Minus Comm – Cloud Chamber

The cloud chamber uses two peltier coolers to lower the temperature of a container. Alcohol is evaporated a the top, and flows down due to diffusion, in the colder environment it is supersaturated. This allows clouds to form around radioactive particles.

Hands-on activity at the Festival:
Watching particle trails, Identifing different particles. Playing with different types of sources, (bananas, KCL salt substitute, background radiation, effects of magnets etc)