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April 20, 2014

April 20, 2014

Posted by **M.T.** on Thursday, February 9, 2012 at 11:00pm.

- Intro to Astronomy -
**drwls**, Friday, February 10, 2012 at 8:57amIf 1% is left,

(0.01) = (0.5)^N

where N is the number of half-lives.

N = 6.644

minimum age = 37,900 years

There will be less than 1% left if the sample is older than that, so that is a minimum age.

There is not much about astronomy here

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