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The photoelectric measurement of reflectivity

Published online by Cambridge University Press:  14 March 2018

S. H. U. Bowie
S. H. U. Bowie*
Affiliation:
Atomic Energy Division, Geological Survey of Great Britain.
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Summary

A simple photoelectric-cell attachment for use with an ordinary oremicroscope is described. Stabilization of the light source and accurate calibration of the photometer enable reflectivity values to be determined within an accuracy of 1% of the measured value. The choice of a universally acceptable standard is discussed. The photometer can be used with white light or with light of different wave-lengths. Bireflection, dispersion, and dispersion of the bireflection can readily be measured.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 31 , Issue 237 , June 1957 , pp. 476 - 486
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1957

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References

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