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this day in the yesteryear: Wilhelm Röntgen Discovers X-Rays (1895)

Wilhelm Röntgen Discovers X-Rays (1895)

In 1895, Röntgen, a German physicist, discovered rays that did not exhibit properties such as reflection or refraction. Because of their mysterious nature, he called them X-rays. 59 more words

today's birthday: Alfred Nobel (1833)

Alfred Nobel (1833)

Nobel was a Swedish chemist and engineer who invented dynamite, the smokeless powder Ballistite, and an explosive gelatin more powerful than dynamite. 105 more words