Phillips, Percy · London : T. C. & E. C. Jack ; New York : Dodge Pub. Co. · leaf 32
13,represent successive positions of the wave-front passingthrough the plate, which is shaded. The amount ofsideways displacement depends upon the obliquity ofthe wave to the surface as well as on the thickness ofthe plate. The displacement is evidently zero when the REFLECTION AND REFRACTION 29… … > - Fig. 14.plate is not parallel to the first we have a prism. Afterpassing through a prism the direction of the wave isaltered as well as being shifted sideways, for the waveon reaching the second surface is not inclined to it atthe same angle as it was to the first surface and there-fore it…
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