| 单词 | refraction |
| 释义 | refraction (once / 4085 pages) n Refraction is the bending of light or sound as it passes through something like a wall (sound) or a window (light). The result of the refraction of light particles as they pass through water or a prism is a rainbow. Since different colored light particles move at different speeds, refraction causes the colors to split by how fast they are moving. Sound waves also experience refraction when traveling in warm air over cool water. This is why you can sometimes hear someone talking from far across a lake in the morning or evening. WORD FAMILYrefraction: refractions+/refract: refracted, refracting, refraction, refractive, refracts/refractive: refractiveness, refractivity USAGE EXAMPLESWonder material: Scientists measured a property called negative refraction in the promising material graphene. BBC(Dec 13, 2016) Happily, more upbeat thoughts can be found in the recently revised and expanded edition of “Reflections & Refractions,” a collection of Silverberg’s essays and magazine columns. Washington Post(Nov 08, 2016) In all three ballets, women stretch one leg and both arms upward in lines that suggest the refraction of light from a jewel. New York Times(Sep 27, 2016) 1n the change in direction of a propagating wave (light or sound) when passing from one medium to another Hypo|Hyper birefringence, double refraction splitting a ray into two parallel rays polarized perpendicularly physical phenomenon a natural phenomenon involving the physical properties of matter and energy 2n the amount by which a propagating wave is bent Syn|Hyper deflection, deflexion bend, bending movement that causes the formation of a curve |
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