Research in the US and Britain started as early as 1939. Real work started when the US Army was entrusted organising the Manhattan Project, starting in 1942. The first test of a bomb, code named Trinity, was 16 July 1945.
1945 (not including testing)
Although before the world war II the America's already have the knowledge on how to win the war.Because of Einstein and his equation E=mc² the USA have been created the atomic bomb.But the truth is they inveted the atomic bomb in year 1945.
The US made atomic bombs from 1945 to 1992.
1974
The first atomic bomb didn't explode in China, it exploded in New Mexico, USA July 25, 1945. I'm 95-99% sure New Mexico had the first one.
20019
1942
1945
1945
The first atomic bomb was made August 1945. My ? to you is," Why did they even start making those atomic bomb anyway?
1945
Japan did not invent the atom bomb. The atomic bomb was first created in the United States in the summer of 1945. The U.S. then used atomic bombs against Japan on august 6 and August 9 of that year. Japan does not have nor did it ever have nuclear weapons.
1945 (not including testing)
The Soviets tested their first A-Bomb in 1949; one year before the start of the Korean War (1950-1953).
Never! Leo Szilard invented the atomic bomb in 1933.
1945
Although before the world war II the America's already have the knowledge on how to win the war.Because of Einstein and his equation E=mc² the USA have been created the atomic bomb.But the truth is they inveted the atomic bomb in year 1945.