods for countering the tactics of submarines with improved ]ing techniques, optimizing ] patterns, and so on. Shockley traveled frequently to ] and Washington to meet high-ranking officers and government officials.<ref>{{Cite book |last=Dean Barrett |first=David |url=https://www.worldcat.org/oclc/1149147965 |title=140 days to Hiroshima : the story of Japan's last chance to avert Armageddon |date=2020 |isbn=978-1-63576-580-9 |location=New York |oclc=1149147965}}</ref>
===Solid-state transistor===
In 1944, he organized a training program for ] bomber pilots to use new ] bomb sights. In late 1944, he took a three-month tour to bases around the world to assess the results. For this project, Secretary of War ] awarded Shockley the ] on October 17, 1946.<ref name="Shurkin2006p85"/>
Shortly after the end of the war in 1945, Bell Labs formed a Solid State Physics Group, led by Shockley and chemist ]; other personnel including Bardeen and Brattain, physicist Gerald Pearson, chemist Robert Gibney, electronics expert Hilbert Moore and several technicians. Their assignment was to seek a solid-state alternative to fragile glass ] amplifiers. Their first attempts were based on Shockley's ideas about using an external electrical field on a semiconductor to affect its conductivity. These experiments mysteriously failed every time in all sorts of configurations and materials. The group was at a standstill until Bardeen suggested a theory that invoked surface states that prevented the field from penetrating the semiconductor. The group changed its focus to study these surface states and they met almost daily to discuss the work. The rapport of the group was excellent, and ideas were freely exchanged.<ref>Brattain quoted in ''Crystal Fire'' p. 127 </ref> By the winter of 1946 they had enough results that Bardeen submitted a paper on the surface states to ]. Brattain started experiments to study the surface states through observations made while shining a bright light on the semiconductor's surface. This led to several more papers (one of them co-authored with Shockley), which estimated the density of the surface states to be more than enough to account for their failed experiments. The pace of the work picked up significantly when they started to surround point contacts between the semiconductor and the conducting wires with ]s. Moore built a circuit that allowed them to vary the frequency of the input signal easily and suggested that they use glycol borate (gu), a viscous chemical that didn't evaporate. Finally they began to get some evidence of power amplification when Pearson, acting on a suggestion by Shockley, <ref>''Crystal Fire'' p. 132</ref> put a voltage on a droplet of gu placed across a ].


In July 1945, the ] asked Shockley to prepare a report on the question of probable casualties from an invasion of the Japanese mainland. Shockley concluded:
December of 1947 was ]' "Miracle Month," when Bardeen and Brattain -- working without Shockely -- succeeded in creating a ] that achieved amplification. By the next month, ]'s patent attorneys started to work on the patent applications.


{{blockquote|If the study shows that the behavior of nations in all historical cases comparable to Japan's has in fact been invariably consistent with the behavior of the troops in battle, then it means that the Japanese dead and ineffectives at the time of the defeat will exceed the corresponding number for the Germans. In other words, we shall probably have to kill at least 5 to 10 million Japanese. This might cost us between 1.7 and 4 million casualties including 400,000 to 800,000 killed.<ref name="Giangreco1997" />}}
Bell Labs attorneys soon discovered that Shockley's field effect principle had been anticipated and patented in 1930 by ]. Although the patent appeared "breakable" (it could not work) the patent attorneys based one of its four patent applications only on the Bardeen-Brattain point contact design. Three others submitted at the same time covered the electrolyte-based transistors with Bardeen, Gibney and Brattain as the inventors. Shockley's name was not on any of these patent applications. This angered Shockley, who thought his name should also be on the patents because the work was based on his field effect idea. He even made efforts to have the patent written only in his name, and told Bardeen and Brattain of his intentions.


This report influenced the decision of the United States to drop ] on Hiroshima and Nagasaki, which preceded the surrender of Japan.<ref>{{cite journal |first=Robert P. |last=Newman |title=Hiroshima and the Trashing of Henry Stimson |journal=] |volume=71 |issue=1 |date=1998 |page=27 |doi=10.2307/366722|jstor=366722 }}</ref>
At the same time he secretly continued his own work to build a different sort of transistor based on junctions instead of point contacts; he expected this kind of design would be more likely to be viable commercially. Shockley worked furiously on his magnum opus, ''Electrons and Holes in Semiconductors'' which was finally published as a 558 page treatise in 1950. In it, Shockley worked out the critical ideas of drift and diffusion and the differential equations that govern the flow of electrons in solid state crystals. ] is also described. He was dissatisfied with certain explanations for how the point contact transistor worked and conceived of the possibility of minority carrier injection. This led Shockley to ideas for what he called a "sandwich transistor." This resulted in the ], which was announced at a press conference on ], ]. Shockley obtained a patent for this invention on ], ]. Different fabrication methods for this device were developed but the "diffused-base" method became the method of choice for many applications. It soon eclipsed the point contact transistor, and it and its offspring became overwhelmingly dominant in the marketplace for many years. Shockley continued as a group head to lead much of the effort at Bell Labs to improve it and its fabrication for two more years.


Shockley was the first physicist to propose a ] distribution to model the creation process for scientific research papers.<ref>The Artful Universe by John D. Barrow, Clarendon Press, Oxford, 1995, p. 239</ref>
Shockley was a popular speaker/lecturer, an amateur magician and, famously, once magically produced a bouquet of roses at the end of an address before the American Physical society.


===Development of the transistor===
In 1951, he was elected a member of the ] (NAS). He was forty-one years old; this was rather young for such an election. Two years later, he was chosen as the recipient of the prestigious ] for Physics by the NAS.
Shortly after the war ended in 1945, Bell Labs formed a solid-state physics group, led by Shockley and chemist Stanley Morgan, which included ], ], physicist ], chemist ], electronics expert ], and several technicians. Their assignment was to seek a solid-state alternative to fragile glass ] amplifiers. First attempts were based on Shockley's ideas about using an external electrical field on a semiconductor to affect its conductivity. These experiments failed every time in all sorts of configurations and materials. The group was at a standstill until Bardeen suggested a theory that invoked ] that prevented the field from penetrating the semiconductor. The group changed its focus to study these surface states and they met almost daily to discuss the work. The group had excellent rapport and freely exchanged ideas.<ref>Brattain quoted in ''Crystal Fire'' p. 127</ref>


By the winter of 1946 they had enough results that Bardeen submitted a paper on the surface states to '']''. Brattain started experiments to study the surface states through observations made while shining a bright light on the semiconductor's surface. This led to several more papers (one of them co-authored with Shockley), which estimated the density of the surface states to be more than enough to account for their failed experiments. The pace of the work picked up significantly when they started to surround point contacts between the semiconductor and the conducting wires with ]s. Moore built a circuit that allowed them to vary the frequency of the input signal easily. Finally they began to get some evidence of power amplification when Pearson, acting on a suggestion by Shockley, put a voltage on a droplet of glycol borate placed across a ].<ref name="Crystal Fire p. 132">''Crystal Fire'' p.132</ref>
The ensuing publicity generated by the "invention of the transistor" often thrust Shockley to the fore, much to the chagrin of Bardeen and Brattain. Bell Labs management, however, consistently presented all three inventors as a team. Shockley eventually infuriated and alienated Bardeen and Brattain, and he essentially blocked the two from working on the junction transistor. Bardeen began pursuing a theory for superconductivity and left Bell Labs in 1951. Brattain refused to work with Shockley further and was assigned to another group. Neither Bardeen nor Brattain had much to do with the development of the transistor beyond the first year after their invention.<ref>''Crystal Fire'' p. 278</ref>
], 1948]]


Bell Labs' attorneys soon discovered Shockley's field effect principle had been anticipated and devices based on it patented in 1930 by ], who filed his ]-like patent in Canada on October 22, 1925.<ref>{{patent|CA|272437 |"Electric current control mechanism", first filed in Canada on October 22, 1925}}</ref><ref> {{webarchive |url=https://web.archive.org/web/20061002065548/http://chem.ch.huji.ac.il/~eugeniik/history/lilienfeld.htm |date=October 2, 2006 }}</ref> Although the patent appeared "breakable" (it could not work) the patent attorneys based one of its four patent applications only on the Bardeen-Brattain point contact design. Three others (submitted first) covered the electrolyte-based transistors with Bardeen, Gibney and Brattain as the inventors.{{citation needed|date=June 2020}}
Shockley's abrasive management style caused him to be passed over for executive promotion at Bell Labs, which also felt he was a greater asset as a research scientist and theorist. Shockley wanted the power and profit he felt he deserved. He took a leave from Bell Labs in 1953 and moved back to the ] (Caltech) for four months as a visiting professor.

Shockley's name was not on any of these patent applications. This angered Shockley, who thought his name should also be on the patents because the work was based on his field effect idea. He even made efforts to have the patent written only in his name, and told Bardeen and Brattain of his intentions.<ref>{{cite web |url=http://www.ieeeghn.org/index.php/William_Shockley |title=William Shockley |work=IEEE Global History Network |publisher=IEEE |access-date=July 18, 2011}}</ref>

Shockley, angered by not being included on the patent applications, secretly continued his own work to build a different sort of transistor based on junctions instead of point contacts; he expected this kind of design would be more likely to be commercially viable. The point contact transistor, he believed, would prove to be fragile and difficult to manufacture. Shockley was also dissatisfied with certain parts of the explanation for how the point contact transistor worked and conceived of the possibility of ] injection.

On February 13, 1948, another team member, ], built a point contact transistor with bronze contacts on the front and back of a thin wedge of ], proving that ] could diffuse through bulk germanium and not just along the surface as previously thought.<ref name="crystal-fire">{{cite book
| title = Crystal fire: the invention of the transistor and the birth of the information age
| isbn = 978-0-393-31851-7
|author1=Michael Riordan |author1-link=Michael Riordan (physicist) |author2=Lillian Hoddeson |author2-link=Lillian Hoddeson
|name-list-style=amp | year = 1998
| publisher = W. W. Norton & Company
}}</ref>{{rp|153}}<ref name="True Genius">{{cite book
|title=True genius: the life and science of John Bardeen : the only winner of two Nobel prizes in physics
|last1=Hoddeson
|first1=Lillian
|last2=Daitch
|first2=Vicki
|date=2002
|publisher=Joseph Henry Press
|isbn=978-0-309-08408-6
|url=https://archive.org/details/truegeniuslifesc0000hodd
|access-date=December 30, 2014
|url-access=registration
}}
*{{cite magazine |author=Diana Buchwald |date=March–April 2003 |title=John Who? |url=http://www.americanscientist.org/bookshelf/pub/john-who |archive-url=https://web.archive.org/web/20150102044400/http://www.americanscientist.org/bookshelf/pub/john-who |archive-date=2015-01-02 |magazine=American Scientist |volume=91 |number=2}}</ref>{{rp|145}} Shive's invention sparked<ref name="Brittain1984p1695" /> Shockley's invention of the junction transistor.<ref name="crystal-fire"/>{{rp|143}} A few months later he invented an entirely new, considerably more robust, type of transistor with a layer or 'sandwich' structure. This structure went on to be used for the vast majority of all transistors into the 1960s, and evolved into the bipolar junction transistor. Shockley later described the workings of the team as a "mixture of cooperation and competition". He also said that he kept some of his own work secret until his "hand was forced" by Shive's 1948 advance.<ref name=":3">{{cite news
| title = Inventors of the transistor followed diverse paths after 1947 discovery
| url = https://news.google.com/newspapers?id=nqlJAAAAIBAJ&pg=4602,1428735
| publisher = Associated press – Bangor Daily news
| date = December 25, 1987
| access-date = May 6, 2012
| quote = 'mixture of cooperation and competition' and 'Shockley, eager to make his own contribution, said he kept some of his own work secret until "my hand was forced" in early 1948 by an advance reported by John Shive, another Bell Laboratories researcher'
}}</ref> Shockley worked out a rather complete description of what he called the "sandwich" transistor, and a first ] was obtained on April 7, 1949.

