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VII.—The Absorption of Light by Inorganic Salts. No. V.: Copper and the Alkali Metals

Published online by Cambridge University Press:  15 September 2014

R. A. Houstoun
R. A. Houstoun
Affiliation:
University of Glasgow
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Extract

The research described in this article was undertaken with the double purpose of testing new apparatus and of making a rapid survey of the absorption of light by salts of the first periodic group.

The results described in the previous articles were obtained by three separate methods, viz. the thermopile in the infra-red, the spectrophotometer in the visible spectrum, and the photographic spectrophotometer in the ultra-violet. It would be a great simplification if the same apparatus could be used throughout the whole spectrum, and I therefore first of all devoted my attention to seeing if this were practicable.

Type
Proceedings
Information
Proceedings of the Royal Society of Edinburgh , Volume 32 , 1913 , pp. 40 - 49
Copyright
Copyright © Royal Society of Edinburgh 1913

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References

page no 40 note * Knowledge, vol. viii. p. 87; Studies in Light Production, The Electrician Publishing Co. (in preparation).

page no 43 note * Proc. Roy. Soc. Edin., xxxi. p. 550 (1911).

page no 45 note * The results for the ultra-violet given in the paper are probably right to about 7 per cent. In the near ultra-violet, where a Nernst filament can be used instead of the iron arc, an accuracy of 1 or 2 per cent. can be attained.

page no 45 note † “Metallic Arcs for Spectroscopic Investigations,” Pfund, A. H., A stroph. Jr., xxvii. 1908, p. 296.Google Scholar

page no 45 note ‡ “On the Absolute Measurement of Light: A Proposal for an Ultimate Light Standard,” Houstoun, R. A., Proc. Roy. Soc., 85 A, p. 275 (1911).CrossRefGoogle Scholar

page no 47 note * Phil. Mag. (5), xxxiii, p. 317 (1892); Proc. Roy. Soc., lvi. p. 286 (1894); Proc. Roy. Soc., lvii. p. 117 (1894).

page no 47 note † Inaug. Diss., Berlin, 1902.

page no 47 note ‡ Ann. d. Phys. (4), xii. p. 767 (1903); Proc. Roy. Soc.. (4), xxi. p. 515 (1906).