Abstract

An investigation of the colors in the Munsell 5<i>R</i> plane and an extension of this study to colors produced in a small aperture in a large white illuminated surround have led to the discovery of some interesting and novel relationships. It is found that under these conditions the domain of surface color perception includes the whole of the range from <i>V</i>=0 to 10 and <i>p</i><sub><i>c</i></sub>= 0 to 1.0 and under some conditions more. For a color of a given dominant wavelength there is a locus lying wholly within this space along which lie colors that do not appear to contain gray. If luminance or purity is increased above a point on this line, the sample takes on the appearance characteristic of a fluorescent material. If either is decreased below a point on this line, the color is perceived as having a gray component added to the purely chromatic component in increasing amounts until at <i>p</i><sub><i>c</i></sub>=0, there is no chromatic component perception of the color or at low values of <i>V</i> the sample appears black. Above a point somewhat higher than surround luminance, the appearance of fluorescence ceases and the surface mode changes to the illuminant mode, the saturation of the perceived color decreasing with increasing luminance above this point. An hypothesis is suggested to explain the facts and it is pointed out that more than one <i>kind</i> of "brightness" is necessarily involved.

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References

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  1. Shorter Oxford English Dictionary of Historical Principles, edited by J. A. H. Murray (Oxford University Press, New York, 1933).
  2. Deane B. Judd, Color in Business, Science and Industry (John Wiley & Sons, Inc., New York, 1952). On page 154 it is stated that more than 60% of the TCCA color standards fluoresce detectably. Almost none of them appears to.
  3. W. E. K. Middleton and C. L. Sanders, Illum. Eng. Soc. (N. Y.) 48, 254–256 (1953).
  4. Newhall, Burnham, and Evans, J. Opt. Soc. Am. 48, 976–984 (1958). Figure 2 is taken from this article.
  5. Deane B. Judd, J. Research Natl. Bur. Standards 24, 293–333 (1940).
  6. Ralph M. Evans, J. Opt. Soc. Am. 39, 774–779 (1949).
  7. D. L. MacAdam, J. Opt. Soc. Am. 25, 361 (1935).
  8. Burnham, Evans, and Newhall, J. Opt. Soc. Am. 42, 597–605 (1952).
  9. D. L. MacAdams, J. Opt. Soc. Am. 40, 589–595 (1950).
  10. C. L. Sanders and G. Wyszecki, J. Opt. Soc. Am. 47, 398–404 (1957). G. Wyszecki and C. L. Sanders, ibid. 47, 840–842 (1957).
  11. E. J. Breneman, J. Opt. Soc. Am. 48, 228–232 (1958).

Breneman, E. J.

E. J. Breneman, J. Opt. Soc. Am. 48, 228–232 (1958).

Evans, Ralph M.

Ralph M. Evans, J. Opt. Soc. Am. 39, 774–779 (1949).

Judd, Deane B.

Deane B. Judd, Color in Business, Science and Industry (John Wiley & Sons, Inc., New York, 1952). On page 154 it is stated that more than 60% of the TCCA color standards fluoresce detectably. Almost none of them appears to.

Deane B. Judd, J. Research Natl. Bur. Standards 24, 293–333 (1940).

MacAdam, D. L.

D. L. MacAdam, J. Opt. Soc. Am. 25, 361 (1935).

MacAdams, D. L.

D. L. MacAdams, J. Opt. Soc. Am. 40, 589–595 (1950).

Middleton, W. E. K.

W. E. K. Middleton and C. L. Sanders, Illum. Eng. Soc. (N. Y.) 48, 254–256 (1953).

Murray, J. A. H.

Shorter Oxford English Dictionary of Historical Principles, edited by J. A. H. Murray (Oxford University Press, New York, 1933).

Sanders, C. L.

W. E. K. Middleton and C. L. Sanders, Illum. Eng. Soc. (N. Y.) 48, 254–256 (1953).

C. L. Sanders and G. Wyszecki, J. Opt. Soc. Am. 47, 398–404 (1957). G. Wyszecki and C. L. Sanders, ibid. 47, 840–842 (1957).

Wyszecki, G.

C. L. Sanders and G. Wyszecki, J. Opt. Soc. Am. 47, 398–404 (1957). G. Wyszecki and C. L. Sanders, ibid. 47, 840–842 (1957).

Other (11)

Shorter Oxford English Dictionary of Historical Principles, edited by J. A. H. Murray (Oxford University Press, New York, 1933).

Deane B. Judd, Color in Business, Science and Industry (John Wiley & Sons, Inc., New York, 1952). On page 154 it is stated that more than 60% of the TCCA color standards fluoresce detectably. Almost none of them appears to.

W. E. K. Middleton and C. L. Sanders, Illum. Eng. Soc. (N. Y.) 48, 254–256 (1953).

Newhall, Burnham, and Evans, J. Opt. Soc. Am. 48, 976–984 (1958). Figure 2 is taken from this article.

Deane B. Judd, J. Research Natl. Bur. Standards 24, 293–333 (1940).

Ralph M. Evans, J. Opt. Soc. Am. 39, 774–779 (1949).

D. L. MacAdam, J. Opt. Soc. Am. 25, 361 (1935).

Burnham, Evans, and Newhall, J. Opt. Soc. Am. 42, 597–605 (1952).

D. L. MacAdams, J. Opt. Soc. Am. 40, 589–595 (1950).

C. L. Sanders and G. Wyszecki, J. Opt. Soc. Am. 47, 398–404 (1957). G. Wyszecki and C. L. Sanders, ibid. 47, 840–842 (1957).

E. J. Breneman, J. Opt. Soc. Am. 48, 228–232 (1958).

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