Meanwhile, Shockley worked on his ], '']'' which was published as a 558-page treatise in 1950. The tome included Shockley's critical ideas of drift and diffusion and the differential equations that govern the flow of electrons in solid state crystals. ] is also described. This seminal work became the reference text for other scientists working to develop and improve new variants of the transistor and other devices based on semiconductors.<ref>''Broken Genius'', p 121-122</ref>

This resulted in his invention of the bipolar "]", which was announced at a press conference on July 4, 1951.<ref>{{Cite web|url = http://www.computerhistory.org/semiconductor/timeline/1951-First.html|title = 1951 – First grown-junction transistors fabricated|publisher = ]|year = 2007|access-date = July 3, 2013}}</ref>

In 1951, he was elected to the ] (NAS). He was forty-one years old; this was rather young for such an election. Two years later, he was chosen as the recipient of the prestigious ]<ref>{{cite web|url=http://www.sns.ias.edu/~jnb/Vitae/NASaward/nasaward.html|title=Comstock Prize}}</ref> for Physics by the NAS, and was the recipient of many other awards and honors.

The ensuing publicity generated by the "invention of the transistor" often thrust Shockley to the fore, much to the chagrin of Bardeen and Brattain. Bell Labs management, however, consistently presented all three inventors as a team. Though Shockley would correct the record where reporters gave him sole credit for the invention,<ref>{{cite web|url=https://www.pbs.org/transistor/album1/shockley/shockley3.html|title=Bill Shockley, Part 3 of 3|first=ScienCentral|last=ScienCentral|website=www.pbs.org}}</ref> he eventually infuriated and alienated Bardeen and Brattain, and he essentially blocked the two from working on the junction transistor. Bardeen began pursuing a theory for superconductivity and left Bell Labs in 1951. Brattain refused to work with Shockley further and was assigned to another group. Neither Bardeen nor Brattain had much to do with the development of the transistor beyond the first year after its invention.<ref>''Crystal Fire'' p. 278</ref>

Shockley left Bell Labs around 1953 and took a job at Caltech.<ref name=":4" />

Shockley, Bardeen and Brattain received the Nobel Prize in Physics in 1956.<ref name=":7" />


===Shockley Semiconductor=== ===Shockley Semiconductor===
{{Main|Shockley Semiconductor Laboratory}}
Eventually he was given a chance to run his own company, as a division of a Caltech friend's successful electronics firm. In 1955, Shockley joined ], where he was appointed as the Director of Beckman's newly founded ] division in ]. With his prestige and Beckman's capital, Shockley attempted to lure some of his former colleagues from Bell Labs to his new lab, but none of them would join him. Instead, Shockley started scouring universities for the brightest graduates to build a company from scratch, one that would be run "his way".
In 1956, Shockley started ] in ], which was close to his elderly mother in Palo Alto, California.<ref>{{cite news |title=Holding On |url=https://www.nytimes.com/2008/04/06/realestate/keymagazine/406Lede-t.html?pagewanted=all |quote=In 1955, the physicist William Shockley set up a semiconductor laboratory in Mountain View, partly to be near his mother in Palo Alto. ...|newspaper=] |date=April 6, 2008 |access-date=December 7, 2014 }}</ref><ref>{{cite news |title=Two Views of Innovation, Colliding in Washington |url=https://query.nytimes.com/gst/fullpage.html?res=9B07EEDC153BF930A25752C0A96E9C8B63& |quote=The co-inventor of the transistor and the founder of the valley's first chip company, William Shockley, moved to Palo Alto, Calif., because his mother lived there. ...|newspaper=] |date=January 13, 2008 |access-date=December 7, 2014 }}</ref> The company, a division of ], Inc., was the first establishment working on silicon semiconductor devices in what came to be known as ].


Shockley recruited brilliant employees to his company, but alienated them by undermining them relentlessly.<ref name=":10">{{Cite web |last=SFGATE |first=Mike Moffitt |date=2018-08-21 |title=How a racist genius created Silicon Valley by being a terrible boss |url=https://www.sfgate.com/tech/article/Silicon-Valley-Shockley-racist-semiconductor-lab-13164228.php |access-date=2022-07-17 |website=SFGATE |language=en-US}}</ref><ref name=":9">{{Cite news |title=Electronics Pioneer William Shockley's Legacy |language=en |work=NPR.org |url=https://www.npr.org/templates/story/story.php?storyId=5573656? |access-date=2022-07-17}}</ref> "He may have been the worst manager in the history of electronics", according to his biographer Joel Shurkin.<ref name=":9" /><ref name=":10" /> Shockley was autocratic, domineering, erratic, hard-to-please, and increasingly paranoid.<ref>{{Cite web |date=2013 |title=Silicon Valley {{!}} American Experience {{!}} PBS |url=https://www.pbs.org/wgbh/americanexperience/films/silicon/ |access-date=2022-07-10 |website=www.pbs.org |language=en}}</ref><ref name=":8" /> In one well-known incident, he demanded ] tests to find the "culprit" after a company secretary suffered a minor cut.<ref name=":8">''Crystal Fire'' p. 247</ref> In late 1957, eight of Shockley's best researchers, who would come to be known as the "]", resigned after Shockley decided not to continue research into silicon-based semiconductors.<ref name="Goodheart2006" /><ref name=":4" /> They went on to form ], a loss from which Shockley Semiconductor never recovered and which led to its purchase by another company three years later. Over the course of the next 20 years, more than 65 new enterprises would end up having employee connections back to Fairchild.<ref name="NetValley">{{cite web|url=http://www.netvalley.com/silicon_valley/Legal_Bridge_From_El_Dorado_to_Silicon_Valley.html |title=A legal bridge spanning 100 years: from the gold mines of El Dorado to the "golden" startups of Silicon Valley |author=Gregory Gromov}}</ref>
"His way" could generally be summed up as "domineering and increasingly paranoid". In one famous incident, he claimed that a secretary's cut thumb was the result of a malicious act and he demanded ] tests to find the culprit.<ref>''Crystal Fire'' p. 247</ref> It was later demonstrated the cut was due to a broken thumbtack on the office door, and from that point the research staff was increasingly hostile. Meanwhile, his demands to create a new and technically difficult device (now known as the ]), meant that the project was moving very slowly.


A group of about thirty colleagues have met on and off since 1956 to reminisce about their time with Shockley, "the man who brought silicon to Silicon Valley", as the group's organizer said in 2002.<ref>{{cite press release|url=http://www.stanford.edu/dept/news/pr/02/shockley1023.html|title=William Shockley: still controversial, after all these years|publisher=Stanford University|date=October 22, 2002|author=Dawn Levy|access-date=June 14, 2005|archive-url=https://web.archive.org/web/20050404102748/http://www.stanford.edu/dept/news/pr/02/shockley1023.html|archive-date=April 4, 2005|url-status=dead}}</ref>
Shockley separated from his wife Jean in the Spring of 1954, finally divorcing her in the Summer of 1954. Shortly after forming the company, on November 23, 1955, Shockley married Emmy Lanning, a teacher of psychiatric nursing from Upstate, New York. They had a very happy marriage that lasted until his death in 1989.


==Racist and eugenicist views==
Shockley was a co-recipient of the ] in 1956, along with Bardeen and Brattain. In his Nobel lecture, he gave full credit to Brattain and Bardeen as the inventors of the point-contact transistor. The three of them, together with wives and guests, had a rather raucous late-night champagne-fuelled party to celebrate together.
{{See also|History of the race and intelligence controversy}}
After Shockley left his role as director of Shockley Semiconductor, he joined Stanford University, where he was appointed the ] Professor of Engineering and Applied Science in 1963, a position which he held until he retired as a professor emeritus in 1975.<ref>''Crystal Fire'' p. 277</ref>


In the last two decades of his life, Shockley, who had no degree in ], became widely known for his extreme views on ] and ], and his advocacy of ].<ref name="latimesobit" /><ref name=":6" /> As described by his ''Los Angeles Times'' obituary, "He went from being a physicist with impeccable academic credentials to amateur geneticist, becoming a lightning rod whose views sparked campus demonstrations and a cascade of calumny". He thought his work was important to the future of humanity and he also described it as the most important aspect of his career. He argued that a higher rate of reproduction among purportedly less intelligent people was having a ] effect, and argued that a drop in average intelligence would lead to a decline in ]. He also claimed that ] were genetically and intellectually inferior to ].<ref name="latimesobit" />
In late 1957, eight of Shockley's researchers, who called themselves "the ]," resigned after Shockley decided not to continue research into silicon-based semiconductors. Several of the eight met with ] and described the situation, and the eight started ] after being given ] from Fairchild Camera and Instrument Corporation to form a semiconductor division. Among the "Traitorous Eight" were ] and ], who themselves would leave Fairchild to create ]. Other offspring companies of Fairchild Semiconductor include ] and ].


Shockley's biographer Joel Shurkin notes that for much of Shockley's life in the ] United States of the time, he had almost no contact with black people.{{Sfn|Shurkin|2006|p=52}} In a debate with psychiatrist ] and on '']'' with ], Shockley argued, "My research leads me inescapably to the opinion that the major cause of the American Negro's intellectual and social deficits is hereditary and racially genetic in origin and, thus, not remediable to a major degree by practical improvements in the environment".<ref>{{cite web|title=Firing Line with William F. Buckley Jr.: Shockley's Thesis (Episode S0145, Recorded on June 10, 1974)|website = ]| date=January 27, 2017 |url=https://www.youtube.com/watch?v=7JOIqkh2ms8&t=3116| archive-url=https://ghostarchive.org/varchive/youtube/20211117/7JOIqkh2ms8| archive-date=2021-11-17 | url-status=live|access-date=17 September 2017}}{{cbignore}}</ref>
While Shockley was still trying to get his three-state device to work, Fairchild and ] both introduced the first ]s, making Shockley's work essentially superfluous.


