单词 | wave normal |
释义 | wave normal [`wāv `nȯr·mǝl] PHYSICS 1. A unit vector which is perpendicular to an equiphase surface of a wave, and has its positive direction on the same side of the surface as the direction of propagation. 2. One of a family of curves which are everywhere perpendicular to the equiphase surfaces of a wave. |
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