De Broglie's Hypothesis

Like light, matter also has a wave-particle dual nature.Matter is particle like, for example, when electrons are deflected by a magnetic field.Matter is wave-like when electrons undergo diffraction.The idea that matter can behave as a wave was first put forward by Louis de Broglie, extending the idea of the wave-particle duality of light.The de Broglie wavelength is the wavelength of particles.Electron microscopes use electrons as a source of radiation rather than visible light as electrons have a much smaller wavelength than visible light.