Category Archives: 1. How has understanding about the physical world changed?

Energy levels

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Electron Diffraction – F-J’s Physics

Particles or waves? A look at particles and when they can behave like waves. The strange nature of wave-particle duality in quantum physics.

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Electron Diffraction: A-level Physics

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Professor Dave: Quantization of Energy

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Professor Dave: Quantum Mechanics of the Electron

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Professor Dave Explains – The Double-Slit Experiment

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Interference Demo: Speakers

This is a demonstration of the interference pattern created by two speakers playing the same 2000 Hz tone. It is carried out by moving a microphone through the sound field and noting that the sound is louder in some spots … Continue reading

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Pipe resonance

A column of water and a tuning fork are used to illustrate the raised amplitude that results from pipe resonance

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Professor Dave: Interference, Reflection, and Diffraction

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PhET – Wave Interference

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.

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