Shockley was one of the ] who received money from the ], and at least one donation to him came from its founder, the eugenicist ].<ref name=":2">{{Cite book |last=Saini |first=Angela |url=https://www.worldcat.org/oclc/1091236746 |title=Superior : the return of race science |date=2019 |isbn=978-0-8070-7694-1 |location=Boston |oclc=1091236746}}</ref>{{Sfn|Shurkin|2006|p=221-223}} Shockley proposed that individuals with ]s below 100 should be paid to undergo voluntary ], $1,000 for each of their IQ points under 100.<ref name="latimesobit">{{cite news |last1=Boyer |first1=Edward J. |date=August 14, 1989 |title=Controversial Nobel Laureate Shockley Dies |newspaper=Los Angeles Times |url=https://www.latimes.com/archives/la-xpm-1989-08-14-mn-369-story.html |access-date=May 11, 2015}}</ref> This proposal led to the ] to withdraw its offer of an honorary degree to him.<ref name="latimesobit" /> Anthropologist and far-right activist ] defended Shockley in a self-published book co-authored with Shockley.<ref>Pearson, Roger (1992). ''Shockley on Eugenics and Race'', pg.&nbsp;15–49. Scott-Townsend Publishers. {{ISBN|1-878465-03-1}}</ref> In 1973, ] professor Edgar G. Epps argued that "William Shockley's position lends itself to racist interpretations".<ref name=":12">{{cite journal |url=http://eric.ed.gov/ERICWebPortal/search/simpleSearch.jsp;jsessionid=OMenSuducta6igZF3Xq3pQ__.ericsrv005?newSearch=true&eric_sortField=&searchtype=keyword&pageSize=10&ERICExtSearch_SearchValue_0=EJ070419&eric_displayStartCount=1&_pageLabel=ERICSearchResult&ERICExtSearch_SearchType_0=kw |author=Epps, Edgar G |title=Racism, Science, and the I.Q. |journal=Integrated Education |volume=11 |issue=1 |pages=35–44 |date=February 1973 |doi=10.1080/0020486730110105}}</ref> ] describes Shockley as a ] who failed to produce evidence for his eugenic theories amidst "near-universal acknowledgement that his work was that of a racist crank".<ref name=":0" /> The science writer ] describes Shockley as having been "a notorious racist".<ref name=":2" />
===Later years===
In July of 1961 Shockley, his wife Emmy, and son Dick were involved in a serious automobile accident: Shockley took several months to recover from his injuries. His firm was sold to Clevite, but never made a profit. When Shockley was eased out of the directorship, he joined Stanford University, where he was appointed the Alexander M. Poniatoff Professor of Engineering and Applied Science.


Shockley insisted that he was not a ].<ref name=":12" /><ref>{{Cite news |last=Harris |first=Art |date=1984-09-12 |title=The Shockley Suit |language=en-US |newspaper=Washington Post |url=https://www.washingtonpost.com/archive/lifestyle/1984/09/12/the-shockley-suit/31817b93-4807-4a16-aa3d-edd773ff9e56/ |access-date=2023-03-29 |issn=0190-8286}}</ref> He wrote that his findings do not support ], instead claiming that East Asians and Jews fare better than whites intellectually.<ref name=":12" /> In 1973, Edgar Epps wrote that "I am pleased that Professor Shockley is not an Aryan supremacist, but I would remind him that a theory espousing hereditary superiority of Orientals or Jews is just as racist in nature as the Aryan supremacy doctrine".<ref name=":12" />
Shockley's last patent was granted in 1968, for a rather complex semiconductor device.


Shockley's advocacy of eugenics triggered protests. In one incident, the science society ], fearing violence, canceled a 1968 convocation in ] where Shockley was scheduled to speak.{{Sfn|Shurkin|2006|p=219-220}}
A group of about 30 colleagues have met on and off at Stanford since 1956 to reminisce about their time with Shockley and his central role in sparking the information technology revolution, its organizer saying "Shockley is the man who brought silicon to Silicon Valley."


In Atlanta in 1981, Shockley filed a ] suit against the '']'' after a science writer, ], compared Shockley's advocacy of a voluntary sterilization program to ]. The suit took three years to go to trial. Shockley won the suit but he only received ]<ref>{{cite news |first=Ronald |last=Kessler |title=Absent at the Creation; How one scientist made off with the biggest invention since the light bulb |url=http://www1.hollins.edu/faculty/richter/327/AbsentCreation.htm |url-status=dead |archive-url=https://web.archive.org/web/20150224230527/http://www1.hollins.edu/faculty/richter/327/AbsentCreation.htm |archive-date=February 24, 2015 }}</ref> and he did not receive any ]. Shockley's biographer Joel Shurkin, a science writer on the staff of Stanford University during those years, sums this statement up by saying that it was defamatory, but Shockley's reputation was not worth much by the time the trial reached a verdict.<ref name="Shurkin2006pp259–260" /> Shockley taped his ] conversations with reporters, transcribed them, and sent the transcripts to the reporters by registered mail. At one point, he toyed with the idea of making the reporters take a simple quiz on his work before he would discuss the subject matter of it with them. His habit of saving all of his papers (including laundry lists) provides abundant documentation on his life for researchers.<ref name="Shurkin2006p286" />
Shockley had a stormy relationship with his three children. By the time of his death in 1989 of ], he was almost completely estranged from them, and his children are reported to have learned of his death only through the print media.


Shockley was a candidate for the ] nomination in the ]. He ran on a ] of opposing the "dysgenic threat" that he alleged ] and other groups posed.<ref>{{Cite web |last=Moll |first=John L. |date=1995 |title=William Bradford Shockley 1910—1989 |url=http://www.nasonline.org/publications/biographical-memoirs/memoir-pdfs/shockley-w.pdf |website=National Academy of Sciences}}</ref><ref name=":0">{{Cite web |title=William Shockley |url=https://www.splcenter.org/fighting-hate/extremist-files/individual/william-shockley |website=Southern Poverty Law Center}}</ref><ref>{{Cite news|url=https://www.nytimes.com/1982/02/12/us/shockley-nobel-winner-files-for-senate-race-in-california.html|title = Shockley, Nobel Winner, Files for Senate Race in California|newspaper = The New York Times|date = February 12, 1982}}</ref> He came in eighth place in the primary, receiving 8,308 votes and 0.37% of the vote.<ref>{{cite web |title= CA US Senate – D Primary|url=https://www.ourcampaigns.com/RaceDetail.html?RaceID=382924|website=OurCampaigns |access-date=November 12, 2019}}</ref> According to Shurkin, by this time, "His racism destroyed his credibility. Almost no one wanted to be associated with him, and many of those who were willing did him more harm than good".{{Sfn|Shurkin|2006|p=268}}
===Beliefs about populations and genetics===
<!--Please read Misplaced Pages's article ] before editing this section.-->


===Foundation for Research and Education on Eugenics and Dysgenics===
Late in his life, Shockley became intensely interested in questions of race, breeding and ]. He thought this work was important to the genetic future of the population<!--this is more accurate than "to the future of humanity"-->, and came to describe it as the most important work of his career, even though it severely tarnished his reputation. In the August, 2006 issue of '']'', Susan Kruglinski wrote:
'''Foundation for Research and Education on Eugenics and Dysgenics''' '''(FREED)''' was a ] founded in March 1970 in the United States formed to support the research of Shockley, who was the president of the foundation and ], a member.<ref>{{Cite web |date=1985-03-28 |title=The Gazette from Montreal, Quebec, Canada |url=https://www.newspapers.com/newspage/419333630/ |access-date=2024-02-08 |website=Newspapers.com |language=en-US}}</ref><ref>{{Cite journal |last=Shurkin |first=Joel N. |date=2008 |title=Broken Genius |url=https://link.springer.com/book/10.1007/978-0-230-55229-6 |journal=SpringerLink |language=en |doi=10.1007/978-0-230-55229-6|isbn=978-0-230-55192-3 }}</ref><ref name="Tucker 1994">{{Cite book |last=Tucker |first=William H. |url=https://books.google.com/books?id=OBsHSzmkYHkC |title=The Science and Politics of Racial Research |date=1994 |publisher=University of Illinois Press |isbn=978-0-252-06560-6 |language=en}}</ref> The foundation released newsletter 'FREED' and research papers at ].


The organization was founded according to its mission "solely for scientific and educational purposes related to human population and quality problems".<ref name="Tucker 1994" />
:in the view of many, went off the deep end. His fascination with largely outdated genetics research (epitomized by his famed association with a Nobel laureate sperm bank) transformed his ] worldview into full-blown ]. In the last years of his life he was utterly isolated from his former colleagues, left to harangue strangers on the inadequacy of the ] race.


From 1969 to 1976, the ] allocated about $2.5 million (] in 2023) to support Shockley's endeavors. This funding was distributed through grants to ] for the exploration of "research into the factors which affect genetic potential" and also directly to FREED.<ref name="fighting-hate/extremist">{{Cite web |title=William Shockley |url=https://www.splcenter.org/fighting-hate/extremist-files/individual/william-shockley |access-date=2024-02-08 |website=Southern Poverty Law Center |language=en}}</ref><ref>{{Cite news |last=Lichtenstein |first=Grace |date=11 Dec 1977 |title=Fund Backs Controversial Study of 'Racial Betterment' |url=https://www.nytimes.com/1977/12/11/archives/fund-backs-controversial-study-of-racial-betterment-some-others-who.html |work=The New York Times}}</ref>
PBS reported:


Via FREED, Shockley promoted his concept of a "Voluntary Sterilization Bonus Plan", proposing to compensate ] women for undergoing ] procedures.<ref name="fighting-hate/extremist" />
:" began giving speeches on population problems, an issue that had interested him since his wartime trips to India. In May of 1963, he gave a speech at ] in Minnesota suggesting that the people least competent to survive in the world were the ones reproducing the fastest, while the best of the human population was using birth control and having fewer children. He had slipped into eugenics."


In 1970, Shockley listed former ] ] as a director of FREED.<ref>{{Cite web |date=1970-04-29 |title=The Delta Democrat-Times from Greenville, Mississippi |url=https://www.newspapers.com/newspage/24196312/ |access-date=2024-02-08 |website=Newspapers.com |language=en-US}}</ref>
:"In an interview a year later with ''U.S. News & World Report'' he fell into the trap of discussing race. He pointed out that African Americans as a group scored 15 points lower on ]s, and suggested the cause was hereditary."


==Personal life==
Shockley believed that the higher rate of reproduction among African Americans was having a "]" effect, and expressed an interest in ]. Shockley's published writings on this topic, such as in letters to the editor of the ''Palo Alto Times,'' were largely based on the research of ]. Shockley also proposed that individuals with IQs below 100 be paid to undergo voluntary ]. He was subsequently attacked in the media, for eugenics had become unpopular after its manifestations under the Nazis in WWII.{{cn}}
At age 23 and while still a student, Shockley married Jean Bailey in August 1933. The couple had two sons and a daughter.<ref> PBS</ref> Shockley separated from her in 1953.<ref name=":4" /> He married Emily Lanning, a psychiatric nurse, in 1955; she helped him with some of his theories.<ref name=":4" /><ref>{{Cite book |last=Hoddeson |first=Lillian |url=https://www.worldcat.org/oclc/1162253791 |title=True genius : the life and science of John Bardeen : the only winner of two Nobel Prizes in physics |date=2002 |others=Vicki Daitch |isbn=0-309-16954-2 |location=Washington, District of Columbia |oclc=1162253791}}</ref> Although one of his sons earned a PhD at Stanford University and his daughter graduated from Radcliffe College, Shockley believed his children "represent a very significant regression ... my first wife – their mother – had not as high an academic-achievement standing as I had".<ref name=latimesobit/>


Shockley was an accomplished rock climber, going often to the ] in the ]. His route across an overhang, known as "Shockley's Ceiling", is one of the classic climbing routes in the area.<ref name="Crystal Fire p. 132"/><ref>{{cite web |url=https://www.mountainproject.com/route/105799687/shockleys-ceiling |title=Shockley's Ceiling |website=] |access-date=December 12, 2018}}
Perhaps it was his beliefs about eugenics that led him to donate sperm to the ], a sperm bank founded by ] in hopes of spreading humans' best genes. The bank, called by the media the "Nobel Prize sperm bank," claimed to have three Nobel Prize-winning donors, though Shockley was the only one to come forward publicly.
</ref> ], a web-based ], changed the route's name to "The Ceiling" in 2020 due to Shockley's eugenics controversies.<ref>{{Cite web|title=Rock Climb The Ceiling, The Gunks|url=https://www.mountainproject.com/route/105799687/the-ceiling|access-date=September 16, 2020|website=Mountain Project}}</ref> He was popular as a speaker, lecturer, and amateur magician. He once "magically" produced a bouquet of roses at the end of his address before the ]. He was also known in his early years for elaborate practical jokes.<ref>''Crystal Fire'' p. 45</ref> He had a longtime hobby of raising ].<ref name=":1" />

