the time required for the number of nuclides in a radioactive sample to reach half of the original value
The amount of time that it takes for one half of an original population of atoms of a radioactive isotope to decay
The time over which the atoms of a particular radioactive nuclide decay to half their original intensity of emitted radiation The half-life is a characteristic property of each radioactive isotope
The time required for half the nuclei in a sample of a specific isotopic species to undergo radioactive decay
The time necessary for half of the atoms of a parent isotope to decay into the daughter isotope
The time in which half the atoms of a radioactive substance will have disintegrated, leaving half the original amount Half the residue will disintegrate in another equal period of time
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)
the time required for half of the amount of an agent (e g , drug, virus, cell type) to be eliminated from the body
The amount of time it takes half of a given quantity of a radioactive element to decay
The time required for the amount of a reactant to decrease to half its initial value
- The time required for half of any quantity of identical radioactive atoms to undergo radioactive decay, so that half of the atoms in the substance are no longer emitting radiation and are no longer considered to be radioactive
the time required for half the amount of a substance to be eliminated from the body or to be converted to another substance(s)