Which phenomenon best supports the theory that matter has a wave nature?

In the Davisson-Germer experiment,an electron beam with a wavelength of $1.5 \ \mathring{A}$ is incident normally on a crystal with an atomic spacing of $3 \ \mathring{A}$. At what angle (in degrees) will the first maximum be formed?

The Davisson-Germer experiment that first demonstrated the wave nature of matter used electrons accelerated to $54 \ V$. Determine the wavelength of the electrons in the Davisson-Germer experiment in $\mathring{A}$.

In the Davisson-Germer experiment,which is the correct curve between the intensity $(I)$ of scattered electrons and the scattering angle $(\phi)$?

Explain Heisenberg's uncertainty principle.

An electron behaves like a wave because it......