Normal in Geometric Optics
The normal is the line perpendicular to the surface of an optical medium. In reflection of light, the angle of incidence and the angle of reflection are respectively the angle between the normal and the incident ray and the angle between the normal and the reflected ray.
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Famous quotes containing the words normal in, normal and/or geometric:
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—Friedrich Nietzsche (1844–1900)
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“In mathematics he was greater
Than Tycho Brahe, or Erra Pater:
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—Samuel Butler (1612–1680)