What is a geiger counter and how do you use it?

Answer 1

A Geiger counter is a particle detector that measures Ionizing radiation, and emissions from nuclear radiation. Many of the Geiger counters are hand held and can be read from a screen on the front.

Answer 2

The geiger counter pumps electricity through a noble gas geiger tube with a metal wire in the middle. The wire picks up discharges from ionizing radiation.