concepts
type: Collection
type: ConceptGroup
member: half-life

half-life
type: Concept
broader: time (physics)
definition: A measure of the rate of disintegration of a radionuclide or radioactive isotope. It is the time taken for a quantity of a radioactive isotope to reduce by a half by radioactive decay. [Source: Encyclopedia of Environmental Change; half-life]

time (physics)
type: Concept
narrower: half-life