However, radioisotope dating may not work so well in the future.
Anything that dies after the 1940s, when Nuclear bombs, nuclear reactors and open-air nuclear tests started changing things, will be harder to date precisely.
Could there be other influences that would affect the rate of decay of carbon 14?
If it has generally been established as a constant, at what point does the "constant" break down?
The carbon-14 decays with its half-life of 5,700 years, while the amount of carbon-12 remains constant in the sample.
Where "A bit" is a few parts in a trillion or less, most likely very much less.This means that we need a pipe that is 10.3 feet long in order for the pollutants to be reduced to 10% of their starting amount.Archaeologists use the exponential, radioactive decay of carbon 14 to estimate the death dates of organic material.The kerosene is purified by removing pollutants, using a clay filter.Suppose the clay is in a pipe and as the kerosene flows through the pipe, every foot of clay removes 20% of the pollutants, leaving 80%.