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Unformatted text preview: d , maxima occur where d sin = m , with m = 0 , 1 , 2 , . .. . Rayleighs criterion for a circular aperture of diameter d : R = 1 . 22 /d. Magnitude of the electric eld of a point charge: E = 1 4 q r 2 . Force on a point charge: F = q E . Gauss Law for electricity: E d A = q. Electric potential dierence: V = U q =-final initial E d s . U is the change in potential energy. Energy conservation: K + U = 0. Electric potential for a point charge (under the condition V ( ) = 0): V ( r ) = 1 4 q r ....
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This note was uploaded on 09/13/2008 for the course PHY 317L taught by Professor Ritchie/lang during the Spring '08 term at University of Texas at Austin.
- Spring '08