But how exactly do Geiger counters work, and why do they make that iconic clicking sound? A Brief History of the Geiger Counter. Graphic House // Getty Images. A row of Geiger counters, 1955.

"Hearst Magazines and Yahoo may earn commission or revenue on some items through the links below." Geiger counters are used to detect and measure levels of radioactivity. Scientists invented the ...

Over the years we’ve covered many projects aimed at detecting elevated radiation levels, and a fair number of them have been Internet connected in some way. But as they are often built around… ...

It was the unmistakable sound of a Geiger counter, a tool used to detect radioactivity. Like me, they were in search of a specific kind of vintage treasure: the green glow of uranium glass.

Scientists invented the Geiger counter, which measures radioactivity, while working on experiments to prove that the center of an atom contains a nucleus. Why Geiger Counters Make That Iconic ...