The First X-Ray, 1901, Photograph Keychain

In 1901 Wilhelm Konrad Roentgen was the first recipient of the Nobel Prize for Physics, and he truly deserves his place in history because his discovery revolutionized the medical world. A series of experiments helped him notice that barium platinocyanide emits a fluorescent glow. Combining his observation with a photographic plate and his wife's hand, he made the first X-ray photo, and thus, made it possible to look inside the human body without surgical intervention.