| 单词 | diffraction |
| 释义 | diffraction /di frak"sheuhn/, n. Physics. 1. the phenomenon exhibited by wave fronts that, passing the edge of an opaque body, are modulated, thereby causing a redistribution of energy within the front: it is detectable in light waves by the presence of a pattern of closely spaced dark and light bands (diffraction pattern) at the edge of a shadow. 2. the bending of waves, esp. sound and light waves, around obstacles in their path. [1665-75; < NL diffraction- (s. of diffractio) a breaking up, equiv. to L diffract(us) broken up (ptp. of diffringere) + -ion- -ION. See DIF-, FRACTION] |
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