half-life – מילון אנגלי-אנגלי
Half-life
Half-life (
t1/2) is the amount of time required for the amount of something to fall to half its initial value. The term is very commonly used in
nuclear physics to describe how quickly unstable atoms undergo
radioactive decay, but it is also used more generally for discussing any type of
exponential decay.
Half-life (disambiguation)
Half-life is a mathematical and scientific description of exponential or gradual decay.
half life
Noun
1. the time required for something to fall to half its initial value (in particular, the time for half the atoms in a radioactive substance to disintegrate)
(synonym) half-life
(hypernym) time period, period of time, period
half-life
Noun
1. the time required for something to fall to half its initial value (in particular, the time for half the atoms in a radioactive substance to disintegrate)
(synonym) half life
(hypernym) time period, period of time, period
half-life
n.
poločas rozpadu
Half-life
half-life
The time required for the activity of a given radioactive species to decrease to half of its initial value due to radioactive decay. The half-life is a characteristic property of each radioactive species and is independent of its amount or condition. The effective half-life of a given isotope is the time in which the quantity in the body will decrease to half as a result of both radioactive decay and biological elimination. 1/3/73
période radioactive
Temps pendant lequel la moitié des noyaux radioactifs d'un échantillon se sont désintégrés. La période est une caractéristique propre à chacun des corps radioactifs; elle ne dépend ni de la quantité ni de l'état de ces corps. La période "effective" d'un isotope déterminé est le temps pendant lequel le nombre des noyaux présents dans le corps humain a diminué de moitié, en raison de la désintégration des noyaux et de l'élimination biologique. 1/3/73
