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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 11, Iss. 5 — Nov. 1, 1925
  • pp: 473–478

Optics InfoBase > JOSA > Volume 11 > Issue 5 > SPECTRAL CENTROID RELATIONS FOR ARTIFICIAL DAYLIGHT FILTERS

SPECTRAL CENTROID RELATIONS FOR ARTIFICIAL DAYLIGHT FILTERS

K. S. GIBSON

JOSA, Vol. 11, Issue 5, pp. 473-478 (1925)
http://dx.doi.org/10.1364/JOSA.11.000473


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K. S. GIBSON, "SPECTRAL CENTROID RELATIONS FOR ARTIFICIAL DAYLIGHT FILTERS," J. Opt. Soc. Am. 11, 473-478 (1925)
http://www.opticsinfobase.org/josa/abstract.cfm?URI=josa-11-5-473


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References

  1. Proceedings, J.O.S.A. & R.S.I., 10, p. 292; Mar. 1925.
  2. By spectral centroid, λc, is meant the wave length center of gravity of the luminosity curve: viz., [equation] where Vλ≡relative visibility, Eλ≡relative energy distribution of light source, Tλ≡spectral transmission of glass, λ ≡wave length.
  3. No. 40871, July, 1924.
  4. Measurements were made on the rotatory dispersion colorimetric photometer designed by Priest: J.O.S.A. & R.S.I., 7, pp. 1175–1209, Dec. 1923.
  5. No. 33652, 1st Supplement, July, 1922. Data by Dr. M. K. Frehafer.
  6. Loc. cit., Tables 1 to 4.
  7. The magnitude of the variation of λc with visibility in the case of the visibility curve and the luminosity curve at 2077°K may be noted by reference to Table 3, p. 175, of Bureau of Standards Scientific Paper No. 475, "The Visibility of Radiant Energy," K. S. Gibson and E. P. T. Tyndall.

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