...the phenomenon in which mechanical rotational motion occurs in a sample due to magnetization of a magnetic material. It was discovered in 1915 by A. Einstein and Wander Johannes de Haas (1878-1960). If a magnetic rod is suspended, a coil is wound around it, and magnetization ⊿ M is generated through the passage of an electric current, a change ⊿ J mag occurs in the angular momentum of the magnetic carrier, given by ⊿ M = γ ⊿ J mag (γ is the magnetic angular momentum ratio). … *Some of the terminology references "de Haas, WJ" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…磁性体が磁化したことによりその試料に力学的回転運動が生ずる現象。1915年,A.アインシュタインとド・ハースWander Johannes de Haas(1878‐1960)によって発見された。磁性体の棒をつり下げ,これにコイルを巻いて電流を通じて磁化⊿Mを生ぜしめれば,磁気の担い手のもつ角運動量には, ⊿M=γ⊿Jmagで与えられる変化⊿Jmagが生ずる(γは磁気角運動量比)。… ※「de Haas,W.J.」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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