A cloud chamber is used for detecting particles of ionizing radiation. It is an airtight, super cooled, supersaturated environment. Today we will show you how to build this device in he luxury of your own home with simple materials. Question: If a cop uses IR to check your speed, couldn’t you just use a simple remote control to jam his signal? Answer: Short answer…no. The first and most practical reason is that remote controls are relatively weak and they don’t have a great range.[via] Cloud Chamber, Radar jamming.