| 单词 | path difference |
| 释义 | > as lemmaspath difference path difference n. Physics a difference in path length. ΘΚΠ the world > matter > physics > science of sound > sound-waves > [noun] > path followed by path difference1900 path length1900 the world > matter > physics > electromagnetic radiation > light > emission of light, radiation > [noun] > optical path > calculation of path difference1900 ray tracing1918 ray trace1942 1900 Philos. Trans. (Royal Soc.) A. 193 349 V is the visibility-function, in terms of u, the path-difference. 1929 J. K. Robertson Introd. Physical Optics ix. 186 If the thickness of the film gradually increases, the path difference between..pairs of interfering rays will do so also. 1962 A. Nisbett Technique Sound Studio i. 28 (caption) The effective path difference (i.e. the extra distance travelled by the [sound] wave to reach the back of the ribbon 1) is equivalent to the distance D round the magnet pole-piece 2. 1988 D. J. Tritton Physical Fluid Dynamics (BNC) (ed. 2) 428 Whether this interference is constructive or destructive depends on the optical path difference. < as lemmas |
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