Everything for Electronics
Nuts & Volts Magazine (March 2005)

Build a Geiger Counter - Part 1

By John Iovine    View In Digital Edition  

A Geiger counter produces an audible click and blinks an LED each time it detects a radioactive particle. Typically, the counter clicks 10-20 times a minute due to normal background radiation (which is less than 80 millirem/hr) and — although the device is sensitive enough to measure background radiation — it is not suitable for measuring radon gas.


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