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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 Beer–Lambert law ： ウィキペディア英語版 Beer–Lambert law The Beer–Lambert law, also known as Beer's law, the Lambert–Beer law, or the Beer–Lambert–Bouguer law relates the attenuation of light to the properties of the material through which the light is traveling. The law is commonly applied to chemical analysis measurements and used in understanding attenuation in physical optics, for photons, neutrons or rarefied gases. In mathematical physics, this law arises as a solution of the BGK equation. == History == The law was discovered by Pierre Bouguer before 1729.〔Pierre Bouguer, (''Essai d'optique sur la gradation de la lumière'' ) (Paris, France: Claude Jombert, 1729) pp. 16–22.〕 It is often attributed to Johann Heinrich Lambert, who cited Bouguer's ''Essai d'optique sur la gradation de la lumière'' (Claude Jombert, Paris, 1729)—and even quoted from it—in his ''Photometria'' in 1760.〔J.H. Lambert, (''Photometria sive de mensura et gradibus luminis, colorum et umbrae'' ) (or, On the measure and gradations of light, colors, and shade ) (Augsburg ("Augusta Vindelicorum"), Germany: Eberhardt Klett, 1760). See especially (p. 391 ).〕 Lambert's law stated that absorbance of a material sample is directly proportional to its thickness (path length). Much later, August Beer discovered another attenuation relation in 1852. Beer's law stated that absorbance is proportional to the concentrations of the attenuating species in the material sample in 1852.〔Beer (1852) ("Bestimmung der Absorption des rothen Lichts in farbigen Flüssigkeiten" ) (Determination of the absorption of red light in colored liquids), ''Annalen der Physik und Chemie'', vol. 86, pp. 78–88.〕 The modern derivation of the Beer–Lambert law combines the two laws and correlates the absorbance to both the concentrations of the attenuating species as well as the thickness of the material sample. 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「Beer–Lambert law」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.