Which Geiger counter is best? If you want to monitor radiation levels from a specific source, you need a reliable Geiger counter. This tool can warn you when there is radiation, as well as measure it ...

From the Mayo Clinic came a breathless story of a hunt for three lost tubes of almost priceless radium. The tiny tubes, an inch and a quarter long, had been thrown out with a trayful of dressings. The ...

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 ...