Abstract

The Respectra is a calculating board for preparing photographic emulsion calibrations and for performing the mathematical steps involved in both simple and complex spectrographic determinations. This paper describes the transformation of emulsion calibrations into straight lines through the use of Kaiser's modification of the Seidel function.

Application of a Calculating Board to Quantitative Spectro-Analysis*

Carl King
J. Opt. Soc. Am. 32(2) 112-115 (1942)

Emulsion Calibration Scale for Quantitative Spectroscopic Analysis

Harold K. Hughes and R. W. Murphy
J. Opt. Soc. Am. 39(6) 501-504 (1949)

A New Line Board Test for Paraboloidal Reflectors

William Liben and Benjamin Goldberg
J. Opt. Soc. Am. 43(5) 347-352 (1953)

A Possible Extension of the Density-Difference Method of Spectrographic Analysis

B. Verkerk
J. Opt. Soc. Am. 41(12) 1017-1022 (1951)

Photographic Sequence Exposure Experiment*

J. H. Enns and E. Katz
J. Opt. Soc. Am. 47(8) 758-764 (1957)