Carbon dating method reliable
The isotope of Potassium-40, which has a half-life of 1.25 Billion years, can be used for such long measurements.
Another absolute dating method is thermoluminescence, which dates the last time an item was heated.
For dates that are both important and contentious, it is usual to employ a number of laboratories for samples from the same source in an effort to reduce bias.
However, results have a tendency to support the person paying.
Relative techniques can determine the sequence of events but not the precise date of an event, making these methods unreliable.
b) Absolute These methods are based on calculating the date of artefacts in a more precise way using different attributes of materials.
Once you heat this item again using high temperatures, the trapped electrons become excited and recombine with the item’s material.
This process frees energy in the form of light, which can be measured.
It is the only method that can be used to date rocks, pottery and minerals for dates that are approximately between 300 to 10,000 years old.