Atomic spectrum of hydrogen Student activity Play

Fermat's Principle Student activity Play

Fermat's Principle Simulation Play

Infrared radiation Student activity Play

Intensity of the emitted radiation Animation Play

Line emission spectra Student activity Play

The heat emitted to the radiator Animation Play

The type and charge of emitted particles Simulation Play

Uses of light emitted by atoms Animation Play

Wavelength λ (nm) Whiteboard exercise Play

α decay Whiteboard exercise Play

α decay Student activity Play

β decay Whiteboard exercise Play

β decay Student activity Play