A half-life usually describes the decay of discrete entities, such as radioactive atoms. Instead, the half-life is defined in terms of probability: "Half-life is the time required for exactly half of the entities to decay on average".
Regarding this, what is the concept of half life?
the time required for one half the atoms of a given amount of a radioactive substance to disintegrate. Also called biological half-life. Pharmacology. the time required for the activity of a substance taken into the body to lose one half its initial effectiveness.
What is a half life in science?
For example, the half-life of a radioactive substance is the amount of time it takes for half of its atoms to decay, and the half-life of a drug is the amount of time it takes before half of the active elements are either eliminated or broken down by the body.
What is the definition of Half Life in biology?
This is the period of time required for the concentration or amount of drug in the body to be reduced by one-half. We usually consider the half life of a drug in relation to the amount of the drug in plasma. A drug's plasma half-life depends on how quickly the drug is eliminated from the plasma.