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light: Definition, Synonyms and Much More from Answers.com (6505 words) |
 | Light is the basis for the sense of sight and for the perception of colour. |
| Light that is all of the same wavelength and phase (all the waves are in step with one another) is called “coherent”; one of the most important modern applications of light has been the development of a source of coherent light—the laser. |
| The scientific study of the behavior of light is called optics and covers reflection of light by a mirror or other object, refraction by a lens or prism, diffraction of light as it passes by the edge of an opaque object, and interference patterns resulting from diffraction. |
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