GAMMA RAYS

• Gamma rays are given off by stars and by some radioactive substances.
• Gamma rays are extremely high frequency waves, and can carry a large amount of energy.
• Gamma rays pass through most materials, and are quite difficult to stop - you need lead or concrete in order to block them out.
• Paul Ulrich Villard was a chemist that discovered gamma rays in 1900.
• Marie Currie and Pierre Currie were the couple that helped Paul Ulrich Villard.