Atomic Spectrometry. Several spectrum tubes e.g. He, H, Ar, Ne etc are available. Be sure to collect the diffraction grating 'glasses' after using this demostration.

setup time: < 10 minutes

Cloud Chamber with Pb²¹⁰ source to observe &alpha particles. Expernal submersible pump nessesary for operation. This setup requires ice for the cooler and approximately 30 minutes to cool to the point tracks can be seen with the addition of alcohol introduced via the eyedroppper.

setup time: < 30 minutes (assuming ice already available)

Turn on the Geiger counter and point it at the plate. Radioactive uranium in the paint causes audible clicks.

setup time: < 5 minutes