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Half-lifeThis article describes the scientific meaning. For the computer game, see Half-Life''. For a quantity subject to exponential decay, the half-life is the time required for the quantity to fall to half of its initial value. Quantities subject to exponential HalfbakeryThe Halfbakery is a communal web site that caters to people who wish to propose and develop novel, if not always serious, half-baked inventions. Among many similar such sites (e. ShouldExist, whynot. net, globalideasbank. org, idea-a-day. com), it has dis Half-reactionA half reaction is either the oxidation or reduction reaction component of a redox reaction. A half reaction is obtained by considering the change in oxidation states of individual substances involved in the redox reaction. Consider the reaction below: (1 Halftone characteristicIn telecommunication, the term halftone characteristic has the following meanings: # In facsimile systems, the relationship between the density of the recorded copy and the density of the object, i. the original. In facsimile systems, the relationship bet Half DomeHalf Dome is a granite dome formation at the eastern end of Yosemite Valley, possibly the Valley's most familiar sight. The granite crest rises more than 1,440 meters (4,737 feet) above the Valley floor. As late as the 1870s, Half Dome was considered comp Half-LifeThis article describes the computer game. For the meanings in chemistry and other sciences, see half-life. Half-Life is a first-person shooter computer game developed by Valve Software and published by Sierra On-Line in 1998, based on a heavily-modified Q Halftone Half Past Dead Halfdan the Black Half note Half Moon Bay, California Half step Halfway, Maryland Halfway, Missouri Halfmoon, New York