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visual angle

noun

  1. 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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Example Sentences

That means that you sampled about 3-16 square degrees of visual angle in the room, between the door and the chair; whereas your visual field is about 1200 square degrees in total.

The critical central retina subtends an area of visual space of about 1 square degree of visual angle.

It samples the location of the eye 2,000 times per second and has a spatial accuracy down to 0.15 degrees of visual angle.

The words sharp and pungent both originally meant something tactile and visual: something that feels pointy or subtends a small visual angle, but both words can be applied to tastes and smells as well.

From Slate

It seems almost everything we do now has a visual angle.

From BBC

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