How does a Geiger counter detect radiation, and why does it make that clicking noise?
In: 4333
A Geiger counter is simply a metal tube filled with an inert gas with a positively charged rod in the middle. As radiation enters the tube, it ionizes the gas which sends the ripped off electrons down the rod. This creates a momentary electrical current which activates the speaker. Anything that can measure an electrical current or be altered by the current could replace the clicking sound (led light or multimeter for example)
Latest Answers