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visual angle

the angle subtended by an object at the lens of the eye
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Examples from the Web for visual angle
Historical Examples
  • It will be human, and, as you know, comedy is but a matter of the visual angle.

    Tales Of Hearsay Joseph Conrad
  • Consequently the more distant the object, the smaller is its visual angle.

    Physics Willis Eugene Tower
  • The angle in question is called the angle of vision, or the visual angle.

    The Microscope Andrew Ross
  • Our doctrine has definitely outgrown the visual angle of ideology.

  • The length of the blowpipe is generally seven or eight inches, but this depends very much upon the visual angle of the operators.

  • The visual angle of an object is the angle at the eye lens between the rays that have come from the ends of the object.

    Physics Willis Eugene Tower
  • It may be safely said that the field or "visual angle" of the unaided eye for distinct vision is at least 45° in all directions.

    Visual Signaling Signal Corps United States Army
  • By this arrangement a visual angle is secured, and all objects lying within it are distinctly visible at the same time.

visual angle in Medicine

visual angle n.
The angle formed at the retina by the meeting of lines drawn from the periphery of the viewed object.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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