Abstract

A simple filtering system, involving the use of only two simply constructed selenium powder filters, is described, by the use of which it is possible to obtain a pure energy spectrum with a wire grating spectrometer in the region 40–130μ. In addition transmission curves are given for a number of substances in the regions 1–15μ and 35–130μ.

© 1936 Optical Society of America

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Figures (12)

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