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Named after Dutch physicist Christiaan Huygens and French physicist Augustin-Jean Fresnel.
Etymology from Wiktionary, CC BY-SA 4.0.
Huygens-Fresnel principle
Today it means: A method of analysis applied to problems of wave propagation, stating that every point on a wavefront is itself the source of spherical wavelets, and the secondary wavelets emanating from different points mutually interfere. Full definition →