1 December 1931, Volume 21, Issue 12, pp. 753-804  
4 articles

Photographic Plates for Use in Spectroscopy and Astronomy

J. Opt. Soc. Am. 21(12), 753-775 (1931)  View: HTML | PDF

The Measurement of Reflection-Factors in the Ultraviolet

J. Opt. Soc. Am. 21(12), 776-784 (1931)  View: HTML | PDF

Laminary Reflection Gratings For Infrared Investigation

J. Opt. Soc. Am. 21(12), 785-791 (1931)  View: HTML | PDF

On the Spectra of Gases Appearing in the Early Stages of the Spark

J. Opt. Soc. Am. 21(12), 792-799 (1931)  View: HTML | PDF