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

Transmissions of Powder Films to the Infrared Spectrum

Jesse H. Plummer
J. Opt. Soc. Am. 26(12) 434-438 (1936)

The Electric Welsbach Lamp

A. H. Pfund
J. Opt. Soc. Am. 26(12) 439-442 (1936)

The Calculation of Filters for Color Temperature Conversion

K. S. Weaver
J. Opt. Soc. Am. 26(9) 339-342 (1936)

The Selection of Color Temperature Altering Filters

Roger S. Estey
J. Opt. Soc. Am. 26(7) 293-297 (1936)

The Hydrogen Effect in Certain Oxides

E. L. Nichols and C. L. Stanford
J. Opt. Soc. Am. 26(2) 91-98 (1936)