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Catoptric light

Source : Webster's Revised Unabridged Dictionary (1913)

Catoptric \Ca*top"tric\, Catoptrical \Ca*top"tric*al\, a. [Gr.
   ?. See {Catopter}.]
   Of or pertaining to catoptrics; produced by reflection.

   {Catoptric light}, a light in which the rays are concentrated
      by reflectors into a beam visible at a distance.
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