Gunslinger Doc Holliday dies, the X-ray is discovered by accident, John F. Kennedy is elected president, the Florida recount begins, and the "Guitar Hero" craze is born, all on this day.
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Public domain
1895: While experimenting with electricity, German physicist Wilhelm Röntgen discovers the X-ray. Nearly two weeks after his discovery, he would take the very first picture using X-rays of his wife's hand. The achievement would earn him the first Nobel Prize in Physics in 1901.