Translations:Huygens’ principle/5/en

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Huygens’ principle embodies a simple but powerful physical concept that serves to explain in a lucid manner how an arbitrary wavefront progresses from one point to another (Robinson and Clark, 2006b[1]). According to this hypothesis, each individual point on an advancing wavefront is disturbed. It therefore acts as a source of a distinct expanding disturbance of its own. Thus, each point of the wavefront at time t excites a secondary spherical wavelet that travels outward in all directions from this point. At a later instant , the new composite wavefront is the summation of the separate effects of all the wavelets originating in the earlier wavefront at the earlier time t. Graphically, the advanced wavefront is the envelope of all the individual wavelets. Figure 10 shows three examples of such summations.

  1. Robinson, E. A., and R. D. Clark, 2006b, Huygens’ principle: The Leading Edge, 25, no. 10, 1252–1255.