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MAPS<ref>Nicholas V. Cozzi, Ph.D. </ref> also reviewed a study that examined the effects and composition of water-filtered and non-filtered ] and ]. It found that when ] ]s were exposed to unfiltered smoke, their ability to fight bacteria was reduced, unlike exposure to water-filtered smoke. It also found substantial epidemiological evidence of a lower incidence of ] among tobacco smokers who used water-pipes, as opposed to ], ], and regular ]. "It appears that water filtration can be effective in removing components from cannabis smoke that are known toxicants... The effectiveness of toxicant removal is related to the smoke's water contact area. Specially designed water pipes, incorporating particulate filters and gas-dispersion ], would likely be most effective in this regard; the gas-dispersion frit serves to break up the smoke into very fine bubbles, thereby increasing its water-contact area."<ref>Nicholas V. Cozzi, Ph.D. </ref> This study suggests that a bong's smoke is less harmful than unfiltered smoke.
MAPS<ref>Nicholas V. Cozzi, Ph.D. </ref> also reviewed a study that examined the effects and composition of water-filtered and non-filtered ] and ]. It found that when ] ]s were exposed to unfiltered smoke, their ability to fight bacteria was reduced, unlike exposure to water-filtered smoke. It also found substantial epidemiological evidence of a lower incidence of ] among tobacco smokers who used water-pipes, as opposed to ], ], and regular ]. "It appears that water filtration can be effective in removing components from cannabis smoke that are known toxicants... The effectiveness of toxicant removal is related to the smoke's water contact area. Specially designed water pipes, incorporating particulate filters and gas-dispersion ], would likely be most effective in this regard; the gas-dispersion frit serves to break up the smoke into very fine bubbles, thereby increasing its water-contact area."<ref>Nicholas V. Cozzi, Ph.D. </ref> This study suggests that a bong's smoke is less harmful than unfiltered smoke.
a bong i also different to a pipe or cigarette because with a bong
the user fills up the chamber of the bong with smoke and then quickly
takes it in via (A) a bullet hole or carb wich is a dime sized hole wich the user covers with there finger till the chamber is full and then removes there finger to let in a burst of air witch rushes the smoke in to the users lungs. (B) a slide witch is were the bowl of the bong is removable wich creates a air flow just like a bullet hole/carb.
A bong, also commonly known as a water pipe, is a smoking device, generally used to smoke cannabis, tobacco, or other substances. The construction of a bong and its principle of action is similar to that of the hookah, which is also called "water pipe." Smoking a bong contrasts with smoking a pipe or cigarette in two major ways: bongs cool the smoke before it enters the user’s lungs (making it easier to smoke), and a large amount of smoke is inhaled quickly as opposed to the smaller, more frequent, inhalations of pipe and cigarette smoking.
Etymology
The word bong is an adaptation of the Thai word baung (Template:Lang-th /bɔːŋ/), a cylindrical woodentube, pipe, or container cut from bamboo, and which also refers to the bong used for smoking. Bongs have been in use, primarily by the Hmong, in Laos and Thailand, for centuries. One of the earliest recorded uses of the word in Western literature dates to a piece in the January 1971 issue of the Marijuana Review. An even earlier reference, the McFarland Thai-English Dictionary, published in 1944 describes one of the meanings of bong in the Thai language as, "a bamboo waterpipe for smoking kancha, tree, hashish, or the hemp-plant."
Operation
A bong in useDiagram of a bong in operation.
To use a bong, the base of the bong pipe is filled with water. The substance to be smoked is packed into the cone piece (also known as the "bowl" or "bowl-piece") and ignited. The user places his/her lips inside the mouthpiece, forming a seal, and inhales, causing the flame to be drawn toward the substance. An inhalation is known as a "hit", "pull", "rip" or "toke." As the user inhales, the flame is drawn towards the substance, igniting it, and the smoke which is produced travels through a hollow pipe that is attached to the bottom of the bowl. The pipe enters via an airtight stem into a vessel containing water (or whatever other liquid is used). The smoke rises through the water, which cools the smoke, and then the smoke is trapped in the air chamber above the water. At the side or back of the bong, above the water level, there is usually a small air hole called a "carburetor", "carb", "choke", "shotgun", "shottie" or "rush hole". The user of the bong covers the carb with a finger until the material in the bowl has burnt away, then uncovers and pulls all the smoke from the bong into their lungs (called "clearing" the bong). Not all bongs use a carb, however. Many higher end models have a removable bowl piece which works the same as a carb. These are usually known as "pull-stem" or "slide" bongs, and usually glass bongs that have glass-on-glass connections have this arrangement.
A diagram of a carburetor hole bong. Note the hole on the left.
A variety of pipes and bongs for sale. In countries where marijuana is illegal, retailers often specify their use for tobacco in an attempt to circumvent laws against selling drug paraphernalia.
The rationale behind the use of a bong is the claim that the cooling effect of the water helps to reduce the chance of burning the mouth, airways, and lungs. The water can trap some heavier particles and water-soluble molecules, preventing them from entering the smoker's airways. This "filtration" can lead to the belief that bongs are less damaging than other smoking methods. However, a 2000NORML-MAPS study found that "water pipes filter out more psychoactive THC than they do other tars, thereby requiring users to smoke more to reach their desired effect". In the study, smoke from cannabis supplied by the NIDA was drawn through a number of smoking devices and analyzed. An inhalation machine, adjusted to mimic the puff length of cannabis smokers, drew smoke through a standard bong, a small portable bong with a folding stem, a bong with a motorized paddle that thoroughly mixes the smoke with the water, and two different types of vaporizers. Comparisons to traditional non-filtered smoking methods were not included in these experiment.
MAPS also reviewed a study that examined the effects and composition of water-filtered and non-filtered cannabis and tobacco smoke. It found that when alveolarmacrophages were exposed to unfiltered smoke, their ability to fight bacteria was reduced, unlike exposure to water-filtered smoke. It also found substantial epidemiological evidence of a lower incidence of carcinoma among tobacco smokers who used water-pipes, as opposed to cigarettes, cigars, and regular pipes. "It appears that water filtration can be effective in removing components from cannabis smoke that are known toxicants... The effectiveness of toxicant removal is related to the smoke's water contact area. Specially designed water pipes, incorporating particulate filters and gas-dispersion frits, would likely be most effective in this regard; the gas-dispersion frit serves to break up the smoke into very fine bubbles, thereby increasing its water-contact area." This study suggests that a bong's smoke is less harmful than unfiltered smoke.
Variations
A bong may be constructed from any air- and water-tight vessel by adding a bowl and stem apparatus (a slide); there are reports of such things as videogame controllers or coffee tables being used as bongs.
The text read: Many thanks to Scott Bennett for the beautiful special bong he made for my pipe collection. Text cited in bong, n.3The Oxford English Dictionary. 2nd ed. 1989. OED Online. Oxford University Press. 20 April 2006 http://dictionary.oed.com/cgi/entry/50024920
