A Gaussian distribution of amplitudes in an ultrasonic beam reflected from liquid‐solid interfaces is used in the reexamination of the concept of “beam displacement” which occurs at the angle of excitation of surface waves on the interface. Experimental results show that the energy of the reflected beam is redistributed into two or more beams at (or near) this angle. The theory of Brekhovskikh has been extended to include both a Gaussian input beam and the second derivative of the phase shift upon reflection. Reasonable agreement is obtained between theory and experiment for water‐aluminum and water‐brass interfaces. For water‐beryllium and water‐stainless steel the agreement is fair.

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