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 ...
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...
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...
Energy data on the carbon‐carbon bond V. Energy of activation, Arrhenius constant and period of half‐life for the radical‐dissociation reaction of five hydrocarbons of the pentaphenylethane type in o‐dichlorobenzene as a solventDMRTsRT-PCR...
decreases in size by a factor of half / 2 1 T t. The new value of the decaying quantity is related to its initial value (at t = 0) by half / 2 1 value initial value new T tExample 5 Carbon-14 Decay Radioactive carbon-14 has a half-life of about 5700 years. It collects in...
Using different radioactive isotopes, the age of different objects on earth, or even celestial bodies, can be estimated but with a trade-off. Isotopes like carbon-14 give a greater deal of precision but have an maximum age of around 50,000 years...
Half Life Time:In nuclear chemistry, the total time in which the half amount of the radioactive element is decayed is known as half lifetime. The half lifetime is mainly considered for the nuclear element.Answer and Explanation: Given data The element is Radium-...
Gamma-ray astronomy has been one of the prime scientific research fields of the Max-Planck Institute for Extraterrestrial Physics (MPE) from its beginning. Over the years, the entire gamma-ray energy range accessible from space was explored. The purpose of this review article is to summarise the...