If you are concerned about radiation levels where you live, you are probably interested in using a Geiger counter to measure them. These videos will explain how to use a Geiger counter to measure radioactivity. Learn the difference between alpha, beta and gamma particles.
Want to master Microsoft Excel and take your work-from-home job prospects to the next level? Jump-start your career with our Premium A-to-Z Microsoft Excel Training Bundle from the new Gadget Hacks Shop and get lifetime access to more than 40 hours of Basic to Advanced instruction on functions, formula, tools, and more.