Shockley ] to the ], a ] founded by ] in hopes of spreading humanity's best ]s. The bank, called by the media the "Nobel Prize sperm bank", claimed to have three Nobel Prize-winning donors, though Shockley was the only one to publicly acknowledge his involvement.<ref>{{cite news | newspaper=The Daily Register | date=September 19, 1982 | page=47 | title='Banker's' assets misdirected | last=Kulman | first=Doris | quote=According to the bank's owner-operator, California millionaire Robert T. Graham, three Nobel Prize-winning scientists are among those who have sperm on deposit. | url=https://www.newspapers.com/clip/120466259/repository-for-germinal-choice-three/}}</ref> However, Shockley's controversial views brought the Repository for Germinal Choice a degree of notoriety and may have discouraged other Nobel Prize winners from donating sperm.<ref>{{cite news |author=Polly Morrice |title=The Genius Factory: Test-Tube Superbabies |url=https://www.nytimes.com/2005/07/03/books/review/03MORRICE.html?ei=5088&en=859598b50aab62e1&ex=1278043200&partner=rssnyt&emc=rss&pagewanted=all# |work=The New York Times |date=July 3, 2005 |access-date=February 12, 2008}}</ref>

According to ], Shockley was cruel towards his children and unhappy in his life. He reportedly tried playing ] as part of an attempted suicide.<ref name=":4">{{Cite web |date=1999 |title=Transistorized! William Shockley |url=https://www.pbs.org/transistor/album1/shockley/shockley2.html |access-date=2022-07-10 |website=www.pbs.org}}</ref>

===Death===
Shockley died of ] in 1989 at the age of 79.<ref name="obit">{{cite news|date=August 14, 1989|title=William B. Shockley, 79, Creator of Transistor and Theory on Race|work=]|url=https://www.nytimes.com/learning/general/onthisday/bday/0213.html|url-status=dead|access-date=July 21, 2007|archive-url=https://web.archive.org/web/20091015051326/https://www.nytimes.com/learning/general/onthisday/bday/0213.html|archive-date=October 15, 2009|quote=He drew further scorn when he proposed financial rewards for the ''genetically disadvantaged'' if they volunteered for ].}}</ref> At the time of his death, he was estranged from most of his friends and family, except his second wife, the former Emmy Lanning (1913–2007). His children reportedly learned of his death by reading his obituary in the newspaper.<ref>{{cite web |url=https://www.pbs.org/transistor/album1/shockley/shockley3.html |access-date=January 1, 2015 |title=William Shockley (Part 3 of 3): Confusion over Credit |website=] |date=1999}}</ref>{{Bcn|date=February 2024}} Shockley is interred at ] in Palo Alto, California.


==Honors== ==Honors==
* National Medal of Merit, for his war work in 1946.<ref name="Shurkin2006p85"/>
* Shockley was named by '']'' as one of the 100 most influential people of the 20th century.
* ] of the National Academy of Sciences in 1953.<ref name=Comstock>{{cite web|title=Comstock Prize in Physics|url=http://www.nasonline.org/site/PageServer?pagename=AWARDS_comstock|publisher=National Academy of Sciences|access-date=February 13, 2011|url-status=dead|archive-url=https://web.archive.org/web/20101229195326/http://www.nasonline.org/site/PageServer?pagename=AWARDS_comstock|archive-date=December 29, 2010}}</ref>
* He received honorary science doctorates from the University of Pennsylvania, Rutgers University in New Jersey and Gustavus Adolphus Colleges in Minnesota.
* ] Solid State Physics Prize of the American Physical Society. * First recipient of the ] Solid State Physics Prize of the American Physical Society in 1953.
* Co-recipient of the ] in 1956, along with ] and ]. In his Nobel lecture, he gave full credit to Brattain and Bardeen as the inventors of the point-contact transistor.
* Holley Medal of the American Society of Mechanical Engineers in 1963.
* ] of the ] in 1963.
* ] in 1963.<ref>Editor, ÖGV. (2015). Wilhelm Exner Medal. Austrian Trade Association. ÖGV. Austria.</ref>
* Honorary science doctorates from the University of Pennsylvania, Rutgers University in New Jersey, and Gustavus Adolphus Colleges in Minnesota.
* ] from the ] (IEEE) in 1980.
* Named by '']'' magazine as one of the 100 most influential people of the 20th century.
* Listed at {{Numero|3}} on the ]'s 2011 ] list of the top 150 innovators and ideas in the 150-year history of ].


==Patents== ==Patents==
Shockley was granted over ninety US patents.<ref>{{Cite web|title=Google Patents assignee:(Shockley William)|url=https://patents.google.com/?assignee=Shockley+William|access-date=December 12, 2020|website=patents.google.com}}</ref> Some notable ones are:
Shockley was granted over ninety US patents.
* Shockley, {{US patent|2502488}} "''Semiconductor amplifier''". April 4, 1950. * {{patent|US|2502488|''Semiconductor Amplifier''.}} April 4, 1950; his first granted patent involving transistors.
* {{patent|US|2569347|''Circuit element utilizing semiconductive material''. }} September 25, 1951; His earliest applied for (June 26, 1948) patent involving transistors.
* {{patent|US|2655609|''Bistable Circuits''.}} October 13, 1953; Used in computers.
* {{patent|US|2787564|''Forming Semiconductive Devices by Ionic Bombardment''.}} April 2, 1957; The diffusion process for implantation of impurities.
* {{patent|US|3031275|''Process for Growing Single Crystals''.}} April 24, 1962; Improvements on process for production of basic materials.
* {{patent|US|3053635|''Method of Growing Silicon Carbide Crystals''.}} September 11, 1962; Exploring other semiconductors.


==Bibliography==
==Books by Shockley==
===Prewar scientific articles by Shockley===
* Shockley, William ''Electrons and holes in semiconductors, with applications to transistor electronics'', Krieger (1956) ISBN 0882753827.
* {{cite journal |last1=Johnson |first1=R. P. |last2=Shockley |first2=W. |title=An Electron Microscope for Filaments: Emission and Adsorption by Tungsten Single Crystals |journal=Physical Review |publisher=American Physical Society (APS) |volume=49 |issue=6 |date=March 15, 1936 |issn=0031-899X |doi=10.1103/physrev.49.436 |pages=436–440 |bibcode=1936PhRv...49..436J}}
* Shockley, William and Pearson, Roger ''Shockley on Eugenics and Race: The Application of Science to the Solution of Human Problems'' Scott-Townsend (1992) ISBN 1878465031.
* {{cite journal | last1=Slater | first1=J. C. | last2=Shockley | first2=W. | title=Optical Absorption by the Alkali Halides | journal=Physical Review | publisher=American Physical Society (APS) | volume=50 | issue=8 | date=October 15, 1936 | issn=0031-899X | doi=10.1103/physrev.50.705 | pages=705–719| bibcode=1936PhRv...50..705S }}
* Shockley, William ''Mechanics'' Merrill (1966).
* {{cite journal | last=Shockley | first=William | title=Electronic Energy Bands in Sodium Chloride | journal=Physical Review | publisher=American Physical Society (APS) | volume=50 | issue=8 | date=October 15, 1936 | issn=0031-899X | doi=10.1103/physrev.50.754 | pages=754–759| bibcode=1936PhRv...50..754S }}
* {{cite journal | last=Shockley | first=W. | title=The Empty Lattice Test of the Cellular Method in Solids | journal=Physical Review | publisher=American Physical Society (APS) | volume=52 | issue=8 | date=October 15, 1937 | issn=0031-899X | doi=10.1103/physrev.52.866 | pages=866–872| bibcode=1937PhRv...52..866S }}
* {{cite journal | last=Shockley | first=William | title=On the Surface States Associated with a Periodic Potential | journal=Physical Review | publisher=American Physical Society (APS) | volume=56 | issue=4 | date=August 15, 1939 | issn=0031-899X | doi=10.1103/physrev.56.317 | pages=317–323| bibcode=1939PhRv...56..317S }}
* {{cite journal | last1=Steigman | first1=J. | last2=Shockley | first2=W. | last3=Nix | first3=F. C. | title=The Self-Diffusion of Copper | journal=Physical Review | publisher=American Physical Society (APS) | volume=56 | issue=1 | date=July 1, 1939 | issn=0031-899X | doi=10.1103/physrev.56.13 | pages=13–21| bibcode=1939PhRv...56...13S }}


