Watson-Watt, Sir Robert Alexander (1892-1973), a British physicist. He developed the first successful radar system, which he demonstrated in 1935. It grew out of a radiolocator device, used to track thunderstorms, that he built shortly after World War I, while assigned to the Royal Meteorological Office's Radio Research Station. Watson-Watt was born in Brechin, Scotland. He was knighted in 1942.
Albert Einstein was a pretty smart guy. When you look up the word "genius" in the dictionary, so the saying goes, it's a pretty safe bet you'll see Einstein's mug. Think you’re smart enough to take on a quiz about the famed thinker?
He is famous for a phrase he never said, for wearing turtlenecks and for hosting the original 'Cosmos' TV series. As enthusiastic about the stars as he was about marijuana, Carl Sagan led a very surprising life. Here are 10 cool facts.