Noun1.half life- the time required for something to fall to half its initial value (in particular, the time for half the atoms in a radioactive substance to disintegrate) half-life period,period of time,time period- an amount of time; "a time period of 30 years"; "hastened the period...
half-life (haf'līf), The period in which the radioactivity or number of atoms of a radioactive substance decreases by half; similarly applied to any substance, such as a drug in serum, whose quantity decreases exponentially with time. Compare:half-time. ...
The half-life of carbon-14 is known to be 5,730 years, so we can use the half-life formula to calculate the elapsed time, or age of the material. Half-Life Formula for Time Elapsed By rearranging the half-life formula, we can solve for the amount of time elapsed by comparing the ...
Noun1.half-life- the time required for something to fall to half its initial value (in particular, the time for half the atoms in a radioactive substance to disintegrate) half life period,period of time,time period- an amount of time; "a time period of 30 years"; "hastened the period...
Radioactive datingis a clever use of naturally occurring radioactivity. Its most famous application iscarbon-14 dating. Carbon-14 has a half-life of 5730 years and is produced in a nuclear reaction induced when solar neutrinos strike14N in the atmosphere. Radioactive carbon has the same chemistr...
Also known as half-value period; radioactive half-life. McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc. half-life 1. the time taken for half of the atoms in a radioactive material to undergo decay. 2. the time required...
The fraction of the radio active carbon -14, that remains after a decay period of 17,100 year is View Solution The half - life of radium is 6400 years . The fraction of a sample of radium that would remain undecayed after 6400 years is View Solution A certain radioactive element has...
Energetic data on the carbon ‐ carbon bond IV. Energy of activation, arrhenius constant and period of half‐life for the radical‐dissociation reaction of six hydrocarbons of the pentaphenylethane type in o‐dichlorobenzene as a solventdoi:10.1002/recl.19480670608J. Coops...
Answer to: ^{32}P is a radioactive isotope with a half-life of 14.3 days. If you currently have 34.5 g of ^{32}P, how much ^{32}P was present 6.00...
While our results are second half weighted given the Autumn peak trading period, our performance since the start of the second half, has been in line with our expectations. Despite the challenging market conditions, the progress of our strategic initiatives and current trading momentum gives us con...