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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 32, Iss. 3 — Mar. 1, 1942
  • pp: 160–162

Curve Shape Index for Identification by Means of Spectrophotometric Curves

WM. A. SHURCLIFF  »View Author Affiliations

JOSA, Vol. 32, Issue 3, pp. 160-162 (1942)

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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.

WM. A. SHURCLIFF, "Curve Shape Index for Identification by Means of Spectrophotometric Curves," J. Opt. Soc. Am. 32, 160-162 (1942)

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  1. W. C. Holmes, J. T. Scanlan and A. R. Peterson, "The visual spectrophotometry of dyes," Dept. Agriculture Tech. Bull. 310 (June, 1932).
  2. I. H. Godlove, paper in the Intersociety Color Council News Letter 26 (December, 1939).
  3. W. P. Davey, J. App. Phys. 10, 820–830 (1939).
  4. Construction of cams providing log log 1/T plots is described in U. S. Patent 2,176,013.
  5. E. Zühlke, Analyze von Färbungen (Janecke).

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