There's a little red ball hanging over this display that shows the size and position of the bomb itself 1/10th second after detonation. It's pretty horrifying/amazing. I didn't know that it sent off in midair until I saw this.
The more you know.
Interestingly enough, the atomic bomb SAVED people, because Hirohito would've drafted whatever innocent civilian he could find into "volunteer" (kamikaze) pilots for the air force. Even if they refuse, they'd be beheaded by imperial soldiers.
The more you know.