Clinton Joseph Davisson, an American physicist, was in the
employ of Western Electric (Bell Laboratories), Davisson was mainly
involved in thermionics and emission of electrons from metals under
electron bombardment. In 1927 Davisson with the aid of L.H. Germer
tested and confirmed that if you direct a beam of electrons on to a
crystal of nickel, instead of bouncing off, the beam diffracted.
For his confirmation of electron waves, Davisson shared the Nobel
Prize in physics in 1937 with G.P. Thomson.