Physics the full time necessary for 1 / 2 the nuclei in a sample of a specific isotopic types to undergo radioactive decay.
Biology the full time needed for one half the number of a drug or any other substance deposited in a living organism to be metabolized or eliminated by regular biological procedures. Also referred to as biological half-life.
Biology enough time needed for the radioactivity of material drawn in by a full time income system is paid off to half its initial worth by a mixture of biological removal processes and radioactive decay.
The time needed for half the nuclei in an example of a particular isotope to undergo radioactive decay.
In a chemical effect, the time needed for the focus of a reactant to fall from a chosen value to half that price.
The time it takes for a substance (medication, radioactive nuclide, or other) to get rid of 1 / 2 of its pharmacological, physiologic, or radiological task.
enough time it will require for a notion or a fashion to lose 50 % of its important energy.
the full time it will take for one-half of a substance decaying in a first-order reaction to be damaged. For radioactive substances, it will be the time required for one-half associated with the preliminary amount of the radioactive isotope to decay. The half-lifeis a measure for the rate associated with the response being seen. For processes which can be true first-order procedures, such as for instance radioactive decay, the half-life is independent of the volume of product current, and it's also hence a consistent. The full time it takes for one-half the residual level of a radioactive isotope to decay will be the same regardless of how far the decay process features advanced level. Some chemical responses will also be first-order, that will be characterized as having a half-life. However, for chemical reactions the half-life depends upon temperature and perhaps other ecological circumstances, whereas for radioactive isotopes the price of decay is basically independent of the environment.
the time necessary for something to fall to half its initial value (specifically, enough time for one half the atoms in a radioactive compound to disintegrate)
enough time necessary for something to-fall to half its initial value (in particular, enough time for 1 / 2 the atoms in a radioactive material to disintegrate)