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Weiss magneton
The Weiss magneton was an experimentally derived unit of magnetic moment equal to joules per tesla, which is about 20% of the Bohr magneton. It was suggested in 1911 by Pierre Weiss.〔
==Origin==
The idea of elementary magnets originated from the Swiss physicist Walther Ritz, who tried to explain atomic spectra. In 1907 he suggested that atoms might contain chains of magnetized and neutral rods, which were the cause of magnetic properties of materials. Just like elementary charges, this was supposed to give rise to discrete values of the total magnetic moment per atom.〔
〕 In 1909, Weiss performed measurements of the saturation magnetization at the temperature of liquid hydrogen in the laboratory of Heike Kamerlingh Onnes in Leiden. In 1911, Weiss announced that the molar moments of nickel and iron had the ratio of 3:11, from which he derived the value of a magneton.〔
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抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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