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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 40, Iss. 6 — Jun. 1, 1950
  • pp: 401–401

Spectrophotometry in the Presence of Stray Radiation: A Table of Log[(100 - k)/(T - k)]

ASCHER OFLER  »View Author Affiliations


JOSA, Vol. 40, Issue 6, pp. 401-401 (1950)
http://dx.doi.org/10.1364/JOSA.40.000401


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Abstract

When spectrophotometry is conducted in the presence of unavoidable stray radiation, the usual expression for the absorbance [A =log(100/T)] becomes log[(100-k)/(T-k)], where T is the percent transmittance (100I/I0) and k is the percent stray radiation. To meet the demands of routine infra-red spectrophotometry in the 15–22µ-region, a table of values of this function was prepared for 1<T<99 and 0.5<k<20. The calculation of these values was performed by punched card machines.

Citation
ASCHER OFLER, "Spectrophotometry in the Presence of Stray Radiation: A Table of Log[(100 - k)/(T - k)]," J. Opt. Soc. Am. 40, 401-401 (1950)
http://www.opticsinfobase.org/josa/abstract.cfm?URI=josa-40-6-401

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