If you have 100 muons just sitting there, after 2.2 microseconds there will be about 50 left. The 2.2 microseconds is time that has passed for the muon.
So, if you had 100 muons, 2.2 microseconds later you should only have 50 muons. The half-life of a particle is how long the particle has to wait until it had a 50-50 chance of decaying.įor example, muons have a half-life of about 2.2 microseconds. Many subatomic particles are not stable, and so, after a short time, some of them decay (change into something else). Most of you are probably familiar with half-life.
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