Carbon 14 dating allows the age of carbon based material to be estimated. Explain this process with reference to the carbon isotopes involved.
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Carbon 14 dating watch
- Thread Starter
- 20-10-2006 00:45
- 20-10-2006 01:12
Carbon in "carbon-based material" contains a constant ratio of the isotopes of carbon.
But carbon-14 decays as it is radioactive. (Carbon-12 and carbon-13 do not decay.)
From these two points, you can work out the age of a fossil by simple mass spectrometry and maths.
Check this link: http://science.howstuffworks.com/carbon-142.htm
- 20-10-2006 20:04
Um, carbon-14 has a half life of about 5600 years, i think.
There are about 1 in every 10 000 000 particles.
From this, you'll be able to work out the date of a object
i'll use an example:
A piece of cloth contains 1 in 40 000 000 particles. calculate the age from which this cloth is made.
at the time in which it was made, there'll be 1 in 10 000 000
after on half life, it'll have 1 in 20 000 000
after two half lives, it'll have 1 in 40 000 000.
So two half lives have passed.........two half lives = 5600*2 = 11200