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单词 photochromatic interval
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photochromatic interval
photochromatic interval n. Psychology the difference between the minimum light stimulus needed for monochromatic vision and the minimum needed for colour vision.
ΚΠ
1912 K. Dunlap Syst. Psychol. iv. 65 The interval, therefore, between the light-threshold and the color-threshold, is called the photochromatic interval.
1945 Science 29 June 656/1 In this instance the photochromatic interval decreases sharply in the yellow and orange.
1997 G. A. Gescheider Psychophysics (ed. 3) ii. 18 The size of the photochromatic interval varies with wavelength, being smallest for the long wavelengths.
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