(Q633620)

English

ray

in geometrical optics: an idealized model of light; a line that is perpendicular to the wavefronts of the actual light, and that points in the direction of energy flow

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Lasers.JPG
4,032 × 3,024; 4.51 MB
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LASER.JPG
4,032 × 3,024; 2.63 MB
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