7 ore 11 min, 19 lugl 1939 anni - Szilard and Wigner get Einstein to write a letter to Roosevelt to warn him about the discovery of fission in Berlin. Einstein also tells Roosevelt that Germany appears to be hoarding their stores of uranium, a clue that they could already be developing a bomb.
Aggiunto al nastro di tempo:
Data:
7 ore 11 min, 19 lugl 1939 anni
Adesso
~ 84 years ago
