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half-life The time needed for half of a radioactive isotope to decay and form a stable element. This known rate of decay is used in radiometric dating, such as radiocarbon dating, to determine the age of objects.
Ãâó: www.archaeological.org/webinfo.php
half-life The time required for half the amount of a drug to be eliminated from the body.
Ãâó: www.allabouthepatitisc.com/readytolearn/utils/glos...
half-life the amount of time it takes for half of the existing amount of a radioactive element to decay to non-radioactive products.
Ãâó: www.ieainstitute.com/IndoorAirQuality/knowledge-ba...
half-life The amount of time it takes for the radioactivity of a radioactive material to be reduced by half.
Ãâó: www.stoller-eser.com/Annuals/2003/AppendixE.htm
half-life The amount of time required for one-half of the nuclides in a sample of radioactive isotope to decay.
Ãâó: jmsscienceweb.tripod.com/vocabulary.htm
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