Tau (particle) Another one is an onium atom called "true tauonium" and is difficult to detect due to tau's extremely short lifetime at low (non-relativistic) energies needed to form this atom. Its detection is important for quantum electrodynamics. Tau (particle) The tau (τ), also called the tau lepton, tau particle, or tauon, is an elementary particle similar to the electron, with negative electric charge and a spin of. Together with the electron, the muon, and the three neutrinos, it is a lepton. Like all elementary particles with half-integer spin, the tau has a corresponding antiparticle of opposite charge but equal mass and
Avery (given name) the 634th most common given name for males in the United States in the 1910 census. In the Russian language, Avery () is a colloquial form of the male given name Averky. Avery (given name) Avery is a given name, which was originally an English surname, that was itself derived from an Old French version of the name Alfred or the Ancient Germanic name Alberich. The meaning of the name is derived from the Old English words "aelf", meaning "elf", and "raed", meaning "counsel." Avery was originally more common as a boys' name, but it is becoming more popular and