29
/de/
de
AIzaSyAYiBZKx7MnpbEhh9jyipgxe19OcubqV5w
April 1, 2024
1861459
152454
2

1 Jan 1940 Jahr - 1940

Beschreibung:

May 3 - German troops occupy Norway, seizing the world's only heavy-water production plant at Vemork.
May 19 - Frisch and Rudolf Peierls submit a memorandum to the British government estimating the critical mass of uranium 235 needed for an atomic bomb and urging a bomb research project.
June 3 - German scientists fail to observe neutron multiplication in the reactor in Hamburg.
June 15 - Using the Berkeley cyclotron, Philip Abelson and Edwin McMillan demonstrate that neutrons captured by uranium 238 lead to the creation of elements 93 and 94, neptunium and plutonium.

Zugefügt zum Band der Zeit:

17 Okt 2018
1
0
626
atomic and nuclear physics

Datum:

1 Jan 1940 Jahr
Jetzt
~ 84 years ago

Abbildungen:

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