Each point on a primary wavefront serves as the source of spherical secondary wavelets such that the primary wavefront at some later time is the envelope of these wavelets. Moreover, the wavelets advance with a speed and frequency equal to that of the primary wave at each point in space. A s per Huygens principle, only the forward movement of a wave is explained, but the construction will generate a wave travelling back to the source also. In a homogenous medium that is not observed.
How does one explain that? need physical and mathematical explanations (or references)
2006-12-05
16:54:34
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3 answers
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asked by
maheswar_ojha
1