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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 Rayleigh distance ： ウィキペディア英語版 Rayleigh distance Rayleigh distance in optics is the axial distance from a radiating aperture to a point at which the path difference between the axial ray and an edge ray is λ / 4. A good approximation of the Rayleigh Distance is $Z\; =\; \backslash frac$, in which Z is the Rayleigh distance, D is the aperture of radiation, λ the wavelength. Actually, Rayleigh distance is also a distance beyond which the distribution of the diffracted light energy no longer changes according to the distance Z from the aperture. It is the reduced Fraunhofer diffraction limitation. In electronics, a distance equal to four Rayleigh distances is used to denote the distance at which the beam radiated by a reflector antenna is fully formed. Lord Rayleigh's paper on the subject was published in 1891.〔(On Pinhole Photography )〕 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「Rayleigh distance」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.