It is the time required for any specified property (e.g. the concentration of a substance in the body) to reduce to half its initial value.
In Radioactive Decay : Half Life is the time taken for the radioactivity of a specified isotope to fall to half its original value. example : "iodine-131 has a half-life of 8.1 days".
Please enter the details below to calculate Half life of a radioactive substance.
