Physics. the time required for one half the atoms of a given amount of a radioactive substance to disintegrate. Also called bi·o·log·i·cal half-life [bahy, uh, -, loj, ik, uh, l , haf, -lahyf]. Pharmacology. the time required for the activity of a substance taken into the ...
Physics.the time required for onehalfthe atoms of a given amount of a radioactive substance to disintegrate. Also calledbi·o·log·i·cal half-life[bahy, uh, -, loj, ik, uh, l , haf, -lahyf].Pharmacology.the time required for the activity of a substance taken into the body to lo...
"unsatisfactory way of living," from half + life; the sense in physics, "amount of time… See origin and meaning of half-life.
The meaning of HALF-LIFE is the time required for half of something to undergo a process. How to use half-life in a sentence.
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback. Recent Examples of half-life Carbon-14 has a half-life of about 5,730 years, meaning the battery can theoretically last thousands of years, with diminishing output over time. Jess...
NDT Resource Center: Radioactive Half-Life Chemistry LibreTexts: Types of Radioactivity Georgia State University HyperPhysics: Radioactive Half-Life Cite This Article MLA Fore, Meredith. "Half-Life: Definition, Equation"sciencing.com, https://www.sciencing.com/half-life-definition-equation-13722574/....
The expression 'half-life', borrowed from physics, has appeared quite frequently in the literature on documentation since 1960, when an article by Burton and Kebler on The 'half-life' of some scientific and technical literatures was published, although it had certainly been used previously. ...
Half-Life:The half-life of a substance that decays exponentially is the amount of time it takes for the amount of the substance to be reduced by half. The half-life for a particular substance is a constant, meaning that it does not matter the original amount of the substance - it will...
The Half-Life of a chemical reaction can be defined as the time taken for the concentration of a given reactant to reach 50% of its initial concentration.
biological half-life T1/2 Biology The time required for 1⁄2 of the total amount of a particular substance in a biologic system to be degraded by biological processes when the rate of removal is nearly exponential Radiation physics The length of time required for1/2 of a radioactive substan...