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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Jesse H. Plummer
J. Opt. Soc. Am. 26(12) 434-438 (1936)
A. H. Pfund
J. Opt. Soc. Am. 26(12) 439-442 (1936)
K. S. Weaver
J. Opt. Soc. Am. 26(9) 339-342 (1936)