how to pronounce aperture

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meanings of aperture


  1. Something which restricts the diameter of the light path through one plane in an optical system.
  2. The (typically) large-diameter antenna used for receiving and transmitting radio frequency energy containing the data used in communication satellites, especially in the geostationary belt. For a comsat, this is typically a large reflective dish antenna; sometimes called an array.
  3. The diameter of the aperture (in the sense above) which restricts the width of the light path through the whole system. For a telescope, this is the diameter of the objective lens.
  4. The maximum angle between the two generatrices.
  5. An opening, gap, or hole, usually small and narrow.

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