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Object detail vs. acceptance angle
By: plintilh
The finer the spatial detail in an object the wider the diffraction angle - easily seen with a laser pointer and a fine grating.
Deriving Numerical Aperture = N.A.
By: plintilh
The geometries of diffraction patterns must match the geometries of acceptance angle.
Numerical Aperture vs useful magnification
By: plintilh
A quick estimate of useful magnification: N.A. X 1000.
Acceptance angle vs working distance
By: plintilh
Working distance decreases with increasing acceptance angle.