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Half-life is a mathematical and scientific description of exponential or gradual decay.

Half-life, half life or halflife may also refer to:

Film

• Half-Life (film), a 2008 independent film by Jennifer Phang
• Half Life: A Parable for the Nuclear Age, a 1985 Australian documentary film

Literature

• Half Life (Jackson novel), a 2006 novel by Shelley Jackson
• Half-Life (Krach novel), a 2004 novel by Aaron Krach
• Halflife (Michalowski novel), a 2004 novel by Mark Michalowski
• Rozpad połowiczny (Half-Life), a 1988 award-winning dystopia novel by Edmund Wnuk-Lipiński

Music

• Half Life (3 album) (2001)
• Halflife (EP), an EP by Lacuna Coil and the title track
• Half-Life E.P., an EP by Local H
• "Half Life", a song by 10 Years from The Autumn Effect
• "Half Life", a song by Come from Near-Life Experience
• "Half Life", a song by Imogen Heap from her album Ellipse
• "Half Life", a song by Prototype from the album Trinity
• "Half Life", a song by Swans from the album Cop
• "Half Life", a song by Trocadero from the album Roses Are Red, Violets Are Blue
• "Half-Life", a song by X Ambassadors from the album Townie
• Halflives, a French-Italian alternative rock band

Television episodes

• "Half-Life", Icons season 3, episode 17 (2004)
• "Half-Life", Odyssey 5 episode 17 (2002)
• "Half Life", La Femme Nikita season 2, episode 7 (1998)
• "Half Life", Logan's Run episode 6 (1977)
• "Half Life", Medical Investigation episode 17 (2005)
• "Half Life", New Tricks series 8, episode 9 (2011)
• "Half Life", Sea Patrol season 3, episode 7 (2009)
• "Half Life", SeaChange season 3, episode 13 (2000)

Video games

• Half-Life (series), a video game series developed by Valve
  • Half-Life (video game), the first game in the series
  • Half-Life: Blue Shift, expansion to Half-Life
  • Half-Life: Opposing Force, expansion to Half-Life
  • Half-Life: Decay, multiplayer expansion to Half-Life
  • Half-Life 2, the second game in the series
  • Half-Life: Alyx, a prequel to the events in the second game

See also

• Biological half-life, the time it takes for a substance to lose half of its pharmacologic, physiologic, or radiologic activity
• Effective half-life, the effective radioactive half-life in organisms after accounting for excretion
• Half a Life (disambiguation)

• Disambiguation pages