Maximum age carbon 14 dating can used
Here, 7 protons and 7 neutrons (N) plus one neutron form an isotope of carbon, with 8 neutrons and 6 protons. Radiocarbon dating can easily establish that humans have been on the earth for over twenty thousand years, at least twice as long as creationists are willing to allow.Living organisms absorb carbon (for example, we breathe it in). This carbon is therefore present in their bodies and bones. By examining the object's relation to layers of deposits in the area, and by comparing the object to others found at the site, archaeologists can estimate when the object arrived at the site.Though still heavily used, relative dating is now augmented by several modern dating techniques.
The highest rate of carbon-14 production takes place at altitudes of 30,000 to 50,000 feet, and at higher geomagnetic latitudes, but the carbon-14 spreads evenly throughout the atmosphere and reacts with oxygen to form carbon dioxide.
Carbon has two stable, nonradioactive isotopes: carbon-12 (12C), and carbon-13 (13C).
In addition, there are tiny amounts of the unstable isotope carbon-14 (14C) on Earth.
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.