In biological systems, this quantity's effective kind equals the reciprocal of the sums of the reciprocals of the biological and physical values for it. This quantity is related to the energy of an alpha particle in a law named for Geiger and Nuttall. This quantity equals initial concentration over twice k for a zeroth order reaction, while it is concentration-independent for a first-order reaction and equals the natural log of 2 over the rate co
In biological systems, this quantity's effective kind equals the reciprocal of the sums of the reciprocals of the biological and physical values for it. This quantity is related to the energy of an alpha particle in a law named for Geiger and Nuttall. This quantity equals initial concentration over twice k for a zeroth order reaction, while it is concentration-independent for a first-order reaction and equals the natural log of 2 over the rate constant. Radiocarbon dating makes use of this value's quantity for carbon-14 decay of 5730 years. For 10 points, name this quantity used frequently when describing radioactive decay, the length of time for fifty percent of a compound to be consumed.
In biological systems, this quantity's effective kind equals the reciprocal of the sums of the reciprocals of the biological and physical values for it.
{half-life}