At this time the US builds no nuclear bombs. A small number of existing bombs are refurbished as needed.
For the first time, in the United States, during the WW II.
The only time the US ever used Atomic Bombs was during World War 2 when the first atomic bombs were used. Nowadays, the atomic bombs are kept underground. Nuclear missiles are ready to use in the case of a nuclear warhead being launched at the US by an enemy or unknown foe. There have been thousands of nuclear warheads disabled since the Cold War ended.
Russia has roughly 3500 nuclear warheads at the time of this writing and the number is slowly falling.
H. G. Wells in his 1914 novel "The World Set Free" was the first to publish on the use of nuclear bombs in a war, he was the first to use the term atomic bomb to refer to bombs that obtain their energy from inside the atom (rather then from chemical reactions between atoms/molecules).Note: H. G. Wells atomic bombs were not based on using nuclear fission or nuclear fusion (as the real bombs are), as the nucleus of the atom had not yet been discovered and neither nuclear fission nor nuclear fusion had been discovered. As the only method of releasing the energy of the atom known at the time was radioactive decay, H. G. Wells based his atomic bombs (and atomic engines) on a hypothetical method of "accelerated radioactive decay".
the idea of nuclear weapons hadn't been investigated at the time of ww1
no
WW2.
At this time Russia.
It is difficult to determine the exact number of nuclear bombs it would take to kill everyone in the world, as many factors such as location and size of the bombs would come into play. However, it is estimated that a few hundred strategically placed nuclear bombs could have catastrophic global consequences.
Yes, two nuclear bombs were used in warfare during World War II. The United States dropped atomic bombs on the Japanese cities of Hiroshima and Nagasaki in August 1945. It remains the only time nuclear weapons have been used in warfare to date.
the americans thort that japan would drop a nuclear bombon them