| 释义 |
Talbot2 Optics.|ˈtɔːlbət|
[The name of W. H. Fox Talbot (1800–77), English polymath: cf. Talbotype.]
Talbot's law, the law that a flickering source of light, varying in either colour or intensity, will be perceived as if it were a constant light source exhibiting the mean value of the varying quantity, provided that the frequency of flickering exceeds the flicker fusion frequency of the eye; also called the Talbot–Plateau law [J.A.F. Plateau (1801–83), Belgian physicist].
1895E. C. Sanford Course Exper. Psychol. I. vi. 146 (heading) The Talbot-Plateau law. 1906Bull. Bureau of Standards (U.S.) II. 2 Talbot's law is thus a statement of physiological rather than of physical phenomena, and depends for its explanation on the action of the eye. 1929L. T. Troland in C. Murchison Found. Exper. Psychol. iv. 187 The Talbot-Plateau law..has been established very accurately. 1943C. T. Morgan Physiol. Psychol. x. 198 As the [flicker] rate is lowered, the subjective brightness of a flickering light may considerably exceed that expected from Talbot's law. 1974Sci. Amer. Apr. 93/1 The law of color fusion, also known as Talbot's law (although it actually goes back to Isaac Newton), enables us to predict what color will be perceived when two colors are mixed. |