HALFLIFE
Half-Life
Half-Life is a science fiction video game developed by Valve Corporation, the company's debut product and the first in the Half-Life series. First released in 1998 by Sierra Studios for Windows PCs, the game was also released for the PlayStation 2; Mac OS X and Linux ports became available in January 2013. In Half-Life, players assume the role of Dr. Gordon Freeman, a theoretical physicist who must fight his way out of a secret underground research facility whose research and experiments into teleportation technology have gone disastrously wrong.The above text is a snippet from Wikipedia: Half-Life (video game)
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Half-life
Half-life is the amount of time required for a quantity to fall to half its value as measured at the beginning of the time period. While the term "half-life" can be used to describe any quantity which follows an exponential decay, it is most often used within the context of nuclear physics and nuclear chemistry—that is, the time required, probabilistically, for half of the unstable, radioactive atoms in a sample to undergo radioactive decay.The above text is a snippet from Wikipedia: Half-life
and as such is available under the Creative Commons Attribution/Share-Alike License.