# Physcis - Wavefront and wavelets

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Describe how the wavelets that form in the wavefront apparently vanish behind it?

• Physcis - Wavefront and wavelets -

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• Physcis - Wavefront and wavelets -

Actually to explain the energy propagated by a wave , ther is a proposed obliqiuty factor ,1+cos(theta)=q .
In the case when the backward wavefront is taken the angle becomes 180degrees and as a result q= 0 , it means no energy propagation in the backward direction.

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