Article: Geiger Counter.(Brief Article)

This month, we will build an inexpensive Geiger counter. Geiger counters are instruments that can detect and measure radioactivity. H. Geiger and E. W Muller invented the Geiger counter (properly named the "GeigerMuller counter") in 1928.

With a Geiger counter, you can check materials and environments for radioactivity. You could even go prospecting for uranium, if you wanted. The Geiger counter can also be used to check for radon in your basement. Radon, a slightly radioactive gas that seeps out of the earth, would show itself by increasing the radiation counts over what's called the "normal background" radiation.

Radioactivity

Radioactivity ...

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