Quantized Energy 0 00 -1hcRH 6 5 16 4 -ghcRu 3 heRH 2 uraqunu wnquenb [edpouud E=h.v K81aug -hcRH 1 Microparticles have quantized energy!
Quantized Energy E h = ⋅ ν Microparticles Microparticles have quantized energy! have quantized energy! E h = ⋅ ν
6.4 Particle-Wave Duality Is light a wave or a particle? Light's wave characteristics-- electromagnetic radiation Light's particle characteristics- based on Einstein's interpretation of the photoelectric effect. E=h.v Particle-wave duality: “photons' It's both a wave and a particle!
6.4 Particle 6.4 Particle-Wave Duality Wave Duality • Light’s wave characteristics -- electromagnetic radiation • Light’s particle characteristics– based on Einstein’s interpretation of the photoelectric effect. Particle Particle-wave duality wave duality : “photons” It’s both a wave and a particle! E = ⋅ h ν
The Wave Behavior of Matter The particle nature Light→ The wave nature "If waves could behave like particles,can particles behave like waves? The particle nature Matter→s The wave nature ?? Based on the particle-wave duality of light de Broglie proposed Matter Wave Louis de Broglie h mV- λ：a wave P=mv(momentum):a property particle property
The Wave Behavior of Matter The particle nature The wave nature Light → The particle nature The wave nature ??? Matter → "If waves could behave like particles, can particles behave like waves?“ Based on the particle particle-wave duality wave duality of light de Broglie proposed Matter Wave The wave nature ??? m v h λ = P=m v (momentum): a particle property λ: a wave property Louis de Broglie
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 beams
The 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
Electron diffraction by crystals Diffracled electrons vacuum Electron diffraction rings Electron beam Thin metal foil Salt Crystal Screen
Electron diffraction by crystals Salt Crystal