Einstein's letter had an effect, with Roosevelt creating the Advisory ... Project - the secret US committee that developed the atomic bombs that were dropped on the Japanese cities of Hiroshima ...

Out of fear the Nazis would develop and use a nuclear weapon, Einstein wrote the letter that convinced President Franklin D. Roosevelt to launch an atomic-bomb program. He later regretted it ...

When it comes to the actual blueprint for and building of the atomic bomb, Einstein ... signed a letter (written by physicist Leo Szilard) to the U.S. President Franklin D. Roosevelt in 1939.

On August 2, 1939, they drafted a letter, signed by Einstein, and addressed to President Franklin Roosevelt, warning of the potential of atomic bombs and urging the United States, not yet a ...

74 years ago today, in 1939, Albert Einstein wrote a remarkable letter to ... extremely powerful bombs of a new type may thus be constructed," he wrote. Einstein encourages Roosevelt to strengthen ...

When you hear the name Albert Einstein ... He also wrote a famous letter to President Franklin D. Roosevelt, warning him that Germany might build an atomic bomb and urging nuclear research.

Their “Memorandum on the Properties of a Radioactive ‘Super-Bomb‘” was more successful than Einstein’s letter to Roosevelt. It led to the initiation of the British bomb project ...