Airy disc


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Airy disc

(ār'ē),
the image of a circular blur formed by a distant point source of light on the retina because of diffraction by the edge of the pupillary aperture where the diameter of the image decreases as the aperture increases.
Farlex Partner Medical Dictionary © Farlex 2012

Airy disc

(ār'ē disk)
The image of a circular blur formed by a distant point source of light on the retina because of diffraction by the edge of the pupillary aperture where the diameter of the image decreases as the aperture increases.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
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However, one should note that, in the single pinhole experiments, at the image plane of the lens the zero light intensity outside the central Airy disc of the pinhole image is a result of destructive quantum interference.