Acoustical Measurements

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Language: English

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Recall that a sine wave moving to the right in one space dimension can be represented by A(x, t) = A0 sin(kx − ωt), (5.1) where A0 is the (constant) amplitude of the wave, k is the wavenumber, and ω is the angular frequency, and that the quantity φ = kx − ωt is called the 95 Figure 5.1: Sketch of wave fronts for a wave in spacetime. The phase difference between these trajectories leads to an interference pattern, which is magnified by an electrostatic lens. In short, the measurement problem is this: Quantum theory implies that measurements typically fail to have outcomes of the sort the theory was created to explain.

Pages: 841

Publisher: Acoustical Society of Amer; Revised edition (June 1988)

ISBN: 0883185903

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