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Raymond Eldred Siday (1912–1956) was an English mathematician specialising in quantum mechanics. He was the brother of Eric Siday, a pioneer of electronic music. Raymond Siday is known for the Ehrenberg–Siday effect. ==Ehrenberg–Siday–Aharonov–Bohm effect == (詳細はAharonov–Bohm effect, is a quantum mechanical phenomenon by which a charged particle is affected by electromagnetic fields in regions from which the particle is excluded. The earliest form of this effect was predicted by Werner Ehrenberg and R. E. Siday in 1949, and similar effects were later rediscovered by Aharonov and Bohm in 1959. Such effects are predicted to arise from both magnetic fields and electric fields, but the magnetic version has been easier to observe. In general, the consequence of Aharonov–Bohm effects is that knowledge of the classical electromagnetic field acting locally on a particle is not sufficient to predict its quantum-mechanical behavior. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「R. E. Siday」の詳細全文を読む スポンサード リンク
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