单词 | shadowgraph |
释义 | shadowgraph [`shad·ō´graf] GRAPHIC ARTS 1. A photographic image in the form of a shadow. 2. See <<radiograph>> OPTICS A simple method of making visible the disturbances that occur in fluid flow at high velocity, in which light passing through a flowing fluid is refracted by density gradients in the fluid, resulting in bright and dark areas on a screen placed behind the fluid. |
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