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nobody

13 Ian 2011 19:11



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"Airy disc of the perfect diffraction pattern has:
linear radius of 1.22λF,
angular radius of 1.22λ/D (in radians),
and contains 83.8% of the total energy."
f - distanta focala
D - diametrul obiectivului/oglinzii
F=f/D - raportul focal