What is the speed at which Poincaré proposed gravitational waves propagate?
Speed of Sound
Speed of Light
Half the Speed of Light
Twice the Speed of Light
Answer
In 1905, Henri Poincaré first proposed the existence of gravitational waves, which he believed emanated from a body and propagated at the speed of light. These waves are disturbances in the curvature of spacetime caused by the acceleration of massive objects.
Mastering the Mind of Henri Poincaré: A Journey Through the Life and Legacy of a Mathematical Genius
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