I got one today Ludlum 3 with the 44-9 probe. Anyhow coolest toy yet. I notice it clicks on occasion (background radiation) Some times I notice like a group of clicks all come in once in a while, is ...

I got some Geiger tubes a few days ago and built a very simple Geiger counter circuit that is powered entirely through the microphone jack (microphone connection provides a little power for things ...

An affordable Geiger counter has been launched via Kickstarter this month in the form of the Better Geiger Radiation Detector. Allowing you to own your very own Geiger counter featuring a rugged ...

"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 ...