A slot car (sometimes, slotcar) is a powered miniature auto or other vehicle that is guided by a groove or slot in the track on which it runs.
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The muon (/ËmjuËÉn/ ; from the Greek letter mu (Î¼) used to represent it) is an elementary particle similar to the electron, with electric charge of â1 e and a spin of 1â2, but with a much greater mass (7002105700000000000â 105.7 MeV/c2).he decay of the muon (as well as of the neutron, the longest-lived unstable baryon), is mediated by the weak interaction exclusively. Muon decay always produces at least three particles, which must include an electron of the same charge as the muon and two neutrinos of different types.