Atomic bomb

The atomic bomb was invented by Robert Oppenheimer in the 20th century. It was capable of great violence. (PROSE: Come Friendly Bombs...)

As Butler professed in an indoctrination film shown to Sarah Jane Smith, humanity was capable, with the development of the atomic bomb, of destroying the whole planet very quickly in a nuclear war. (TV: Invasion of the Dinosaurs)

According to the Third Doctor, if Wenley Moor nuclear research facility were not able to stabilise in time for power outages caused by the Silurians, their nuclear reactor could potentially "turn into a massive atomic bomb". (TV: Doctor Who and the Silurians)