Most people interpret radiation as a bad thing—but it isn’t always. In fact, radiation is a very normal phenomenon. For now, let’s just say that radiation is when an object produces energy. When a ...

Radioactive sources contain radioactive material of a particular radionuclide (an unstable form of an element emitting radiation), which can vary based on the application for which the source was ...

A new map offers a new perspective on the city, revealing the steady, ever-present natural radiation emerging from the ground ...

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 ...

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 ...

Potassium iodide (KI) is a type of iodine a person may receive during a radiation emergency. It works by preventing the thyroid from absorbing a type of radioactive material. KI is a type of medical ...