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Bestimmung der Absorption des rothen Lichts in farbigen Flüssigkeiten.
(Leipzig, Johann Ambrosius Barth, 1852). Without wrappers as issued in ""Annalen der Physik und Chemie. Hrsg. von J.C. Poggendorff"", 86. Bd., 1. issue (""Heft"" No 5, 1852). Entire issue offered. Pp. 1-160 a. 1 engraved plate. Beer's paper: pp.. 78-90. Clean and fine.
First appearance of this importent law in is modern form. It is widely used in meteorology, in chemical analysis an, in meauring radiation etc.The law was discovered by Pierre Bouguer before 1729. It is often mis-attributed to Johann Heinrich Lambert, who cited Bouguer's Essai d'Optique sur la Gradation de la Lumiere (Claude Jombert, Paris, 1729) , and even quoted from it in his Photometria in 1760. Much later, August Beer extended the exponential absorption law. (1852).The issue offered also contains Plücker's large memoir on Diamagnetismus ""Ueber die Theorie des Diamagnetismus, die Erklärung des ueberganges magnetischen Verhaltens in diamagnetidches und mathematisches Begründung der bei Krystallen beobachteten Erscheinungen"". Pp. 1-34.The law is used widely in infra-red spectroscopy for analysis of polymer degradation and oxidation. The carbonyl group absorption at about 6 micrometres can be detected quite easily, and degree of oxidation of the polymer calculated.
