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| 2. |
Technique
of Dating:
- Measure counts of 14C from samples will generate the amount
of 14C.
- Need to know decay rate. i.e. T½ = 5,760 years. Mean life
of 14C = 8,300 years.
- Need to know amount at the beginning. i.e. T0 then
we can calculate the age.
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| 3. |
Assumptions:
- Cosmic ray effect on nitrogen
to form 14C has not varied.
- 14C concentration in life has not varied
over time.
- the ½ life of 14C is accurately known.
- 14C decay rate has
never varied over time.
- There has been no contamination with 14C and
no loss of 14C.
- Lab results are accurate and reproducible. (No equipment
is capable of really old dates because of low levels of counts)
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