What is Poisson known for predicting?
Arago spot
Black hole
Quantum leap
Relativity
Answer
Arago spot, a bright spot at the center of the shadow of a circular object, is predicted by Poisson's theory of diffraction. This phenomenon occurs when light waves diffract around the edges of the object, creating a region of constructive interference at the center of the shadow. Poisson's theory accurately predicts the size and intensity of the Arago spot, which has been experimentally verified.
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