In October 1859, German physicist Gustav Kirchhoff announced the results of his investigations with chemist Robert Bunsen on the dark lines that interrupt the otherwise continuous solar spectrum.
Title: In October 1859, German physicist Gustav Kirchhoff announced the results of his investigations with chemist Robert Bunsen on the dark lines that interrupt the otherwise continuous solar spectrum.
Category: Science & Technology / Chemistry | Words: 2063 | Pages: 8.8 (approximately 235 words/page)
In October 1859, German physicist Gustav Kirchhoff announced the results of his investigations with chemist Robert Bunsen on the dark lines that interrupt the otherwise continuous solar spectrum.
In October 1859, German physicist Gustav Kirchhoff announced the results of his investigations with chemist Robert Bunsen on the dark lines that interrupt the otherwise continuous solar spectrum (1). These lines had puzzled practitioners and theorists alike since they were first observed in 1814 by German optician Josef von Fraunhofer (2).
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Sir William Huggins
(1824-1910)
CREDIT: CORBIS
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Now it seemed that Bunsen and Kirchhoff had finally confirmed what others had long suspected, namely, that an individual metal produces its own …
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showed last 75 words of 2063 total…Sci. 7, 101-113 and 251-252 (1827); 8, 7-10 (1828).
H. E. Roscoe to G. G. Stokes, 24 February 1860, from Stokes papers, Add. MS 7656.R788, Cambridge University Library.
W. De la Rue, Chem. News 4, 130 (1861).
A. Comte, Cours de Philosophie Positive, vol. 2 (Baillière, Paris, ed. 2, 1864) p. 6, translation by the author.
A. Clerke, A Popular History of Astronomy During the Nineteenth Century (Macmillan, New York, ed. 2, 1887), p. 180.
W. Huggins, Nineteenth Century 41, 907 (1897).
H. Schellen, Spectrum Analysis in Its Application to Terrestrial Substances (Longmans Green, London, 1872), p. 466.
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