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The dispersion phenomena of Albite from Alp Rischuna, Switzerland

Published online by Cambridge University Press:  14 March 2018

S. Kôzu
S. Kôzu*
Affiliation:
Tôhoku Imperial University, Sendai, Japan
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Extract

The refractive indices of this mineral for different wave-lengths were determined by the Abbé-Pulfrich total-reflectometer. The dispersion of the glass hemisphere of the instrument was determined by the aid of a highly polished glass prism, the dispersion of the latter being found by the method of minimum deviation. In order to obtain light of definite wave-length Hilger's wave-length spectrometer was used with a Nernst lamp or an electric arc as the source of illumination.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 17 , Issue 81 , September 1915 , pp. 189 - 192
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1915

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