what is Airy radius

what is Airy radius


1 Answers

2061 Points
7 years ago
Diffraction limit prevents the study of samples that are much
smaller than the wavelength of light used as a probe. In practice, two objects will
appear as distinct images under a microscope if the distance between their centres
is greater than the Airy radius, rAiry = 0.61λ/a, where λ is the wavelength of the incident
beam of radiation and a is the numerical aperture of the objective lens, the lens
that collects light scattered by the object.
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