Jisho

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りゅう 粒子
Noun
1. muonPhysics
Wikipedia definition
2. MuonThe muon is an elementary particle similar to the electron, with unitary negative electric charge (-1) and a spin of ⁄2. Together with the electron, the tau, and the three neutrinos, it is classified as a lepton. As is the case with other leptons, the muon is not believed to have any sub-structure at all (i.e. , is not thought to be composed of any simpler particles). The muon is an unstable subatomic particle with a mean lifetime of 2.2 µs.
Read “Muon” on English Wikipedia
Read “ミュー粒子” on Japanese Wikipedia
Read “Muon” on DBpedia
Other forms
μ粒子 【ミューりゅうし】

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