After 5,730 years, the amount of carbon 14 left in the body is half of the original amount.
If the amount of carbon 14 is halved every 5,730 years, it will not take very long to reach an amount that is too small to analyze.
One specific example of exponential decay is purified kerosene, used for jet fuel.
The kerosene is purified by removing pollutants, using a clay filter.
Plutonium 239 decays exponentially into lead, but it causes concerns for humans because the tiny particles of plutonium react with oxygen and water and can be extremely flammable.
I am just learning the recipe so it takes me more time to look back and forth and double check.
When an organism dies it ceases to replenish carbon in its tissues and the decay of carbon 14 to nitrogen 14 changes the ratio of carbon 12 to carbon 14.
Experts can compare the ratio of carbon 12 to carbon 14 in dead material to the ratio when the organism was alive to estimate the date of its death.
We can use exponential decay to represent a number of different things.
Most importantly, exponential decay is not linear and the decrease is rapid at first, but not constant.