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Simulate the original experiment that proved that electrons can behave as waves. Watch electrons diffract off a crystal of atoms, interfering with themselves to create peaks and troughs of probability.
Make waves with a dripping faucet, audio speaker, or laser! Add a second source to create an interference pattern. Put up a barrier to explore single-slit diffraction and double-slit interference. Experiment with diffraction through elliptical, rectangular, or irregular apertures. Virtual lab for Waves: Interference and Diffraction of Water, Sound, and Light Waves. This video explains the theory required to perform the lab and walks yo. Phet Wave Interference Answers Make waves with a dripping faucet, audio speaker, or laser! Separation in the interference pattern? On a screen 1.25m away. Interference - the combination of two or more waves to form a resultant wave in which the displacement is either reinforced or canceled.
- Electron Diffraction
- Electron Diffraction, Energy Levels, Atomic Structure, Interference, Electrons, Wave-Particle Duality
Sample Learning Goals
- Recognize that electrons are reflected from a lattice mostly at certain angles due to wave interference.
Tips for Teachers
The teacher's guide contains tips for teachers created by the PhET team (PDF).
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|Windows Systems||Macintosh Systems||Linux Systems|
| Microsoft Windows 98SE/2000/XP/Vista|
Sun Java 1.5.0_15 or later
| OS 10.4 or later|
Apple Java 1.5.0_19 or later
|Sun Java 1.5.0_15 or later|
Phet Diffraction Analysis
Phet Simulation Diffraction
|Design Team||Third-party Libraries||Thanks To|