1 April 1949, Volume 39, Issue 4, pp. 265-326  
15 articles

The Correction of Slit-Width Errors

J. Opt. Soc. Am. 39(4), 265-270 (1949)  View: HTML | PDF

A Preliminary Investigation of the Spectra of Uranium Isotopes

J. Opt. Soc. Am. 39(4), 271-274 (1949)  View: HTML | PDF

The Determination of Flame Temperatures by Infra-Red Radiation

J. Opt. Soc. Am. 39(4), 275-277 (1949)  View: HTML | PDF

Physics Abstracts

J. Opt. Soc. Am. 39(4), 277-277 (1949)  View: PDF

A Provisional Standard Observer for Low Level Photometry

J. Opt. Soc. Am. 39(4), 278-291 (1949)  View: HTML | PDF

A Rapid Mobile Analyzer for Minute Amounts of Lead in Air

J. Opt. Soc. Am. 39(4), 292-293 (1949)  View: HTML | PDF

Detection of Lead in Air with the Aid of a Geiger-Müller Counter

J. Opt. Soc. Am. 39(4), 294-297 (1949)  View: HTML | PDF

Book Review

J. Opt. Soc. Am. 39(4), 297-297 (1949)  View: HTML | PDF

An Air Interrupter Type Spectrographic Light Source

J. Opt. Soc. Am. 39(4), 298-304 (1949)  View: HTML | PDF

The General Theory of Isoplanatism for Finite Aperture and Field

J. Opt. Soc. Am. 39(4), 305-319 (1949)  View: HTML | PDF

Resolving Power Limitations of Grating and Prism Spectrometers

J. Opt. Soc. Am. 39(4), 320-323 (1949)  View: HTML | PDF

Retina Cones as Dielectric Antennas

J. Opt. Soc. Am. 39(4), 324-324 (1949)  View: HTML | PDF

Comment on the Note Entitled “Retinal Cones as Dielectric Antennas”

J. Opt. Soc. Am. 39(4), 324_1-324 (1949)  View: HTML | PDF

In Memoriam

J. Opt. Soc. Am. 39(4), 325-326 (1949)  View: HTML | PDF

Optical Society of America, IncorporatedNotice of Election of Officers

J. Opt. Soc. Am. 39(4), 326-326 (1949)  View: PDF