optics


From The Collaborative International Dictionary of English v.0.48:

Optics \Op"tics\, n. [Cf. F. optique, L. optice, Gr. ? (sc. ?).
   See Optic.]
   That branch of physical science which treats of the nature
   and properties of light, the laws of its modification by
   opaque and transparent bodies, and the phenomena of vision.
   [1913 Webster]
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