| 单词 | optical length |
| 释义 | > as lemmasoptical length optical length n. the distance which in a vacuum would contain the same number of wavelengths as the actual path followed by a ray of light, equal to the product of the actual path-length and the refractive index of the medium if the latter is homogeneous. ΘΚΠ the world > matter > physics > electromagnetic radiation > light > emission of light, radiation > [noun] > optical path optical path1893 optical length1894 path length1900 Rayleigh limit1922 eikonal1923 1894 London, Edinb., & Dublin Philos. Mag. 5th Ser. 37 515 The time it takes for an impulse at G to pass completely through F will be that required by light to go over a space equal to the difference in optical length of the extreme rays GBF and GAF. 1934 W. H. A. Fincham Optics ii. 26 nl is termed the optical length of a path l in medium of refractive index n. 2001 ASAP (Nexis) 1 June 117 It is crucial that the optical length of both interferometer arms is maintained absolutely constant during the integration time of the CCD camera. < as lemmas |
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