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searching for Airy disk 2 found (51 total)

alternate case: airy disk

Perceptual paradox (1,484 words) [view diff] no match in snippet view article find links to article

narrowed to around 1mm for reading fine print, the size of the central "Airy" disk increases to a diameter of 10 photoreceptors. The so-called "blur" is

Atmospheric diffraction (959 words) [view diff] exact match in snippet view article find links to article

disk. This resembles an atmospheric Airy disc but is not actually an Airy disk. It is different from rainbows and halos, which are mainly caused by refraction