Question

Who defined the dual nature of matter?

Answer 1

Answer:

According to the de Broglie concept of matter waves, the matter has dual nature. It means when the matter is moving it shows the wave properties (like interference, diffraction etc.) are associated with it and when it is in the state of rest then it shows particle properties. Thus the matter has dual nature.

Answer 2

Louise de broglie proved the dual nature of the matter.