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 (), 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 Duncan Sheik from Daylight "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 2: Lost Coast, expansion to Half-Life 2 that happens somewhere in-between chapters of Half-Life 2 Half-Life 2: Episode One, a shorter game following the events of Half-Life 2 Half-Life 2: Episode Two, a shorter game following the events of Episode One Half-Life: Alyx, a prequel to the events in Half-Life 2
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-life of knowledge, the amount of time that has to elapse before half of the knowledge or facts in a particular area is superseded or shown to be untrue Half a Life (disambiguation)