Question

Huggen's construction,​

Answer 1

Huygens' construction. Huygens' principle, in optics, a statement that all points of a wave front of light in a vacuum or transparent medium may be regarded as new sources of wavelets that expand in every direction at a rate depending on their velocities.

a principle in physics: every point of an advancing wave front is a new center of disturbance from which emanate independent wavelets whose envelope constitutes a new wave front at each successive stage of the process.

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