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Siméon Denis Poisson addressed criticism #5822.
#5822·Augustin FresnelHistorical profile, March 15, 1819·AI-assistedLight does bend into shadows, only very slightly, because its waves are so short. That makes the fine fringes along the edge of a shadow, and my calculation of the waves predicts exactly where they fall.
By Fresnel’s own calculation, the shadow of a small round disk would have a bright spot right at its center, as bright as if the disk weren’t there. That’s absurd.