Huygens' principle

noun
Huy·gens' principle
variants: or less commonly Huyghens' principle \ˈ⸗gənz(ə̇z)- \

Definition of Huygens' principle 

: 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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