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 ...

^{4}\textrm{He}\) When a radioactive atom emits an alpha particle the mass number decreases by four and the atomic number drops by two. Here is the equation for the alpha decay of radon-219 into ...

JON CHASE:'Nuclear weapons ... Pupils could explore decay chains and complete equations to show radioactive decay processes. They could also plot graphs of given data to calculate half-life.

The carbon-14 diamond battery has the potential to power devices for thousands of years, revolutionizing energy storage.