The best explanation for the reason why the UNited States decided to target Hiroshima was it was geographically suited for bombing and evaluating the results of the bombing. There were hoping that this bomb would finally end the war.

Truman stated that his decision to drop the bomb was purely military. A Normandy-type amphibious landing would have cost an estimated million casualties. Truman believed that the bombs saved Japanese lives as well. Prolonging the war was not an option for the President.

Supporters of the bombings generally believe that they prevented an invasion of the Japanese mainland, saving more lives than they took by doing so. Opponents contend, among other arguments, that the bombings were unnecessary to win the war or that they constituted a war crime or genocide.

A nuclear weapon detonation in or near a populated area would – as a result of the blast wave, intense heat, and radiation and radioactive fallout – cause massive death and destruction, trigger large-scale displacement[6] and cause long-term harm to human health and well-being, as well as long-term damage to the …

First, I checked with Hiroshima Peace Memorial Museum and found a reference which suggested that permitting the gravely wounded to drink water could result in releasing their tension and hastening their death. A soldier then surprised him by saying, “If you give water to the victims, they’ll die.”

Both atomic bombs and hydrogen bombs are kinds of nuclear bombs, meaning that the energy comes from nuclear reactions. The big difference is that atomic bombs use nuclear fission, which splits a bigger atom into two smaller ones, to create their energy.

It would annihilate a gram of matter and release 180 trillion Joules (50 million kWh) of energy. If allowed to contact regular matter in an uncontrolled manner, the result would be an explosion equivalent to a 43 kiloton nuclear bomb, but with virtually no radioactive fallout.

Antimatter would indeed ‘explode’ if it was stored in air and in a matter container. In fact, that’s what matter and antimatter turn into when they annihilate. A magnetic bottle can be used to suspend anti-matter inside a matter vacuum bottle wall so that they never come in contact with each other.

Given that there is about 700 times as much normal matter as there are black holes, this can’t be where the antimatter is hiding; antimatter didn’t form black holes. But we had another way of knowing that: the laws of physics have symmetries between the way matter and antimatter are allowed to behave.

PHYSICISTS have made a key measurement of anti-atoms, and found that they look just like atoms. Antimatter particles are the same as matter particles, but have the opposite electrical charge. …

Antimatter particles are almost identical to their matter counterparts except that they carry the opposite charge and spin. When antimatter meets matter, they immediately annihilate into energy.