==Books about Shockley== ===Postwar articles by Shockley===
* {{cite journal | last=Shockley | first=W. | title=The Theory of p-n Junctions in Semiconductors and p-n Junction Transistors | journal=Bell System Technical Journal | publisher=Institute of Electrical and Electronics Engineers (IEEE) | volume=28 | issue=3 | year=1949 | issn=0005-8580 | doi=10.1002/j.1538-7305.1949.tb03645.x | pages=435–489}}
* Joel N. Shurkin; '''''Broken Genius''': The Rise and Fall of William Shockley, Creator of the Electronic Age''. New York: Palgrave Macmillan. 2006. ISBN 1-4039-8815-3
* {{cite journal | last1=Shockley | first1=W. | last2=Pearson | first2=G. L. | last3=Haynes | first3=J. R. | title=Hole Injection in Germanium-Quantitative Studies and Filamentary Transistors | journal=Bell System Technical Journal | publisher=Institute of Electrical and Electronics Engineers (IEEE) | volume=28 | issue=3 | year=1949 | issn=0005-8580 | doi=10.1002/j.1538-7305.1949.tb03641.x | pages=344–366}}
* {{cite journal | last=Shockley | first=W. | title=Hot Electrons in Germanium and Ohm's Law | journal=Bell System Technical Journal | publisher=Institute of Electrical and Electronics Engineers (IEEE) | volume=30 | issue=4 | year=1951 | issn=0005-8580 | doi=10.1002/j.1538-7305.1951.tb03692.x | pages=990–1034}}
* {{cite journal | last=Shockley | first=W. | title=Negative Resistance Arising from Transit Time in Semiconductor Diodes | journal=Bell System Technical Journal | publisher=Institute of Electrical and Electronics Engineers (IEEE) | volume=33 | issue=4 | year=1954 | issn=0005-8580 | doi=10.1002/j.1538-7305.1954.tb03742.x | pages=799–826}}
* {{cite journal | last1=Sze | first1=S. M. | last2=Shockley | first2=W. | title=Unit-Cube Expression for Space-Charge Resistance | journal=Bell System Technical Journal | publisher=Institute of Electrical and Electronics Engineers (IEEE) | volume=46 | issue=5 | date=May 6, 1967 | issn=0005-8580 | doi=10.1002/j.1538-7305.1967.tb01716.x | pages=837–842}}
* , Shockley 1957
* On ], ] and social issues:
** Shockley 1965, "Is Quality of US Population Declining." U.S. News & World Report, November 22, pp.&nbsp;68–71
** Shockley 1966, (on an early form of ])
** Shockley 1966, "Population Control or Eugenics." In J. D. Roslansky (ed.), ''Genetics and the Future of Man'' (New York: Appleton-Century-Crofts)
** Shockley 1967, "The Entrenched Dogmatism of Inverted Liberals", manuscript by Shockley from which major portions were read in lectures
** Shockley 1968, "Proposed Research to Reduce Racial Aspects of the Environment-Heredity Uncertainty", proposal read by Shockley before the National Academy of Science on April 24, 1968
** Shockley 1968, "Ten Point Position Statement on Human Quality Problems", revised by Shockley from a talk which he presented on "Human Quality Problems and Research Taboos"
** Shockley 1969, "An Analysis Leading to a Recommendation Concerning Inquiry into Eugenic Legislation", press release by Shockley, Stanford University, April 28, 1969
** Shockley 1970, "A 'Try Simplest Cases' Approach to the Heredity-Poverty-Crime Problem." In V. L. Allen (ed.), ''Psychological Factors in Poverty'' (Chicago: Markham)
** Shockley 1979, "Proposed NAS Resolution, drafted October 17, 1970", proposed by Shockley before the National Academy of Sciences
** Shockley 1970,
** Shockley 1971,
** Shockley 1971, "Dysgenics – A Social Problem Evaded by the Illusion of Infinite Plasticity of Human Intelligence?", manuscript planned for reading at the American Psychological Association Symposium entitled: "Social Problems: Illusion, Delusion or Reality."
** "Models, Mathematics, and the Moral Obligation to Diagnose the Origin of Negro IQ Deficits", W. Shockley, (1971) <ref>{{Cite journal|last=Shockley|first=William|date=1971|title=Models, Mathematics, and the Moral Obligation to Diagnose the Origin of Negro IQ Deficits|url=https://www.jstor.org/stable/1169443|journal=Review of Educational Research|volume=41|issue=4|pages=369–377|doi=10.3102/00346543041004369 |jstor=1169443|issn=0034-6543}}</ref>
** , Shockley 1971<ref>{{Cite journal|last=Shockley|first=William|date=1971|title=Negro IQ Deficit: Failure of a "Malicious Coincidence" Model Warrants New Research Proposals|url=https://www.jstor.org/stable/1169529|journal=Review of Educational Research|volume=41|issue=3|pages=227–248|doi=10.2307/1169529|jstor=1169529|issn=0034-6543}}</ref>
** , Shockley 1972a<ref>{{Cite journal|last1=Shockley|first1=Wiliam|last2=Shockley|first2=William|date=1972|title=Dysgenics, Geneticity, Raceology: A Challenge to the Intellectual Responsibility of Educators|url=https://www.jstor.org/stable/20373194|journal=The Phi Delta Kappan|volume=53|issue=5|pages=297–307|jstor=20373194|issn=0031-7217}}</ref>
** , Shockley 1972b<ref>{{Cite journal|last=Shockley|first=William|date=1972|title=A Debate Challenge: Geneticity Is 80% for White Identical Twins' I.Q.'s|url=https://www.jstor.org/stable/20373251|journal=The Phi Delta Kappan|volume=53|issue=7|pages=415–419|jstor=20373251|issn=0031-7217}}</ref>
** Shockley 1972, "Proposed Resolution Regarding the 80% Geneticity Estimate for Caucasian IQ", advance press release concerning a paper presented by Shockley
** Shockley 1973, "Deviations from Hardy-Weinberg Frequencies Caused by Assortative Mating in Hybrid Populations"<ref>{{Cite journal|last=Shockley|first=William|date=1973|title=Deviations from Hardy-Weinberg Frequencies Caused by Assortative Mating in Hybrid Populations|url= |journal=Proceedings of the National Academy of Sciences of the United States of America|volume=70|issue=3|pages=732–736|doi=10.1073/pnas.70.3.732|jstor=62346|pmid=4514986|pmc=433346|bibcode=1973PNAS...70..732S|issn=0027-8424|doi-access=free}}</ref>
** Shockley 1974, "Eugenic, or Anti-Dysgenic, Thinking Exercises", press release by Shockley dated 1974 May 3
** Shockley 1974, "Society Has a Moral Obligation to Diagnose Tragic Racial IQ Deficits", prepared statement by Shockley to be read during his debate against Roy Innis
** Shockley 1978, "Has Intellectual Humanitarianism Gone Berserk?", introductory statement read by Shockley prior to a lecture given by him at UT Dallas
** Shockley 1979, "Anthropological Taboos About Determinations of Racial Mixes", press release by Shockley on October 16, 1979
** Shockley 1980, "Sperm Banks and Dark-Ages Dogmatism", position paper presented by Shockley in a lecture to the Rotary Club of Chico, California, April 16, 1980
** Shockley 1981, "Intelligence in Trouble", article by Shockley published in Leaders magazine, issue dated 1981 June 15


===Books by Shockley===
* Michael Riordan and Lillian Hoddeson; '''''Crystal Fire''': The Invention of the Transistor and the Birth of the Information Age''. New York: Norton. 1997. ISBN 0-393-31851-6 pbk.
* Shockley, William – ''Electrons and holes in semiconductors, with applications to transistor electronics'', Krieger (1956) {{ISBN|0-88275-382-7}}
* Shockley, William and Gong, Walter A – ''Mechanics'' Charles E. Merrill, Inc. (1966)
* Shockley, William and Pearson, Roger – , Scott-Townsend (1992) {{ISBN|1-878465-03-1}}

===Interviews===
*
* ''Playboy'' 1980,

== Notes ==
=== Citations ===
<!-- This article uses the citation templates described in ]. Thank you to RexxS for the detailed tips. -->
{{reflist|30em|refs=
<ref name="NYTimesobit">{{Harvnb |Saxon|1989|loc=}}</ref>
<ref name="PhysicsTodayobit">{{Harvnb |Sparks|Hogan|Linville|1991|pages=130–132 }}</ref>
<ref name="IREProceedings1952">{{cite journal|doi=10.1109/JRPROC.1952.274003|journal=Proceedings of the IRE|volume=40|issue=11|pages=1605–1612|year=1952 |title=Contributors to Proceedings of the I.R.E. }}</ref>
<ref name="Shurkin2006p3">{{Harvnb |Shurkin|2006|page=5}}</ref>
<ref name="Shurkin2006pp38–39">{{Harvnb |Shurkin|2006|pages=38–39}}</ref>
<ref name="Shurkin2006p48">{{Harvnb |Shurkin|2006|page=48}}</ref>
<ref name="Shurkin2006p85">{{Harvnb |Shurkin|2006|page=85}}</ref>
<ref name="Giangreco1997">{{Harvnb |Giangreco|1997|page=568}}</ref>
<ref name="Brittain1984p1695">{{Harvnb |Brittain|1984|page=1695}} "an observation that William Shockley interpreted as confirmation of his concept of that junction transistor"</ref>
<ref name="Goodheart2006">{{Harvnb |Goodheart|2006}} "Fed up with their boss, eight lab workers walked off the job on this day in Mountain View, Calif. Their employer, William Shockley, had decided not to continue research into silicon-based semiconductors; frustrated, they decided to undertake the work on their own. The researchers — who would become known as 'the traitorous eight' — went on to invent the microprocessor (and to found Intel, among other companies).</ref>
<ref name="Shurkin2006pp259–260">{{Harvnb |Shurkin|2006|pages=259–260 "Essentially, the jury agreed that Witherspoon's column met the standards of defamation, but that by then, Shockley's reputation wasn't worth very much."}}</ref>
<ref name="Shurkin2006p286">{{Harvnb |Shurkin|2006|page=286}}</ref>
}}

=== Other notes ===
* <!--<ref name="ParkLubinskiBenbow2010">-->{{Harvnb |Park|Lubinski|Benbow|2010|loc=""}}<!--</ref>-->
* <!--<ref name="Leslie2000">-->{{Harvnb |Leslie|2000|loc=""}}<!--</ref>-->
* <!--<ref name="Shurkin2006p13">-->{{Harvnb |Shurkin|2006|page= (See also "" Kaufman, S. B. 2009)}}<!--</ref>-->
* <!--<ref name="Simonton1999p4">-->{{Harvnb |Simonton|1999|page= "When Terman first used the IQ test to select a sample of child geniuses, he unknowingly excluded a special child whose IQ did not make the grade. Yet a few decades later that talent received the Nobel Prize in physics: William Shockley, the cocreator of the transistor. Ironically, not one of the more than 1,500 children who qualified according to his IQ criterion received so high an honor as adults."}}<!--</ref>-->
* <!--<ref name="Eysenck1998pp127–128">-->{{Harvnb |Eysenck|1998|pages=127–128 "Terman, who originated those 'Genetic Studies of Genius', as he called them, selected&nbsp;... children on the basis of their high IQs; the mean was 151 for both sexes. Seventy–seven who were tested with the newly translated and standardized Binet test had IQs of 170 or higher–well at or above the level of Cox's geniuses. What happened to these potential geniuses–did they revolutionize society?&nbsp;... The answer in brief is that they did very well in terms of achievement, but none reached the Nobel Prize level, let alone that of genius.&nbsp;... It seems clear that these data powerfully confirm the suspicion that intelligence is not a sufficient trait for truly creative achievement of the highest grade."}}<!--</ref>-->


