QUANTUM OPTICS - A branch of physics employed when studying detailed effects that occur when light is absorbed by matter, films emulsion for example.
QUARTZ LIGHTS - Generic term for various types of lights that use tungsten-halogen lamps.
Before quantum optics became important, optics consisted mainly of the application of classical electromagnetism and its high frequency approximations to light. Classical optics divides into two main branches: geometric optics and physical optics.
 See also: Optics, Effects, Photograph, Matte, Quantum
  
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