Half Life. Half life is defined as the amount of time it takes a given quantity to decrease to half of its initial value. ˈhaf ˌlīf ˈhäf.
The player takes the perspective of the scientist gordon freeman who struggles to escape an underground research facility after a failed experiment causes a massive alien invasion through a dimensional rift. Named game of the year by over 50 publications valve s debut title blends action and adventure with award winning technology to create a frighteningly realistic world where players must think to survive. Plural half lives ˌlīvz.
First released for windows in 1998 this action game redefined the way videogames incorporated storytelling and world building.
English language learners definition of half life. Half life stylized as hλlf life is a science fiction first person shooter developed and published by valve. Half life in radioactivity the interval of time required for one half of the atomic nuclei of a radioactive sample to decay change spontaneously into other nuclear species by emitting particles and energy or equivalently the time interval required for the number of disintegrations per second of a radioactive material to decrease by one half. The term is also used more generally to characterize any type of exponential or non exponential decay.