==References== ==References==
<!-- This article uses the citation templates described in ]. Thank you to RexxS for the detailed tips. -->
<references/>
* {{cite journal |last1=Brittain |first1=J.E. |title=Becker and Shive on the transistor |journal=Proceedings of the IEEE |volume=72 |issue=12 |year=1984 |issn=0018-9219 |doi=10.1109/PROC.1984.13075 |page=1695 |s2cid=1616808 |quote=an observation that William Shockley interpreted as confirmation of his concept of that junction transistor }}
* {{cite book |last=Eysenck |first=Hans |title=Intelligence: A New Look |location=New Brunswick (NJ) |publisher=] |isbn=978-0-7658-0707-6 |date=1998 }}
* {{cite journal|last1=Giangreco|first1=D. M.|s2cid=159870872|title=Casualty Projections for the U.S. Invasions of Japan, 1945-1946: Planning and Policy Implications|journal=] |volume=61 |issue=3 |year=1997 |pages=521–581 |issn=0899-3718 |doi=10.2307/2954035 |jstor=2954035}}
* {{cite news |last=Goodheart |first=Adam |title=10 Days That Changed History |date=July 2, 2006 |newspaper=The New York Times |url=https://www.nytimes.com/2006/07/02/weekinreview/02goodheart.html |access-date=January 2, 2015 }}
* {{cite journal |title=The Vexing Legacy of Lewis Terman |last=Leslie |first=Mitchell |date=July–August 2000 |journal=Stanford Magazine |url=http://alumni.stanford.edu/get/page/magazine/article/?article_id=40678 |access-date=June 5, 2013 |archive-date=August 26, 2021 |archive-url=https://web.archive.org/web/20210826224009/https://alumni.stanford.edu/get/page/magazine/article/?article_id=40678 |url-status=dead }}
* {{cite journal |title=Recognizing Spatial Intelligence |last1=Park |first1=Gregory |last2=Lubinski |first2=David |last3=Benbow |first3=Camilla P. |date=November 2, 2010 |journal=Scientific American |url=http://www.scientificamerican.com/article.cfm?id=recognizing-spatial-intel |access-date=June 5, 2013 }}
* {{cite book |title=Broken Genius: The Rise and Fall of William Shockley, Creator of the Electronic Age |last=Shurkin |first=Joel |date=2006 |publisher=Macmillan |location=London |isbn=978-1-4039-8815-7}}
* {{cite magazine |author=Brian Clegg |title=Review - Broken Genius - Joel Shurkin |magazine=Popular Science |url=http://www.popularscience.co.uk/reviews/rev291.htm |date=June 2, 2013 |access-date=November 13, 2010 |archive-date=March 3, 2016 |archive-url=https://web.archive.org/web/20160303173745/http://www.popularscience.co.uk/reviews/rev291.htm }}
* {{cite book |last=Simonton |first=Dean Keith |title=Origins of genius: Darwinian perspectives on creativity |date=1999 |publisher=Oxford University Press |location=Oxford |isbn=978-0-19-512879-6 |jstor=3080746|url=https://archive.org/details/originsofgeniusd00simo }}
* {{cite book |last1=Riordan |first1=Michael |last2=Hoddeson |first2=Lillian |title=Crystal Fire: The Invention of the Transistor and the Birth of the Information Age |location=New York |publisher=Norton |date=1997 |isbn=978-0-393-04124-8 |series=Sloan Technology Series |url=https://archive.org/details/crystalfirebirth00rior}}
**{{cite journal |author=Arthur P. Molella |title=Crystal Fire: The Birth of the Information Age (review) |journal=Technology and Culture |volume=41 |issue=3 |pages=623–625 |date=July 2000 |doi=10.1353/tech.2000.0121|doi-access=free }}
* {{cite news |last=Saxon |first=Wolfgang |title=William B. Shockley, 79, Creator of Transistor and Theory on Race |url=https://archive.nytimes.com/www.nytimes.com/learning/general/onthisday/bday/0213.html |access-date=January 2, 2015 |quote=He drew further scorn when he proposed financial rewards for the ''genetically disadvantaged'' if they volunteered for sterilization. |newspaper=] |date=August 14, 1989 }}
* {{cite periodical |title=Contributors to Proceedings of the I.R.E. |date=November 1952 |page=1611 |url=https://ieeexplore.ieee.org/document/4050875 |archive-url=https://web.archive.org/web/20121126041440/http://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=04050875 |archive-date=2012-11-26}}
* {{cite journal |last1=Sparks |first1=Morgan |last2=Hogan |first2=Lester |last3=Linville |first3=John |title= William Shockley |author-link1=Morgan Sparks |author-link2=Lester Hogan |journal=Physics Today |volume=44 |issue=6 |year=1991 |pages=130–132 |issn=0031-9228 |doi=10.1063/1.2810155 |bibcode = 1991PhT....44f.130S }}
* {{cite book |last=Tucker |first=William H. |title=The funding of scientific racism: Wickliffe Draper and the Pioneer Fund |author-link=William H. Tucker (psychologist) |publisher=] |date=2007 |isbn=978-0-252-07463-9 |orig-date=first published 2002}}
**{{cite journal |author=Andrew S. Winston |title=The Funding of Scientific Racism: Wickliffe Draper and the Pioneer Fund (review) |journal=Journal of the History of Medicine and Allied Sciences |volume=58 |issue=3 |pages=391–392 |date=July 2003 |doi=10.1093/jhmas/jrg016 |url=http://muse.jhu.edu/journals/journal_of_the_history_of_medicine_and_allied_sciences/summary/v058/58.3winston.html}}


== External links == ==External links==
{{commons category|William Shockley}}
{{wikiquote}} {{wikiquote}}
* *
* {{Nobelprize}} including his Nobel Lecture, December 11, 1956 ''Transistor Technology Evokes New Physics''
*
* *
* * Gordon Moore. ''Time Magazine''
* *
* - interview conducted by ] in ]
*
* *
* *
*
*
*
*
* (SC0222) at Department of Special Collections and University Archives, Stanford University Libraries
*
* has been established, using the company name, to honor Shockley and those who first processed silicon in Silicon Valley.

{{Nobel Prize in Physics}}


{{Nobel Prize in Physics Laureates 1951-1975}}
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{{1956 Nobel Prize winners}}
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{{IEEE Medal of Honor 1976-2000}}
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{{Time Persons of the Year 1951–1975}}
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{{Beckman Coulter}}
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{{Time 100: The Most Important People of the Century}}
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Latest revision as of 15:24, 3 January 2025

American physicist, inventor, and eugenicist (1910–1989) For other uses, see William Shockley (disambiguation).

William Shockley
Shockley in 1975
BornWilliam Bradford Shockley Jr.
(1910-02-13)February 13, 1910
London, England
DiedAugust 12, 1989(1989-08-12) (aged 79)
Stanford, California, U.S.
Alma mater
Known for
Awards
Scientific career
Institutions
Thesis Electronic Bands in Sodium Chloride (1936)
Doctoral advisorJohn C. Slater

William Bradford Shockley Jr. (February 13, 1910 – August 12, 1989) was an American inventor, physicist, and eugenicist. He was the manager of a research group at Bell Labs that included John Bardeen and Walter Brattain. The three scientists were jointly awarded the 1956 Nobel Prize in Physics for "their researches on semiconductors and their discovery of the transistor effect".

Partly as a result of Shockley's attempts to commercialize a new transistor design in the 1950s and 1960s, California's Silicon Valley became a hotbed of electronics innovation. He recruited brilliant employees, but quickly alienated them with his autocratic and erratic management; they left and founded major companies in the industry.

In his later life, while a professor of electrical engineering at Stanford University and afterward, Shockley became known as a racist and eugenicist.

Early life and education

Shockley was born to American parents in London on February 13, 1910, and was raised in his family's hometown of Palo Alto, California, from the age of three. His father, William Hillman Shockley, was a mining engineer who speculated in mines for a living and spoke eight languages. His mother, May (née Bradford), grew up in the American West, graduated from Stanford University and became the first female U.S. Deputy mining surveyor. Shockley was homeschooled up to the age of eight, due to his parents' dislike of public schools as well as Shockley's habit of violent tantrums. Shockley learned a little physics at a young age from a neighbor who was a Stanford physics professor. Shockley spent two years at Palo Alto Military Academy, then briefly enrolled in the Los Angeles Coaching School to study physics and later graduated from Hollywood High School in 1927.

Shockley earned his Bachelor of Science degree from Caltech in 1932 and a PhD from MIT in 1936. The title of his doctoral thesis was Electronic Bands in Sodium Chloride, a topic suggested by his thesis advisor, John C. Slater.

Career

Shockley was one of the first recruits to Bell Labs by Mervin Kelly, who became director of research at the company in 1936 and focused on hiring solid-state physicists. Shockley joined a group headed by Clinton Davisson in Murray Hill, New Jersey. Executives at Bell Labs had theorized that semiconductors may offer solid-state alternatives to the vacuum tubes used throughout Bell's nationwide telephone system. Shockley conceived a number of designs based on copper-oxide semiconductor materials, and with Walter Brattain unsuccessfully attempted to create a prototype in 1939.

Shockley published a number of fundamental papers on solid state physics in Physical Review. In 1938, he received his first patent, "Electron Discharge Device", on electron multipliers.

Shockley (left) during his years in military research

When World War II broke out, Shockley's prior research was interrupted and he became involved in radar research in Manhattan (New York City). In May 1942, he took leave from Bell Labs to become a research director at Columbia University's Anti-Submarine Warfare Operations Group. This involved devising methods for countering the tactics of submarines with improved convoying techniques, optimizing depth charge patterns, and so on. Shockley traveled frequently to the Pentagon and Washington to meet high-ranking officers and government officials.

In 1944, he organized a training program for B-29 bomber pilots to use new radar bomb sights. In late 1944, he took a three-month tour to bases around the world to assess the results. For this project, Secretary of War Robert Patterson awarded Shockley the Medal for Merit on October 17, 1946.

In July 1945, the War Department asked Shockley to prepare a report on the question of probable casualties from an invasion of the Japanese mainland. Shockley concluded:

If the study shows that the behavior of nations in all historical cases comparable to Japan's has in fact been invariably consistent with the behavior of the troops in battle, then it means that the Japanese dead and ineffectives at the time of the defeat will exceed the corresponding number for the Germans. In other words, we shall probably have to kill at least 5 to 10 million Japanese. This might cost us between 1.7 and 4 million casualties including 400,000 to 800,000 killed.

This report influenced the decision of the United States to drop atomic bombs on Hiroshima and Nagasaki, which preceded the surrender of Japan.

Shockley was the first physicist to propose a log-normal distribution to model the creation process for scientific research papers.

Development of the transistor

Shortly after the war ended in 1945, Bell Labs formed a solid-state physics group, led by Shockley and chemist Stanley Morgan, which included John Bardeen, Walter Brattain, physicist Gerald Pearson, chemist Robert Gibney, electronics expert Hilbert Moore, and several technicians. Their assignment was to seek a solid-state alternative to fragile glass vacuum tube amplifiers. First attempts were based on Shockley's ideas about using an external electrical field on a semiconductor to affect its conductivity. These experiments failed every time in all sorts of configurations and materials. The group was at a standstill until Bardeen suggested a theory that invoked surface states that prevented the field from penetrating the semiconductor. The group changed its focus to study these surface states and they met almost daily to discuss the work. The group had excellent rapport and freely exchanged ideas.

By the winter of 1946 they had enough results that Bardeen submitted a paper on the surface states to Physical Review. Brattain started experiments to study the surface states through observations made while shining a bright light on the semiconductor's surface. This led to several more papers (one of them co-authored with Shockley), which estimated the density of the surface states to be more than enough to account for their failed experiments. The pace of the work picked up significantly when they started to surround point contacts between the semiconductor and the conducting wires with electrolytes. Moore built a circuit that allowed them to vary the frequency of the input signal easily. Finally they began to get some evidence of power amplification when Pearson, acting on a suggestion by Shockley, put a voltage on a droplet of glycol borate placed across a p–n junction.

John Bardeen (left), William Shockley and Walter Brattain (right) at Bell Labs, 1948

Bell Labs' attorneys soon discovered Shockley's field effect principle had been anticipated and devices based on it patented in 1930 by Julius Lilienfeld, who filed his MESFET-like patent in Canada on October 22, 1925. Although the patent appeared "breakable" (it could not work) the patent attorneys based one of its four patent applications only on the Bardeen-Brattain point contact design. Three others (submitted first) covered the electrolyte-based transistors with Bardeen, Gibney and Brattain as the inventors.

Shockley's name was not on any of these patent applications. This angered Shockley, who thought his name should also be on the patents because the work was based on his field effect idea. He even made efforts to have the patent written only in his name, and told Bardeen and Brattain of his intentions.

Shockley, angered by not being included on the patent applications, secretly continued his own work to build a different sort of transistor based on junctions instead of point contacts; he expected this kind of design would be more likely to be commercially viable. The point contact transistor, he believed, would prove to be fragile and difficult to manufacture. Shockley was also dissatisfied with certain parts of the explanation for how the point contact transistor worked and conceived of the possibility of minority carrier injection.

On February 13, 1948, another team member, John N. Shive, built a point contact transistor with bronze contacts on the front and back of a thin wedge of germanium, proving that holes could diffuse through bulk germanium and not just along the surface as previously thought. Shive's invention sparked Shockley's invention of the junction transistor. A few months later he invented an entirely new, considerably more robust, type of transistor with a layer or 'sandwich' structure. This structure went on to be used for the vast majority of all transistors into the 1960s, and evolved into the bipolar junction transistor. Shockley later described the workings of the team as a "mixture of cooperation and competition". He also said that he kept some of his own work secret until his "hand was forced" by Shive's 1948 advance. Shockley worked out a rather complete description of what he called the "sandwich" transistor, and a first proof of principle was obtained on April 7, 1949.

