Well, it was usually considered the official start.
It ended WWII & the world entered the "Atomic Age."
Einstein did not invent the atomic bomb, Leo Szilard did.
No, they are not the same. The atomic bomb was a specific weapon developed during World War II, while the nuclear age refers to the period starting from when nuclear technology and weapons became a significant part of global affairs, which continued past the use of the atomic bomb.
The atomic bomb brought man into the atomic age and the cold war.
Probably the atomic bomb
Indeed it was a new weapon. It brought us to the atomic/space age.
Besides ending WWII. The world had entered the atomic age.
On July 16th 1945, the US tested their atomic bomb called Trinity in the Jornada Del Muerto desert in New Mexico. This test often marks the beginning of the Atomic Age, as the Trinity tests were followed by the atomic bomb in Nagaski, Japan in August 1945.
By the use of the atomic bomb. This brought man into the atomic age.
One thing is that since the age of atomic weapons there has not been any more world wars.
None of the men involved with making "the bomb" were happy about it. They, more than any other living human being knew what doors they had opened (the atomic age).
People were optimistic at the start of the Atomic age. They thought all power generators would be atomic from then on.