Glossary of Scientific Terms

Joule

Previous Term

(Joule)

Glossary Main Index

Next Term

(Liquid Nitrogen)

Liquid Nitrogen

Lepton

Leptons are particles with little mass that interact through the electromagnetic and weak forces. There are six known leptons: the electron, the muon, the tau (all with a charge of -1), the electron neutrino, the muon neutrino and the tau neutrino (all without charge). Leptons have a spin of 1/2 and are believed to be fundamental particles.