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[Post New]18 Apr 2008 21:42:50 IST
    Subject: optics formulae
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coolriya (482)

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Olaaa!! Perrrfect answer. 88  [109 rates]
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Formulas for single lens (in air)
Coding rule of lenses (when light moves from left to right)


Focal length of two ideal lenses


Numerical aperture(Numerical Aperture : NA)


F number


Theoretical spot diameter of lens


Focal length of concave mirror


Magnification of beam expander


Light refraction (Snell?fs law)


Light shifted by parallel windows


Angle of beam deflection by wedge window


Surface reflectance (in air)


Critical angle


Brewster angle


Optical density (OD)







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