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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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References

  1. Hawes, Cary, Beckman, Madsen, Hare, and Stickney, "A direct transmittancy recording infrared spectrophotometer," presented before the Symposium on Molecular Structure and Spectroscopy, June 17, 1949, at Columbus, Ohio.
  2. E. K. Plyler, J. Opt. Soc. Am. 37, 746 (1947).
  3. Brattain, Rassmussen, and Cravath, J. App. Phys. 14, 418 (1943).
  4. Fry, Nusbaum, and Randall, J. App. Phys. 17, 158 (1946).
  5. J. R. Nielsen and Don C. Smith, Ind. Eng. Chem. Anal. Ed. 15, 609 (1943)

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