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Lepton

From Online Dictionary of Crystallography

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Lepton (Fr), Lepton (Ge), Leptón (Sp), Лептон (Ru), Leptone (It), レプトン (Ja).


Lepton is a term introduced by Friedrich Rinne in his book Crystals and the Fine-Structure of Matter (London: Methuen & Co., 1924, English translation by S. W. Stiles) to indicate electrons, atoms, ions, radicals, and molecules building the unit formula of a crystalline compound. The crystal structure of a solid was sometimes called "leptonic structure".

Today, the term lepton is used to indicate spin-1/2 particles and Rinne's use is only of historical interest.

Reference

Review of Rinne's book by A. N. Winchell