Abstract

Experiments have been carried out in the far infra-red region from 100 to 600 microns using a grating spectrograph with crystal quartz optics. These experiments include measurement of the transmission of the atmosphere for paths up to 8 meters, the measurement of the transmission of various solid substances, and the observation of the longest wave-length pure rotation lines in the spectra of ammonia and hydrogen chloride.

© 1950 Optical Society of America

Infra-Red Microspectroscopy*

Elkan R. Blout, George R. Bird, and David S. Grey
J. Opt. Soc. Am. 40(5) 304-313 (1950)

Measurement of Thickness of Infra-Red Absorption Cells

Joseph H. Jaffe and Halina Jaffe
J. Opt. Soc. Am. 40(1) 53-54 (1950)

A Variable Thickness Low Temperature Infra-Red CeH*,†

Robert B. Holden, William J. Taylor, and Herrick L. Johnston
J. Opt. Soc. Am. 40(11) 757-760 (1950)

Performance of a Double-Beam Recording Infra-Red Spectrophotometer

John U. White and Max D. Liston
J. Opt. Soc. Am. 40(2) 93-101 (1950)

Construction of a Double Beam Recording Infra-Red Spectrophotometer

John U. White and Max D. Liston
J. Opt. Soc. Am. 40(1) 29-35 (1950)