Albert Einstein is a well known name in the history of science. He was a Jew and had to leave Germany once Hitler put into practice his policy of discrimination against the Jews. Probably this had a deep .affect on his psyche and affected his later actions.
Einstein is regarded as the greatest Physicist after Isaac Newton. His ' Special Theory of Relativity' and 'General Theory of Relativity' questioned the age old concepts of Newton. He also formulated the equation e=mc square that brought a revolutionary concept of release of energy at the square of the speed of light into play.This equation is in effect the theory of the Atomic Bomb. The speed of light is 1,86,000 miles per second an done can calculate the immense amount of energy that can be released in a thermo nuclear release of energy.
In 1939 war broke out when Hitler invaded Poland. There were reports that German scientists were experimenting in Norway on a heavy water plant to perfect a nuclear bomb. Einstein was also suffering from of a personal anguish and the fact that thousands of his compatriots were in concentration camps in Germany. His own humiliation and exile also probably weighed on his mind. Hewas scared of a German victory.
Einstein wrote two letters to President Roosevelt of the USA, letters which he regretted writing later. He pressed Roosevelt to sanction and speed up the development of the thermo nuclear device. He was clear that the device would bring untold misery to mankind, yet he strongly championed its development and use. Einstein envisaged use of the weapon against Germany and Hitler whom he hated.
Later when the bomb was used against Japan Einstein advocated disarmament. He realized his mistake in writing those letters to Roosevelt. The physical destruction of two Japanese cities appalled Einstein, yet he cannot escape culpability for the untold misery inflicted on Japan , by his letters to President Roosevelt. Later Einstein remarked that use of the Atomic bomb would result in the next war being fought with stones. People are apt to gloss of this aspect of Einstein's life, but the fact remains that Einstein must also stand in the dock for writing those letters to Roosevelt.. His open support for the Atomic bomb and its use is part of history, though not often remembered.