However, such bombs might very well prove to be too heavy for transportation by air. The United States has only very poor ores of uranium in moderate quantities.
There is some good ore in Canada and the former Czechoslovakia, while the most important source of uranium is Belgian Congo. In view of this situation you may think it desirable to have some permanent contact maintained between the Administration and the group of physicists working on chain reactions in America. One possible way of achieving this might be for you to entrust with this task a person who has your confidence and who could perhaps serve in an inofficial capacity.
His task might comprise the following:. I understand that Germany has actually stopped the sale of uranium from the Czechoslovakian mines which she has taken over. For you. World globe An icon of the world globe, indicating different international options. Get the Insider App. Click here to learn more. A leading-edge research firm focused on digital transformation. Good Subscriber Account active since Shortcuts. Account icon An icon in the shape of a person's head and shoulders.
It often indicates a user profile. Log out. Others seek the ever-elusive American dream. But first, they are held, sometimes in appalling conditions, until processed by immigration authorities. This is not the U. As the Nazis seize power and stamp down their jackboots on Jewish communities and left-leaning intellectuals throughout Europe, many flee to the United States.
One of the new arrivals is Albert Einstein, who arrived in and several years later became a naturalized citizen, taking the oath of allegiance in Trenton, N. Einstein, whose special theory of relativity had been published in , had achieved international fame, even if — as he quipped — no one really understood why.
He was not the only refugee scientist to land on American shores, but his influence dwarfed the others. As war approached, Einstein, a lifelong pacifist, did something out of character and out of necessity.
On Aug. Einstein urged the United States to stockpile uranium ore and begin work on its own atomic weapons. No one else signed it. No one else had to. Thus the Manhattan Project was born.
Six years later, on two fateful days in August , the bombs known as Little Man and Fat Boy were dropped on Hiroshima and Nagasaki , Japan — on soldiers, sailors, women and children alike. These detonations accelerated the end of the Second World War, but presaged the Cold War that dominated the latter half of the 20th century.
Despite helping to spur Roosevelt into action, Einstein never worked directly on the bomb project. In the end, Einstein played only a small role in the Manhattan Project. Einstein was happy to comply. Drawing on his old expertise in osmosis and diffusion, he worked for two days on a process of gaseous diffusion in which uranium was converted into a gas and forced through filters.
In order for Einstein to be more useful, they said, he should be given more information about how the isotope separation fit in with other parts of the bomb-making challenge. Bush refused. Thus the scientist who had explained the need for a bomb-making project was considered too risky to be told about it.
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