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 ...

The Trump administration is considering tighter safety rules on the weak radiations of cellphones even as it pursues looser ...

The element radium can be found in extremely tiny amounts in the Earth’s crust and oceans, and in its pure form it is a soft silvery metal. To an untrained eye, a small piece of radium may look like a ...

Cancer-busting particle beams have been caught in the act. Particle beams can provide a blast of destructive energy directly to tumors — assuming the beam is in the right place. Now, using a ...