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refraction
Part of speech: NounThe change of direction of a ray of light in passing obliquely from one medium to another of different density.
Usage examples "refraction":- The equal diffusion of its light on earth is owing to the refraction of the rays by the atmosphere, and their reflection from other bodies. - "The Complete Poetical Works of Percy Bysshe Shelley Volume III", Percy Bysshe Shelley Edited by Thomas Hutchinson, M. A..
- He went carefully into the question of refraction, the importance of which Tycho had been the first astronomer to recognise, though he only applied it at low altitudes, and had not arrived at a true theory or accurate values. - "Kepler", Walter W. Bryant.
- You remember the trouble I had with the refraction from the second prism. - "Gossamer 1915", George A. Birmingham.