Carbon dating equation with half life

We need to make sure that we’re only measuring the beta radiation from the carbon-14.

Even though carbon-14 causes around half of the internal radioactivity of living things, it’s only around 0.25 Bq per gram.

This rather complex formula shows you how to solve this puzzle using accepted scientific methods.

We’re going to see what 'half-life' means and why radioactivity changes with time. It doesn’t depend on the size of the sample and it doesn’t change with time. So we imagine going in forward one half-life at a time from ZERO years: 10 years, 20 years, 30 years, etc.

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Other radio-dating techniques are used to date ancient rocks.All green plants make their own food in their leaves. A tiny fraction of carbon atoms are the radioactive isotope carbon-14.Carbon-14 is produced in the upper atmosphere by cosmic rays.If a fossil contains 60% of its original carbon, how old is the fossil? That means this is how long it takes for half the nuclei to decay.After 5600 years, if we start with a gram, we end up with half a gram.