1 December 1939, Volume 29, Issue 12, pp. 503-544  
8 articles

Floyd K. Richtmyer1881–1939

J. Opt. Soc. Am. 29(12), 503-505 (1939)  View: HTML | PDF

The Limiting Sensitivity of the Alternating-Current Method of Photo-Cell-Current Amplification

J. Opt. Soc. Am. 29(12), 506-511 (1939)  View: HTML | PDF

The Measurement of Light Scattered by the Upper Atmosphere from a Search-Light Beam

J. Opt. Soc. Am. 29(12), 512-517 (1939)  View: HTML | PDF

The Visibility of a Thin Wire

J. Opt. Soc. Am. 29(12), 519-519 (1939)  View: HTML | PDF

A New Radiation Pyrometer

J. Opt. Soc. Am. 29(12), 520-530 (1939)  View: HTML | PDF

The Koremetron: An Instrument for Measuring Pupillary Diameters

J. Opt. Soc. Am. 29(12), 531-534 (1939)  View: HTML | PDF