The first fission of uranium is from 1939: Otto Hahn, Lise Meitner, Fritz Strassmann.
Otto Hahn, Fritz Strassmann and Lise Meitner in December 1938.
Otto Hahn, Fritz Strassmann and Lise Meitner in 1939; I consider that the expression father of the atomic bomb is not adequate.
Nuclear fission
By neutrons; bu the cross specific area is very small for thermal neutrons.
Uranium-235 has 143 neutrons and uranium-238 has 146 neutrons.
Otto Hahn, Fritz Strassmann and Lise Meitner in December 1938.
Otto Hahn, Fritz Strassmann and Lise Meitner in 1939; I consider that the expression father of the atomic bomb is not adequate.
Lise Meitner, the woman who splitted the atom :) ------- 1. Lise Meitner worked with Otto Hahn and Fritz Strassmann. 2. Lise Meitner was not of German origin, but Jewish. 3. Any link between these three laboratory scientists and the use of the atomic bomb. They don't contributed to the Manhattan Project ar to another German weapons project. 4. The German atomic bomb was only a dream, not a reality.
uranium
The answer is neutron. :)
Neutrons
Neutrons
Yes, by nuclear fission.
They split the uranium atom.
The nuclear fission of uranium is a reaction with neutrons.
Nuclear fission (splitting the atom) was the fundamental discovery leading to the Manhattan Project. Although Lise Meitner and Otto Frisch are generally credited with the discovery, other physicists that played an important part were Ida Noddack, Otto Hahn and Fritz Strassman.
Uranium