free physics video tutorials for all







quantum theory

Quantum Theory summary
Planck's Quanta
Wave-particle duality
Heisenburg's Uncertainty Principle
The Wave Function
Quantum Tunneling
Quantum Entanglement
Bose-Einstein Condensate (BEC)


wave-particle duality

  The De Broglie Equation
  Optical interference from a double slit
  Quantum effects
  Wavelengths compared


electron diffraction

What is diffraction?
The Diffraction Grating
Bragg Diffraction
interference patterns
Electron, X-ray and neutron diffraction


photo-electric effect

History & the Photon Model
Wave theory predictions
Eienstein's Photo-electric Effect Theory
Millikan's Apparatus, stopping potential


energy levels, ionisation

Visualising energy levels
Energy level changes
Spectral groups
Excitation Potentials and Energies




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