(optics) The angle subtended by the radius of the entrance pupil of an optical instrument at the object.
aperture angle
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(′ap·ə·chər ′aŋ·gəl)
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 | Sci-Tech Dictionary. McGraw-Hill Dictionary of Scientific and Technical Terms. Copyright © 2003, 1994, 1989, 1984, 1978, 1976, 1974 by McGraw-Hill Companies, Inc. All rights reserved. Read more |
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