he did not build the atomic bomb
5 billion
He did not; he was not primarily an engineer. He developed the theories that made the development of an atomic weapon possible.
His theory about atomic fusion helped in the development of the bomb. He also convinced the president to develop the research in it. In the last 25 years of his life he questioned himself concerning the use and development of the bomb and was unhappy that he had helped build the theory and foundation of atomic theory.
The atomic bomb is an artefact, and so an invention. Maybe you meant to ask who invented the atomic bomb ?
he did not build the atomic bomb
the Nazi didn't build the atomic bomb the Americans did....
To defend against a possible Nazi atomic bomb!
1945
No, they designed but did not build them.
the first atomic bomb.......................................
the Manhattan project
Yes, that was its codename.
no
Manhattan Project
It takes very little time to build an atomic bomb, once a country has the necessary industrial infrastructure to produce the fissile material.
No, they never were able to complete it. They were trying but never had the capability to build it.