If you were trying to hide some kryptonite from Superman's X-ray vision, which element should you use to build the box?
Answer Lead
Lead is one of the most popular materials for blocking X-rays and gamma rays. It's a dense material, meaning it has a large number of atoms packed tightly together. When radiation particles try to pass through this barrier, they're blocked by protons and electrons.
Asked by Brian Edwards · Last updated 5 years ago · 5.7K views · SOURCE
