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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 Rydberg constant ： ウィキペディア英語版 Rydberg constant The Rydberg constant, symbol ''R''∞ for heavy atoms or ''R''H for hydrogen, named after the Swedish physicist Johannes Rydberg, is a physical constant relating to atomic spectra, in the science of spectroscopy. The constant first arose as an empirical fitting parameter in the Rydberg formula for the hydrogen spectral series, but Niels Bohr later showed that its value could be calculated from more fundamental constants, explaining the relationship via his "Bohr model". As of 2012, ''R''∞ and electron spin g-factor are the most accurately measured fundamental physical constants. The Rydberg constant represents the limiting value of the highest wavenumber (the inverse wavelength) of any photon that can be emitted from the hydrogen atom, or, alternatively, the wavenumber of the lowest-energy photon capable of ionizing the hydrogen atom from its ground state. The spectrum of hydrogen can be expressed simply in terms of the Rydberg constant, using the Rydberg formula. The Rydberg unit of energy, symbol Ry, is closely related to the Rydberg constant. It corresponds to the energy of the photon whose wavenumber is the Rydberg constant, i.e. the ionization energy of the hydrogen atom. ==Value of the Rydberg constant and Rydberg unit of energy== According to the 2010 CODATA, the constant is: :$R\_\backslash infty\; =\; \backslash frac\; =\; 1.097\backslash ;373\backslash ;156\backslash ;8539(55)\; \backslash times\; 10^7\; \backslash ,\backslash text^,$〔 where $m\_\backslash text$ is the rest mass of the electron, $e$ is the elementary charge, $\backslash varepsilon\_0$ is the permittivity of free space, $h$ is the Planck constant, and $c$ is the speed of light in a vacuum. This constant is often used in atomic physics in the form of the Rydberg unit of energy: :$1\; \backslash \; \backslash text\; \backslash equiv\; h\; c\; R\_\backslash infty\; =\; 13.605\backslash ;692\backslash ;53(30)\; \backslash ,\backslash text.$〔 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「Rydberg constant」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.