Abstract

A simplified curve-shape indexing system for spectrophotometric absorption curves is described by means of which the tentative identification of an “unknown” (whose curve is already at hand) may ordinarily be made in 2 or 3 minutes even in the presence of small amounts of colored impurities. Quantitative solutions are not required.

© 1942 Optical Society of America

Phototropic Dyes

E. I. Stearns
J. Opt. Soc. Am. 32(5) 282-284 (1942)

Visual Sensitivities to Color Differences in Daylight*

David L. MacAdam
J. Opt. Soc. Am. 32(5) 247-274 (1942)

Photoelectric Tristimulus Colorimetry with Three Filters*

Richard S. Hunter
J. Opt. Soc. Am. 32(9) 509-538 (1942)

Reflection-Transmission Relationships in Sheet Materials

Herbert F. Launer
J. Opt. Soc. Am. 32(2) 84-93 (1942)

The Control of Photographic Printing by Measured Characteristics of the Negative*

Loyd A. Jones and C. N. Nelson
J. Opt. Soc. Am. 32(10) 558-619 (1942)