Photocell
Shows an application of the inner photoeffect. A photocell illuminated by a bright light source generates enough current to run a small DC motor.

Gas Discharge – Interaction of Accelerated Electrons with Gas Molecules
Electrons are accelerated through a cathode ray tube and fluorescence is observed. A magnet can be used to deflect the electron beam.

Photoelectric Effect Demo
This demonstration qualitatively shows the discharging of a negatively charged metal plate under UV radiation.

Fluorescent materials
Various rocks fluoresce under UV light.

Maltese Cross Electron Tube
Shadow of a metal cross cast by a broad electron beam demonstrates the particle properties of electrons.

Electron Diffraction Apparatus
The electron gun projects a narrow beam of electrons through a thin layer of graphitized carbon onto a fluorescent screen.

Superconductivity
Induced current in superconducting disk causes magnetic field that repels a small magnet and forces it to levitate.