In this lesson, students will investigate the nature of radioactivity and the effect of both distance and shielding materials on different radioactive sources using a Geiger-Muller tube with a counter ...

A Geiger counter, also known as the Geiger-Muller tube, is an inexpensive and useful instrument used to quickly detect and measure radiation. There are two types of radiation, non-ionizing and ...

Geiger counters are a popular hacker project, and may yet prove useful if and when the nuclear apocalypse comes to pass. They’re not the only technology out there for detecting radiation however.

My first encounter with one of the devices was only about three decades after its improvement as an invention. There was no reason for me to need one prior to then. I was a young second lieutenant in ...