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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 Bohr radius ： ウィキペディア英語版 Bohr radius The Bohr radius (''a''0) is a physical constant, approximately equal to the most probable distance between the proton and electron in a hydrogen atom in its ground state. It is named after Niels Bohr, due to its role in the Bohr model of an atom. Its value is 5.2917721092(17) m〔〔 == Definition & value == In SI units the Bohr radius is:〔David J. Griffiths, ''Introduction to Quantum Mechanics'', Prentice-Hall, 1995, p. 137. ISBN 0-13-124405-1〕 :$a\_0\; =\; \backslash frac\; =\; \backslash frac$ where: :$a\_0$ is the Bohr radius, :$\backslash varepsilon\_0\; \backslash$ is the permittivity of free space, :$\backslash hbar\; \backslash$ is the reduced Planck's constant, :$m\_$ According to 2010 CODATA the Bohr radius has a value of 5.2917721092(17) m (i.e., approximately 53 pm or 0.53 angstroms).〔The number in parenthesis (17) denotes the uncertainty of the last digits.〕 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「Bohr radius」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.