who predicted that all matter can behave as waves
Matter wave Matter waves are a central part of the theory of quantum mechanics, being an example of wave–particle duality. All matter can exhibit wave-like behavior. For example, a beam of electrons can be diffracted just like a beam of light or a water wave. The concept that matter behaves like a wave, proposed by Louis de Broglie in 1924, is also referred to as the de Broglie hypothesis (/dəˈbrɔɪ/).[1] Matter waves are referred to as de Broglie waves.