Cloud Chamber Cold Plate gases Attach the springs to the Attach the springs to the hemispheres and pull to demonstrate the increased force required to separate the halves 40 250ml 24 40 PTFE Included Size Material Cloud Plate 150 x 150 x Thickness 35 mm Resin (PVC) Observation Dome 100 x 100 x Height 110 mm Transparent resin (PVC) Hot water tub 130 x 130 x 70 mm Resin (PVC) Super luminosity LED light Alt radiation source for cloud chamber PVC Rod φ13 x 24 mm Defrosting plate 80 x 80 mm Radiation tracks can be monitored for a period of up to 20 minutes (until ethanol has evaporated) in a room with a temperature of 25℃ (77°F)