A Cloudmaster, “public demonstration”, cloud chamber manufactured by Nuclear Chicago. The chamber has a 14 cm diameter by 10 cm tall plexiglass chamber in which samples of radioactive ore or a similar nuclear radiation source can be placed. An alcohol-soaked felt pad at the top of the chamber generates an atmosphere of alcohol vapour. Dry ice placed at the base of the chamber cools the vapour in that area to below its saturation point and particle tracks are triggered by radiation emitted from the source. The Cloudmaster kit also has a light, mounted on a 10.5 cm cubical metal box, that assists illumination of the tracks. The box houses a power supply for the light as well as a 600 V power supply that can be used to remove charges and allow rapid, repeated viewings of the tracks. The chamber, mounted on an aluminum support stand, stands 23 cm tall.
