1 July 1949, Volume 39, Issue 7, pp. 507-640  
28 articles

Image Contrast in Phase-Contrast Microscopy

J. Opt. Soc. Am. 39(7), 507-514 (1949)  View: HTML | PDF

A Photoelectric Method of Measuring the Atmospheric Attenuation of Brightness Contrast Along a Horizontal Path for the Visible Region of the Spectrum

J. Opt. Soc. Am. 39(7), 515-521 (1949)  View: HTML | PDF

The Production of Diffraction Gratings: II. The Design of Echelle Gratings and Spectrographs1

J. Opt. Soc. Am. 39(7), 522-528 (1949)  View: HTML | PDF

Book Review

J. Opt. Soc. Am. 39(7), 528-528 (1949)  View: HTML | PDF

The Image Orthicon in Spectroscopy

J. Opt. Soc. Am. 39(7), 529-532 (1949)  View: HTML | PDF

Recording Interferometer for Precision Wave-Length Determinations

J. Opt. Soc. Am. 39(7), 544-546 (1949)  View: HTML | PDF

Interference Phenomenon in the Schlieren System

J. Opt. Soc. Am. 39(7), 546-550 (1949)  View: HTML | PDF

Optical Characteristics of Sheets of Scattering Materials

J. Opt. Soc. Am. 39(7), 551-553 (1949)  View: HTML | PDF

The Resolving Power of a Coated Objective

J. Opt. Soc. Am. 39(7), 553-557 (1949)  View: HTML | PDF

The Resolution of Two Particles in a Bright Field by Coated Microscope Objectives

J. Opt. Soc. Am. 39(7), 558-566 (1949)  View: HTML | PDF

Some Variables Influencing Vernier AcuityI. Illumination and Exposure TimeII. Wave-Length of Illumination

J. Opt. Soc. Am. 39(7), 567-576 (1949)  View: HTML | PDF

The Apparent Colors of Surfaces of Small Subtense—A Preliminary Report

J. Opt. Soc. Am. 39(7), 582-592 (1949)  View: HTML | PDF

The Ridgway Color Standards with a Munsell Notation Key

J. Opt. Soc. Am. 39(7), 592-599 (1949)  View: HTML | PDF

Index of Refraction and Coefficients of Expansion of Optical Glasses at Low Temperatures

J. Opt. Soc. Am. 39(7), 600-611 (1949)  View: HTML | PDF

Some Notes on the Designing of Aspherical Magnifiers for Binocular Vision

J. Opt. Soc. Am. 39(7), 612-613 (1949)  View: HTML | PDF

Infra-Red Interference Filter Used in Calibration

J. Opt. Soc. Am. 39(7), 613_1-614 (1949)  View: HTML | PDF

Further Remarks on the Stiles-Crawford Effect

J. Opt. Soc. Am. 39(7), 614-614 (1949)  View: HTML | PDF

Annual Report of the Editor of Publications

J. Opt. Soc. Am. 39(7), 615_1-616 (1949)  View: PDF

Annual Report of the Treasurer of the Optical Society of America

J. Opt. Soc. Am. 39(7), 619-620 (1949)  View: PDF

By-Laws of the Optical Society of America, Inc.

J. Opt. Soc. Am. 39(7), 621-625 (1949)  View: PDF

Proceedings of the Winter Meeting of the Optical Society of America

J. Opt. Soc. Am. 39(7), 626-626 (1949)  View: PDF