wavefront and huygen's principle || 3D animated explanation || class 12th physics || Wave optics ||

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wavefront and huygen's principle || 3D animated explanation || class 12th physics || Wave optics ||

Wavefront
A wavefront is a surface over which an oscillation or vibration in a wave has a constant phase. In simpler terms, it represents the crest of a wave at any given moment in time.

Huygens' Principle
Huygens' Principle, proposed by Dutch physicist Christiaan Huygens in 1678, is a method of analysis applied to problems of wave propagation both in the far-field limit and in near-field diffraction. It states that every point on a wavefront acts as a source of secondary spherical wavelets, and the sum of these secondary wavelets determines the shape of the wave at any subsequent time.