Which theory did Poisson try to disprove?
Wave theory
String theory
Quantum theory
Relativity theory
Answer
Wave theory, which proposed that light traveled as waves, was challenged by Poisson. He attempted to disprove it by predicting that a bright spot would appear in the center of the shadow of a circular obstacle, a phenomenon known as Poisson's spot. However, experiments by Arago and Fresnel demonstrated the absence of such a spot, supporting the wave theory and disproving Poisson's hypothesis.
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