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Colorimetry of Shiny Biological Specimens

Published online by Cambridge University Press:  31 May 2012

W. E. K. Middleton  and
G. W. Wyszecki
W. E. K. Middleton
Affiliation:
National Research Council, Ottawa, Canada
G. W. Wyszecki
Affiliation:
National Research Council, Ottawa, Canada
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Extract

Professor John Stanley of McGill University recently asked the National Research Council for assistance in specifying the colors of flour beetles (Tribolium). These insem are small (3 or 4 mm. long), rounded, dark, and shiny, and therefore present a somewhat unusual colorimetric problem. It is felt that the solution of this problem may be of some general interest.

The small size of the specimens seemed to preclude physical methods of colorimetry. It was felt that the most likely visual method would be direct comparison with Munsell papers or other standard colored surfaces. The difficulty with this was the very different appearance of the smooth, flat paper and the shiny. rounded beetle.

Type
Articles
Information
The Canadian Entomologist , Volume 88 , Issue 12 , December 1956 , pp. 683 - 685
Copyright
Copyright © Entomological Society of Canada 1956

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References

1 For a general discussion of color systems, see Judd, D. B., Color in Business, Science, and Industry, New York 1952, Wiley, pp. 172 ff.Google Scholar

2 Middleton, W. E. K. and Mungall, A. G., Colorimetry of Bronze Paints, J. Opt. Soc. Am. 42: 969–970, 1952.CrossRefGoogle Scholar

3 Middleton, W. E. K. and Sanders, C. L., An improved sphere paint. Illum. Eng. (N.Y.) 48: 254–256, 1953.Google Scholar