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A diagram for use with the total-reflectometer

Published online by Cambridge University Press:  14 March 2018

A. Hutchinson
A. Hutchinson*
Affiliation:
University of Cambridge
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Extract

The accompanying diagram (Plate VIII) has been prepared in order to facilitate the determination of indices of refraction with the Kohlrausch total-reflectometer, by affording a means of rapidly werking out the results by a graphical method.

The Kohlrausch instrument enables measurements to be made of the critical angle θ, at which total reflection begins, when monochromatic light is reflected at the plane surface of a solid of refractive index μ immersed in a liquid of higher refractive index μ′.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 16 , Issue 75 , May 1912 , pp. 236 - 238
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1912

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References

Page 236 note 1 Compare Hutchinson, A., ‘A univerlal goniometer,’ Mineralogical Magazine, 1911, vol. xvi, pp. 100–108 CrossRefGoogle Scholar.

Page 237 note 1 The possibility of preparing liquids of higher refractive index than 1.83 hu recently been indicated by F. E. Wright, –The methods of petrographic-micro. acopic research— (Carnegie Institution of Washington, Publication No. 158), 1911, p. 98.