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On Certain Formulae connected with the Function (cosnα – cosnθ)/(cosα – cosθ)

Published online by Cambridge University Press:  20 January 2009

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§ 1. This paper deals with certain formulae which, though probably not all new, have not appeared in the text-books. They were suggested to the writer while engaged in discussing the expression for the intensity of the transmitted beam in the Lummer Gehrcke Interference Spectroscope, viz.

Type
Research Article
Copyright
Copyright © Edinburgh Mathematical Society 1913

References

* See DrGehrcke, E., Die Anwendung der Interferenzen in der Spectroslcopie und Metrologie, (Braunschweig, 1906), p. 69.Google Scholar I have modified the notation. The subject wag brought to my notice by Prof. A. L. Selby.

n=15, p=883 are the actual values in a typical ease.