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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 15, Iss. 2 — Mar. 1, 1927
  • pp: 82–84

Optics InfoBase > JOSA > Volume 15 > Issue 2 > CORRECTION OF A PREVALENT ERROR IN REGARD TO THE DATA ON PHOTOMETRIC SENSIBILITY AS A FUNCTION OF WAVE LENGTH AT LOW BRIGHTNESS

CORRECTION OF A PREVALENT ERROR IN REGARD TO THE DATA ON PHOTOMETRIC SENSIBILITY AS A FUNCTION OF WAVE LENGTH AT LOW BRIGHTNESS

IRwIN G. PRIEST

JOSA, Vol. 15, Issue 2, pp. 82-84 (1927)
http://dx.doi.org/10.1364/JOSA.15.000082


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IRwIN G. PRIEST, "CORRECTION OF A PREVALENT ERROR IN REGARD TO THE DATA ON PHOTOMETRIC SENSIBILITY AS A FUNCTION OF WAVE LENGTH AT LOW BRIGHTNESS," J. Opt. Soc. Am. 15, 82-84 (1927)
http://www.opticsinfobase.org/josa/abstract.cfm?URI=josa-15-2-82


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References

  1. W. Peddie, "Colour Vision," London, page 45; 1922.
  2. J. H. Parsons, "Introduction to the Study of Colour Vision," Second Edition, Cambridge, pp. 23–24; 1924. At another place in the same book (Fig. 20, p. 51), Parsons, following Nutting, gives the correct representation of the same data without noting the contradiction.
  3. W. Peddie, "The Mathematics of Colour Vision—," Trans. Optical Convention, p. 227; 1926.
  4. J.O.S.A. & R.S.I., 7, p. 1254; Dec. 1923.
  5. "Experimentelle Untersuchungen ber die psycho-physische Fundamentalformel in Bezug auf den Gesichtssinn." Sitzungsber. der Akad. der Wissensch., Berlin, pp. 917–931; July 26, 1888. Also in Koenig's "Gesam. Abhand. zur Physiol. Optik," pp. 116–134; Leipzig 1903.
  6. Sitzungsber. der Akad. der Wissensch., p. 925; Berlin, July 26, 1888.
  7. The following is quoted from the text describing this figure and immediately following it in the original paper: In der vorstehenden Fig. 1 sind als Abscissen die Werthe von γ im Maassstabe ihrer Logarithmen, hingegen die Werthe des Quotienten ∂γ:γ selbst als Ordinaten schematisch eingetragen. Der Curvenzweig I entspricht den hier besprochenen hohen Intensitäten. Zwischen den Intensitäten 2000 und 20000 läuft die Curve horizontal d. h. ∂γ:γ hat einen constanten Werth. Nach beiden Seiten hin findet dann eine Zunahme statt. Hinsichtlich der niedrigeren Intensitäten zerfallen die sechs untersuchten Spectralregionen in zwei Gruppen, deren eine die Wellenlängen 670µµ, 605µµ und 575µµ, die andere die Wellenlängen 505µµ, 470µµ und 430µµ enthält. Die Werthe von ∂γ:γ sind für die erste Gruppe in dem Curvenzweig II, für die zweite in dem Curvenzweig III eingetragen. Die Curven steigen ständig mit abnehmendem Werthe von J (bez. γ) und zwar ist die Zunahme von ∂γ:γ bei der ersten Gruppe (II) viel stärker als bei der zweiten Gruppe (III).
  8. I find that it is corrected in pencil in the Bureau of Standards Library copy of Helmholtz. This correction was probably made by Nutting who was studying the subject at the Bureau in 1906. Cf. Nutting, "Complete Form of Fechner's Law," Bull. of Bur. of Stands. 3, pp. 59–64; 1907; and "Outlines of Applied Optics," pp. 124–126.
  9. New experimental data on photometric sensibility for red and blue taken under my direction at the Bureau of Standards by F. K. Harris, (unpublished data taken in 1924) are in accord with the original statement of Koenig and Brodhun.

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