| 单词 | reciprocity law |
| 释义 | > as lemmasreciprocity law reciprocity law n. Photography the principle that the degree of darkening of an ideal emulsion is constant for a given incident energy, i.e. for a given product of light intensity and exposure time. ΘΚΠ society > leisure > the arts > visual arts > photography > action of taking photograph > technical factors > [noun] > reciprocity law or failure reciprocity1815 reciprocity law1900 reciprocity failure1907 1900 Sci. Abstr.: Physics & Electr. Engin. 3 852 He [sc. Eder] shows how these variations from Bunsen's reciprocity law may be corrected in determining the sensitiveness of a plate. 2004 Digital Photographer No. 24. 50/2 Film suffers from Reciprocity Law failure. Digital suffers not from that, but from ‘noise’ over long exposures. < as lemmas |
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