The Wave Behavior of Matter Matter wave---de Broglie's wave h mv To study small objects: a)X-ray diffraction b)Electron diffraction The discovery ofelectron diffraction by crystals in 1927 Diffraction pattern of by Dayvisson and Germer electron beamsThe Wave Behavior of Matter v h m λ = Matter wave Matter wave---de Broglie’s wave de Broglie’s wave To study small objects: a) X-ray diffraction b) Electron diffraction Diffraction pattern of electron beams The discovery of electron diffraction by crystals in 1927 by Dayvisson and Germer