1 February 1940, Volume 30, Issue 2, pp. 41-92  
6 articles

Editorial

J. Opt. Soc. Am. 30(2), 41-41 (1940)  View: HTML | PDF

Comparative Anatomical Studies of the Eye with Especial Reference to the Photoreceptors

J. Opt. Soc. Am. 30(2), 42-50 (1940)  View: HTML | PDF

Spectral Luminosity Factors

J. Opt. Soc. Am. 30(2), 51-61 (1940)  View: HTML | PDF

Supra-Threshold Visibility

J. Opt. Soc. Am. 30(2), 62-69 (1940)  View: HTML | PDF

Tables of Planck’s Radiation and Photon Functions

J. Opt. Soc. Am. 30(2), 70-81 (1940)  View: HTML | PDF