Mean lifetime

Mean lifetime is like how long you can expect a toy or a snack to last before it breaks or you finish eating it. For example, if you have a toy that usually lasts 10 days before it breaks and you always get a new toy when the old one breaks, the mean lifetime of your toys is 10 days.

In science, mean lifetime is used to describe how long a particle or an atom will last before it decays or breaks down. Just like with toys, scientists can figure out how long different particles or atoms usually last before they decay. They use this information to calculate the mean lifetime of those particles or atoms.

Knowing the mean lifetime of particles or atoms is important for understanding how they behave and interact with other particles or atoms. It can also help scientists create new technologies or discover more about how the universe works.