Electron Diffraction
Fast electrons are diffracted from a polycrystalline layer of graphite: interference rings appear on a fluorescent screen. The interplanar spacing in graphite is determined from the diameter of the rings and the accelerating voltage.

Wave Phenomena with the Ripple Tank
In the ripple tank water waves are generated by a vibration generator. Circular and plane waves are then used to investigate the dependency of the vibration frequency on the wave length.

Franck-Hertz Ne-Tube
Electrons are accelerated in a tube filled with neon vapour. The excitation energy of mercury is determined.

Stirling Engine
With the Stirling engine, we show the transfer from thermal to mechanical and electrical energy within one experiment.

Hall Effect in Germanium
The resistivity and Hall voltage of a rectangular germanium sample are measured as a function of temperature and magnetic field.