Meanwhile, Shockley worked on his magnum opus, Electrons and Holes in Semiconductors which was published as a 558-page treatise in 1950. The tome included Shockley's critical ideas of drift and diffusion and the differential equations that govern the flow of electrons in solid state crystals. Shockley's diode equation is also described. This seminal work became the reference text for other scientists working to develop and improve new variants of the transistor and other devices based on semiconductors.

This resulted in his invention of the bipolar "junction transistor", which was announced at a press conference on July 4, 1951.

In 1951, he was elected to the National Academy of Sciences (NAS). He was forty-one years old; this was rather young for such an election. Two years later, he was chosen as the recipient of the prestigious Comstock Prize for Physics by the NAS, and was the recipient of many other awards and honors.

The ensuing publicity generated by the "invention of the transistor" often thrust Shockley to the fore, much to the chagrin of Bardeen and Brattain. Bell Labs management, however, consistently presented all three inventors as a team. Though Shockley would correct the record where reporters gave him sole credit for the invention, he eventually infuriated and alienated Bardeen and Brattain, and he essentially blocked the two from working on the junction transistor. Bardeen began pursuing a theory for superconductivity and left Bell Labs in 1951. Brattain refused to work with Shockley further and was assigned to another group. Neither Bardeen nor Brattain had much to do with the development of the transistor beyond the first year after its invention.

Shockley left Bell Labs around 1953 and took a job at Caltech.

Shockley, Bardeen and Brattain received the Nobel Prize in Physics in 1956.

Shockley Semiconductor

Main article: Shockley Semiconductor Laboratory

In 1956, Shockley started Shockley Semiconductor Laboratory in Mountain View, California, which was close to his elderly mother in Palo Alto, California. The company, a division of Beckman Instruments, Inc., was the first establishment working on silicon semiconductor devices in what came to be known as Silicon Valley.

Shockley recruited brilliant employees to his company, but alienated them by undermining them relentlessly. "He may have been the worst manager in the history of electronics", according to his biographer Joel Shurkin. Shockley was autocratic, domineering, erratic, hard-to-please, and increasingly paranoid. In one well-known incident, he demanded lie detector tests to find the "culprit" after a company secretary suffered a minor cut. In late 1957, eight of Shockley's best researchers, who would come to be known as the "traitorous eight", resigned after Shockley decided not to continue research into silicon-based semiconductors. They went on to form Fairchild Semiconductor, a loss from which Shockley Semiconductor never recovered and which led to its purchase by another company three years later. Over the course of the next 20 years, more than 65 new enterprises would end up having employee connections back to Fairchild.

A group of about thirty colleagues have met on and off since 1956 to reminisce about their time with Shockley, "the man who brought silicon to Silicon Valley", as the group's organizer said in 2002.

Racist and eugenicist views

See also: History of the race and intelligence controversy

After Shockley left his role as director of Shockley Semiconductor, he joined Stanford University, where he was appointed the Alexander M. Poniatoff Professor of Engineering and Applied Science in 1963, a position which he held until he retired as a professor emeritus in 1975.

In the last two decades of his life, Shockley, who had no degree in genetics, became widely known for his extreme views on race and human intelligence, and his advocacy of eugenics. As described by his Los Angeles Times obituary, "He went from being a physicist with impeccable academic credentials to amateur geneticist, becoming a lightning rod whose views sparked campus demonstrations and a cascade of calumny". He thought his work was important to the future of humanity and he also described it as the most important aspect of his career. He argued that a higher rate of reproduction among purportedly less intelligent people was having a dysgenic effect, and argued that a drop in average intelligence would lead to a decline in civilization. He also claimed that black people were genetically and intellectually inferior to white people.

Shockley's biographer Joel Shurkin notes that for much of Shockley's life in the racially segregated United States of the time, he had almost no contact with black people. In a debate with psychiatrist Frances Cress Welsing and on Firing Line with William F. Buckley Jr., Shockley argued, "My research leads me inescapably to the opinion that the major cause of the American Negro's intellectual and social deficits is hereditary and racially genetic in origin and, thus, not remediable to a major degree by practical improvements in the environment".

Shockley was one of the race theorists who received money from the Pioneer Fund, and at least one donation to him came from its founder, the eugenicist Wickliffe Draper. Shockley proposed that individuals with IQs below 100 should be paid to undergo voluntary sterilization, $1,000 for each of their IQ points under 100. This proposal led to the University of Leeds to withdraw its offer of an honorary degree to him. Anthropologist and far-right activist Roger Pearson defended Shockley in a self-published book co-authored with Shockley. In 1973, University of Wisconsin–Milwaukee professor Edgar G. Epps argued that "William Shockley's position lends itself to racist interpretations". The Southern Poverty Law Center describes Shockley as a white nationalist who failed to produce evidence for his eugenic theories amidst "near-universal acknowledgement that his work was that of a racist crank". The science writer Angela Saini describes Shockley as having been "a notorious racist".

Shockley insisted that he was not a racist. He wrote that his findings do not support white supremacy, instead claiming that East Asians and Jews fare better than whites intellectually. In 1973, Edgar Epps wrote that "I am pleased that Professor Shockley is not an Aryan supremacist, but I would remind him that a theory espousing hereditary superiority of Orientals or Jews is just as racist in nature as the Aryan supremacy doctrine".

Shockley's advocacy of eugenics triggered protests. In one incident, the science society Sigma Xi, fearing violence, canceled a 1968 convocation in Brooklyn where Shockley was scheduled to speak.

In Atlanta in 1981, Shockley filed a libel suit against the Atlanta Constitution after a science writer, Roger Witherspoon, compared Shockley's advocacy of a voluntary sterilization program to Nazi human experimentation. The suit took three years to go to trial. Shockley won the suit but he only received one dollar in damages and he did not receive any punitive damages. Shockley's biographer Joel Shurkin, a science writer on the staff of Stanford University during those years, sums this statement up by saying that it was defamatory, but Shockley's reputation was not worth much by the time the trial reached a verdict. Shockley taped his telephone conversations with reporters, transcribed them, and sent the transcripts to the reporters by registered mail. At one point, he toyed with the idea of making the reporters take a simple quiz on his work before he would discuss the subject matter of it with them. His habit of saving all of his papers (including laundry lists) provides abundant documentation on his life for researchers.

Shockley was a candidate for the Republican nomination in the 1982 United States Senate election in California. He ran on a single-issue platform of opposing the "dysgenic threat" that he alleged African-Americans and other groups posed. He came in eighth place in the primary, receiving 8,308 votes and 0.37% of the vote. According to Shurkin, by this time, "His racism destroyed his credibility. Almost no one wanted to be associated with him, and many of those who were willing did him more harm than good".

Foundation for Research and Education on Eugenics and Dysgenics

Foundation for Research and Education on Eugenics and Dysgenics (FREED) was a non-profit organization founded in March 1970 in the United States formed to support the research of Shockley, who was the president of the foundation and R. Travis Osborne, a member. The foundation released newsletter 'FREED' and research papers at Stanford University.

The organization was founded according to its mission "solely for scientific and educational purposes related to human population and quality problems".

From 1969 to 1976, the Pioneer Fund allocated about $2.5 million (adjusted-for-inflation in 2023) to support Shockley's endeavors. This funding was distributed through grants to Stanford University for the exploration of "research into the factors which affect genetic potential" and also directly to FREED.

Via FREED, Shockley promoted his concept of a "Voluntary Sterilization Bonus Plan", proposing to compensate economically disadvantaged women for undergoing sterilization procedures.

In 1970, Shockley listed former senator of Alaska Ernest Gruening as a director of FREED.

Personal life

At age 23 and while still a student, Shockley married Jean Bailey in August 1933. The couple had two sons and a daughter. Shockley separated from her in 1953. He married Emily Lanning, a psychiatric nurse, in 1955; she helped him with some of his theories. Although one of his sons earned a PhD at Stanford University and his daughter graduated from Radcliffe College, Shockley believed his children "represent a very significant regression ... my first wife – their mother – had not as high an academic-achievement standing as I had".

Shockley was an accomplished rock climber, going often to the Shawangunks in the Hudson River Valley. His route across an overhang, known as "Shockley's Ceiling", is one of the classic climbing routes in the area. Mountain Project, a web-based climbing guidebook, changed the route's name to "The Ceiling" in 2020 due to Shockley's eugenics controversies. He was popular as a speaker, lecturer, and amateur magician. He once "magically" produced a bouquet of roses at the end of his address before the American Physical Society. He was also known in his early years for elaborate practical jokes. He had a longtime hobby of raising ant colonies.

Shockley donated sperm to the Repository for Germinal Choice, a sperm bank founded by Robert Klark Graham in hopes of spreading humanity's best genes. The bank, called by the media the "Nobel Prize sperm bank", claimed to have three Nobel Prize-winning donors, though Shockley was the only one to publicly acknowledge his involvement. However, Shockley's controversial views brought the Repository for Germinal Choice a degree of notoriety and may have discouraged other Nobel Prize winners from donating sperm.

According to PBS, Shockley was cruel towards his children and unhappy in his life. He reportedly tried playing Russian roulette as part of an attempted suicide.

Death

Shockley died of prostate cancer in 1989 at the age of 79. At the time of his death, he was estranged from most of his friends and family, except his second wife, the former Emmy Lanning (1913–2007). His children reportedly learned of his death by reading his obituary in the newspaper. Shockley is interred at Alta Mesa Memorial Park in Palo Alto, California.

Honors

Patents

Shockley was granted over ninety US patents. Some notable ones are:

  • US 2502488  Semiconductor Amplifier. April 4, 1950; his first granted patent involving transistors.
  • US 2569347  Circuit element utilizing semiconductive material. September 25, 1951; His earliest applied for (June 26, 1948) patent involving transistors.
  • US 2655609  Bistable Circuits. October 13, 1953; Used in computers.
  • US 2787564  Forming Semiconductive Devices by Ionic Bombardment. April 2, 1957; The diffusion process for implantation of impurities.
  • US 3031275  Process for Growing Single Crystals. April 24, 1962; Improvements on process for production of basic materials.
  • US 3053635  Method of Growing Silicon Carbide Crystals. September 11, 1962; Exploring other semiconductors.

