Dermot Mulroney. Biography by Rebecca Flint Marx. An actor whose versatility is matched by the unpredictability of many of his career choices, Dermot Mulroney has been appearing in films since the early 1990s. Born in Alexandria, Virginia, on October 31, 1963, Mulroney developed an early interest in acting.
The first rockets were invented in China sometime between the 9th and 13th centuries (A.D). These were black powder rockets that were essentially what we would call fireworks today, but were technically what are known as solid fuel rockets.
Leo Szilard invented the atomic bomb and reactor in 1933 as a more efficient method of transmuting elements. It took another 12 years plus a $2,000,000,000 investment by the U â¦ S to build the first bombs. American scientists created the atomic bomb as a way to end World War II with a minimum amount of bloodshed.he atomic bomb was not invented by any country, it was  invented in 1933 by Leo Szilard (he was in London at the time, so  when he patented the invention he sold it to the â¦ British Admiralty  who classified it to keep the idea away from the Nazis).