426 Diffraction Patterns and PolarizationP38.60(a)We requireθλmin.===1222DLDLradius of diffraction disk.Then2244=..(b)D=×=−2 44 500 100 1504289..m mmejafµP38.61The limiting resolution between lines min..××−−−550 10500 10134 10934Dmmrad.Assuming a picture screen with vertical dimension A, the minimum viewing distance for no visiblelines is found from min=A485L. The desired ratio is thenLA×=−14851485 1 34 1015 44min..rad.P38.62(a)Applying Snell’s law gives nn21sinsinφθ=. From the sketch, we alsosee that:θφβπ++=, or φπ θβ=− +bg.Using the given identity:sinsin coscos sinφπβπ=+−+,which reduces to:sinsin.FIG. P38.62(a)Applying the identity again:sinsin coscos sinβθ.Snell’s law then becomes:sin coscos sinsinθβ+=or (after dividing by cos
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This note was uploaded on 12/14/2011 for the course PHY 203 taught by Professor Staff during the Fall '11 term at Indiana State University .