Carhart, Henry S. (Henry Smith), 1844-1920 · Boston : Allyn and Bacon · leaf 182
ave has been investigated by Stokes, who has shown that the effect of anelementary wave at any external point varies as (1 + cos #),where 6 is the angle between the normal to the primarywave and the line joining the point to the centre of theelementary wave. This quantity vanishes when # = TT,… … 135. Reflection of a Plane Wave at a Plane Surface(D., 117). — Let AB (Fig. 78) be a portion of the planeadvancing wave, and let CD be the reflecting surface. IfAB had met with no obstruction it would have taken theposition AB atthe instant whenB arrives at B.But A becomesa new centre…
Physics
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