| 单词 | critical flicker frequency |
| 释义 | > as lemmascritical flicker frequency critical flicker frequency n. Physiology and Optics the value of the frequency of variation of a regularly varying light source at which it passes between being seen as flickering and being seen as steady; = flicker-fusion frequency n. at flicker n.3 Compounds 2, fusion frequency n. at fusion n. Compounds 2.In general the brighter the source, the higher the critical flicker frequency. ΚΠ 1909 Trans. Illuminating Engin. Soc. (U.S.) 4 717 f is the critical flicker frequency. 1922 Jrnl. Optical Soc. Amer. 6 7 The substantial independence of critical flicker frequency upon chroma is..the basis of the critical frequency method of heterochromatic photometry. 2012 R. W. Proctor & J. D. Proctor in G. Salvendy Handbk. Human Factors & Ergonomics (ed. 4) iii. 74/1 The critical flicker frequency can be as high as 60 Hz for large stimuli of high intensity, but typically it is less. critical flicker (also fusion) frequency flicker-fusion frequency n. the lowest rate of variation at which flicker is not perceptible; also called critical flicker (also fusion) frequency. ΘΚΠ the world > matter > physics > electromagnetic radiation > light > [noun] > state of equilibrium photoequilibrium1906 flicker fusion1936 flicker-fusion frequency1944 1944 Federation Proc. (Federation Amer. Soc. Exper. Biol.) 3 6 (heading) Changes in flicker fusion frequency (F.F.F.) under experimental stress. 1962 H. C. Weston Sight, Light & Work (ed. 2) v. 161 The fluctuation in light output of electric lamps caused by a 50-cycle alternating current..is faster than the usual ‘flicker fusion frequency’ for the bright-adapted eye. < as lemmas |
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