Bibliography

Prewar scientific articles by Shockley

Postwar articles by Shockley

Books by Shockley

Interviews

Notes

Citations

  1. ^ Borrell, Jerry (2001). "They would be gods". Upside. 13 (10): 53 – via ABI/INFORM Global.
  2. ^ SFGATE, Mike Moffitt (August 21, 2018). "How a racist genius created Silicon Valley by being a terrible boss". SFGATE. Retrieved July 17, 2022.
  3. ^ Boyer, Edward J. (August 14, 1989). "Controversial Nobel Laureate Shockley Dies". Los Angeles Times. Retrieved May 11, 2015.
  4. Saxon 1989
  5. Sparks, Hogan & Linville 1991, pp. 130–132
  6. ^ "Inventors of the transistor followed diverse paths after 1947 discovery". Bangor Daily News. Associated Press. December 26, 1987. Retrieved July 13, 2022. Although he has received less publicity in recent years, his views have become, if anything, more extreme. He suggested in an interview the possibility of bonus payments to black people for undergoing voluntary sterilization.
  7. "Palo Alto History". www.paloaltohistory.org. Retrieved October 7, 2024. His views became increasingly controversial, as he asserted that darker races were mentally inferior to whites and that ghetto blacks were "downbreeding" humanity. He became a firm proponent of eugenics: the belief that targeted breeding could lead to improvements in the human race.
  8. Thorp, H. Holden (November 18, 2022). "Shockley was a racist and eugenicist". Science. 378 (6621): 683. Bibcode:2022Sci...378..683T. doi:10.1126/science.adf8117. ISSN 0036-8075. PMID 36395223. S2CID 253582584.
  9. "Contributors to Proceedings of the I.R.E.". Proceedings of the IRE. 40 (11): 1605–1612. 1952. doi:10.1109/JRPROC.1952.274003.
  10. Shurkin 2006, p. 5
  11. "Palo Alto History". www.paloaltohistory.org. Retrieved December 14, 2020. In Palo Alto, William's temper improved little at first. But ignoring psychiatric recommendations for more socialization, his parents decided to home school William until age eight. Finally, feeling they were unable to keep him out of a school setting any longer, they sent him to the Homer Avenue School for two years, where his behavior improved dramatically --- he even earned an "A" in comportment in his first year.
  12. "William Shockley". American Institute of Physics. September 10, 1974. Retrieved July 17, 2022.
  13. ^ Hiltzik, Michael A. (December 2, 2001). "The Twisted Legacy of William Shockley". Los Angeles Times.
  14. Moll, John L. (1995). A Biographical Memoir of William Bradford Shockley (PDF). Washington, D.C.: National Academies Press.
  15. Shurkin 2006, pp. 38–39
  16. ^ Transistor – Innovation at Bell Labs Encyclopedia Britannica
  17. Cooper, David Y. (2000). Shockley, William Bradford (13 February 1910–12 August 1989), physicist. American National Biography Online. Oxford University Press. doi:10.1093/anb/9780198606697.article.1302153.
  18. Shurkin 2006, p. 48
  19. Broken Genius p. 65–67
  20. Dean Barrett, David (2020). 140 days to Hiroshima : the story of Japan's last chance to avert Armageddon. New York. ISBN 978-1-63576-580-9. OCLC 1149147965.{{cite book}}: CS1 maint: location missing publisher (link)
  21. ^ Shurkin 2006, p. 85
  22. Giangreco 1997, p. 568
  23. Newman, Robert P. (1998). "Hiroshima and the Trashing of Henry Stimson". The New England Quarterly. 71 (1): 27. doi:10.2307/366722. JSTOR 366722.
  24. The Artful Universe by John D. Barrow, Clarendon Press, Oxford, 1995, p. 239
  25. Brattain quoted in Crystal Fire p. 127
  26. ^ Crystal Fire p.132
  27. CA 272437  "Electric current control mechanism", first filed in Canada on October 22, 1925
  28. Lilienfeld Archived October 2, 2006, at the Wayback Machine
  29. "William Shockley". IEEE Global History Network. IEEE. Retrieved July 18, 2011.
  30. ^ Michael Riordan & Lillian Hoddeson (1998). Crystal fire: the invention of the transistor and the birth of the information age. W. W. Norton & Company. ISBN 978-0-393-31851-7.
  31. Hoddeson, Lillian; Daitch, Vicki (2002). True genius: the life and science of John Bardeen : the only winner of two Nobel prizes in physics. Joseph Henry Press. ISBN 978-0-309-08408-6. Retrieved December 30, 2014.
    • Diana Buchwald (March–April 2003). "John Who?". American Scientist. Vol. 91, no. 2. Archived from the original on January 2, 2015.
  32. Brittain 1984, p. 1695 "an observation that William Shockley interpreted as confirmation of his concept of that junction transistor"
  33. "Inventors of the transistor followed diverse paths after 1947 discovery". Associated press – Bangor Daily news. December 25, 1987. Retrieved May 6, 2012. 'mixture of cooperation and competition' and 'Shockley, eager to make his own contribution, said he kept some of his own work secret until "my hand was forced" in early 1948 by an advance reported by John Shive, another Bell Laboratories researcher'
  34. Broken Genius, p 121-122
  35. "1951 – First grown-junction transistors fabricated". Computer History Museum. 2007. Retrieved July 3, 2013.
  36. "Comstock Prize".
  37. ScienCentral, ScienCentral. "Bill Shockley, Part 3 of 3". www.pbs.org.
  38. Crystal Fire p. 278
  39. ^ "Transistorized! William Shockley". www.pbs.org. 1999. Retrieved July 10, 2022.
  40. "Holding On". The New York Times. April 6, 2008. Retrieved December 7, 2014. In 1955, the physicist William Shockley set up a semiconductor laboratory in Mountain View, partly to be near his mother in Palo Alto. ...
  41. "Two Views of Innovation, Colliding in Washington". The New York Times. January 13, 2008. Retrieved December 7, 2014. The co-inventor of the transistor and the founder of the valley's first chip company, William Shockley, moved to Palo Alto, Calif., because his mother lived there. ...
  42. ^ "Electronics Pioneer William Shockley's Legacy". NPR.org. Retrieved July 17, 2022.
  43. "Silicon Valley | American Experience | PBS". www.pbs.org. 2013. Retrieved July 10, 2022.
  44. ^ Crystal Fire p. 247
  45. Goodheart 2006 "Fed up with their boss, eight lab workers walked off the job on this day in Mountain View, Calif. Their employer, William Shockley, had decided not to continue research into silicon-based semiconductors; frustrated, they decided to undertake the work on their own. The researchers — who would become known as 'the traitorous eight' — went on to invent the microprocessor (and to found Intel, among other companies).
  46. Gregory Gromov. "A legal bridge spanning 100 years: from the gold mines of El Dorado to the "golden" startups of Silicon Valley".
  47. Dawn Levy (October 22, 2002). "William Shockley: still controversial, after all these years" (Press release). Stanford University. Archived from the original on April 4, 2005. Retrieved June 14, 2005.
  48. Crystal Fire p. 277
  49. Shurkin 2006, p. 52.
  50. "Firing Line with William F. Buckley Jr.: Shockley's Thesis (Episode S0145, Recorded on June 10, 1974)". YouTube. January 27, 2017. Archived from the original on November 17, 2021. Retrieved September 17, 2017.
  51. ^ Saini, Angela (2019). Superior : the return of race science. Boston. ISBN 978-0-8070-7694-1. OCLC 1091236746.{{cite book}}: CS1 maint: location missing publisher (link)
  52. Shurkin 2006, p. 221-223.
  53. Pearson, Roger (1992). Shockley on Eugenics and Race, pg. 15–49. Scott-Townsend Publishers. ISBN 1-878465-03-1
  54. ^ Epps, Edgar G (February 1973). "Racism, Science, and the I.Q." Integrated Education. 11 (1): 35–44. doi:10.1080/0020486730110105.
  55. ^ "William Shockley". Southern Poverty Law Center.
  56. Harris, Art (September 12, 1984). "The Shockley Suit". Washington Post. ISSN 0190-8286. Retrieved March 29, 2023.
  57. Shurkin 2006, p. 219-220.
  58. Kessler, Ronald. "Absent at the Creation; How one scientist made off with the biggest invention since the light bulb". Archived from the original on February 24, 2015.
  59. Shurkin 2006, pp. 259–260 "Essentially, the jury agreed that Witherspoon's column met the standards of defamation, but that by then, Shockley's reputation wasn't worth very much."
  60. Shurkin 2006, p. 286
  61. Moll, John L. (1995). "William Bradford Shockley 1910—1989" (PDF). National Academy of Sciences.
  62. "Shockley, Nobel Winner, Files for Senate Race in California". The New York Times. February 12, 1982.
  63. "CA US Senate – D Primary". OurCampaigns. Retrieved November 12, 2019.
  64. Shurkin 2006, p. 268.
  65. "The Gazette from Montreal, Quebec, Canada". Newspapers.com. March 28, 1985. Retrieved February 8, 2024.
  66. Shurkin, Joel N. (2008). "Broken Genius". SpringerLink. doi:10.1007/978-0-230-55229-6. ISBN 978-0-230-55192-3.
  67. ^ Tucker, William H. (1994). The Science and Politics of Racial Research. University of Illinois Press. ISBN 978-0-252-06560-6.
  68. ^ "William Shockley". Southern Poverty Law Center. Retrieved February 8, 2024.
  69. Lichtenstein, Grace (December 11, 1977). "Fund Backs Controversial Study of 'Racial Betterment'". The New York Times.
  70. "The Delta Democrat-Times from Greenville, Mississippi". Newspapers.com. April 29, 1970. Retrieved February 8, 2024.
  71. A Science Odyssey: People and Discoveries: William Shockley PBS
  72. Hoddeson, Lillian (2002). True genius : the life and science of John Bardeen : the only winner of two Nobel Prizes in physics. Vicki Daitch. Washington, District of Columbia. ISBN 0-309-16954-2. OCLC 1162253791.{{cite book}}: CS1 maint: location missing publisher (link)
  73. "Shockley's Ceiling". Mountain Project. Retrieved December 12, 2018.
  74. "Rock Climb The Ceiling, The Gunks". Mountain Project. Retrieved September 16, 2020.
  75. Crystal Fire p. 45
  76. Kulman, Doris (September 19, 1982). "'Banker's' assets misdirected". The Daily Register. p. 47. According to the bank's owner-operator, California millionaire Robert T. Graham, three Nobel Prize-winning scientists are among those who have sperm on deposit.
  77. Polly Morrice (July 3, 2005). "The Genius Factory: Test-Tube Superbabies". The New York Times. Retrieved February 12, 2008.
  78. "William B. Shockley, 79, Creator of Transistor and Theory on Race". The New York Times. August 14, 1989. Archived from the original on October 15, 2009. Retrieved July 21, 2007. He drew further scorn when he proposed financial rewards for the genetically disadvantaged if they volunteered for sterilization.
  79. "William Shockley (Part 3 of 3): Confusion over Credit". PBS. 1999. Retrieved January 1, 2015.
  80. "Comstock Prize in Physics". National Academy of Sciences. Archived from the original on December 29, 2010. Retrieved February 13, 2011.
  81. Editor, ÖGV. (2015). Wilhelm Exner Medal. Austrian Trade Association. ÖGV. Austria.
  82. "Google Patents assignee:(Shockley William)". patents.google.com. Retrieved December 12, 2020.
  83. Shockley, William (1971). "Models, Mathematics, and the Moral Obligation to Diagnose the Origin of Negro IQ Deficits". Review of Educational Research. 41 (4): 369–377. doi:10.3102/00346543041004369. ISSN 0034-6543. JSTOR 1169443.
  84. Shockley, William (1971). "Negro IQ Deficit: Failure of a "Malicious Coincidence" Model Warrants New Research Proposals". Review of Educational Research. 41 (3): 227–248. doi:10.2307/1169529. ISSN 0034-6543. JSTOR 1169529.
  85. Shockley, Wiliam; Shockley, William (1972). "Dysgenics, Geneticity, Raceology: A Challenge to the Intellectual Responsibility of Educators". The Phi Delta Kappan. 53 (5): 297–307. ISSN 0031-7217. JSTOR 20373194.
  86. Shockley, William (1972). "A Debate Challenge: Geneticity Is 80% for White Identical Twins' I.Q.'s". The Phi Delta Kappan. 53 (7): 415–419. ISSN 0031-7217. JSTOR 20373251.
  87. Shockley, William (1973). "Deviations from Hardy-Weinberg Frequencies Caused by Assortative Mating in Hybrid Populations". Proceedings of the National Academy of Sciences of the United States of America. 70 (3): 732–736. Bibcode:1973PNAS...70..732S. doi:10.1073/pnas.70.3.732. ISSN 0027-8424. JSTOR 62346. PMC 433346. PMID 4514986.

Other notes

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