please go into detail about it. I found it myself… Albert Einstein was unique in many ways. Not only has he been called the smartest man on earth, but he also made many discoveries. His most important discovery was his theory of relativity. In 1921, he was awarded the Nobel Prize in physics for his theory on the behavior of light. This theory was the basis for the invention of the phototube that is used in television sets. You were saying morningfox?