half Life
Jan 30, 2006 22:23:54 GMT -5
Post by LoRd★YaKoV on Jan 30, 2006 22:23:54 GMT -5
definition for Half Life lol!! enjoy it
Half-Life
The time required for a population of atoms of a given radionuclide to decrease, by radioactive decay,
to exactly one-half of its original number is called the radionuclide's half-life. No operation, either
chemical or physical, can change the decay rate of a radioactive substance. Half-lives range from much
less than a microsecond to more than a billion years. The longer the half-life the more stable the nuclide.
After one half-life, half the original atoms will remain; after two half-lives, one fourth (or 1/2 of 1/2)
will remain; after three half-lives one eighth of the original number (1/2 of 1/2 of 1/2) will remain; and so on.
Half-Life
The time required for a population of atoms of a given radionuclide to decrease, by radioactive decay,
to exactly one-half of its original number is called the radionuclide's half-life. No operation, either
chemical or physical, can change the decay rate of a radioactive substance. Half-lives range from much
less than a microsecond to more than a billion years. The longer the half-life the more stable the nuclide.
After one half-life, half the original atoms will remain; after two half-lives, one fourth (or 1/2 of 1/2)
will remain; after three half-lives one eighth of the original number (1/2 of 1/2 of 1/2) will remain; and so on.
