What do you understand by Dual nature of matter?
Or
What is de-Broglie relationship?
In 1905, Einstein suggested that lights has wave nature and particle nature(dual nature). In 1923, de-Broglie proposed that like light, matter (all materials particles)a lso has wave as well as particle nature(dual matter). He derived a relationship for calculation of the wavelength (A) of the wave associated with a particle of mass m, moving with a velocity v.
The above relation is known as de-Broglie’s relation and states that the wavelength of the matter wave is inversely proportional to its momentum. In 1927, Davisson and Germer verified experimentally the wave nature of electron.