Color for Philosophers: Unweaving the Rainbow by C. L. Hardin

By C. L. Hardin

This booklet is presented the 1986 Johnsonian Prize in Philosophy. This increased version of C. L. Hardin's ground-breaking paintings on color encompasses a new bankruptcy, 'Further recommendations: 1993', during which the writer revisits the dispute among color objectivists and subjectivists from the point of view of the ecology, genetics, and evolution of color imaginative and prescient, and brings to endure new info on person variability in color conception.

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Additional resources for Color for Philosophers: Unweaving the Rainbow

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Each spectral color, because it is evoked by mono­ chromatic light, always involves the minimum possible whiteness re­ sponse and is, therefore, the maximally saturated version of that hue. ) Yellows will typically be brighter than blues because, for light of moderate intensity, they are seen at that region in the spectrum for which the eye is most sensitive . 36 CHROMATIC RESPONSE Now notice that, at several spectral loci, one or the other of the opponent curves crosses the zero line . This means that the corre­ sponding opponent system is in neutral balance at that point.

The spectrum is the hue gamut of maximum sat­ uration. Finally, colors seen through apertures or perceived as self­ luminous will vary along a range, with very dim colors at one end of the range and very bright or dazzling colors at the other. The colors ranged in this way vary in brightness. Objects that are not seen through apertures or perceived to be self-luminous vary in lightness. Let us take stock of what we have found out so far about the visual system in general and the achromatic colors in particular.

COLOR PERCEPTION AND SCIENCE one colored region to another of similar appearance but different spectral composition will have the same effect, generating chromatic inhomogeneities in largish (IO-degree) color fields . Adaptation is an important part of our story, and we shall have more to say about it shortly . Let us now turn our attention to the microstructure of the retina and the connections among its components . Figure 1-3 is a schematic diagram of a retinal section. Notice that the light comes in from the bottom of the figure and that the receptors are at the top; the mam­ malian retina is turned inside out!

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