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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Planck angle ： ウィキペディア英語版 Planck angle In physics, the Planck angle is a hypothesised limit on the smallest discernible angle. An observable example approaching this is the astronomical observation of one of the smaller astronomical bodies, a gamma ray burster, at the furthest possible observable distance. The angle subtended by such a small object, so far away, is considered to approach the Planck limit on angles. The Planck angle is denoted ''φ''p, is related to the ratio of the Planck length :$\backslash ell\_\backslash text\; =\backslash sqrt\backslash frac\; \backslash approx\; 1.616\backslash ;199\; (97)\; \backslash times\; 10^\; \backslash text$ to the classical electron radius or "electromagnetic length" :$r\_\backslash text\; =\; \backslash frac\backslash frac\; =\; 2.817\; 940\; 3267(27)\; \backslash times\; 10^\; \backslash text,$ so that :$\backslash varphi\_\backslash text\; \backslash sim\; \backslash frac\}\; \backslash sim\; 5.73\; \backslash times\; 10^.$ It is thought this angle is the smallest angle between the world lines of free photons, which may interact with electrons or pass through the QED vacuum. == References == 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「Planck angle」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.