What do a nuclear bomb, a mummy, a counterfeit bill, and a broken arm have in common? The answer is X-ray technology. Most people are probably familiar with the X-rays used in medicine, which can show organs within a body. This book explores the history of radiography and how it came to be one of the most useful tools in medicine. It also delves into the limits of radiography and the effects of ionizing radiation on living things. It further investigates many other uses of X-rays, including nuclear weaponry and counterfeit detection.