Phillips, Percy · London : T. C. & E. C. Jack ; New York : Dodge Pub. Co. · leaf 32
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 will not be bent back by the… … Fig. 15.the greater the inclination of the wave to the surfacehas an interesting application in the views of externalthings which are obtained by an eye placed under water,i.e. the fish eye view of the world. In Fig. 15, E repre-sents the point under the water from which external 30 THE SCIENCE OF…
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