Atomic Bomb Predicted Before It's Time
Written literature that predated the atomic bomb made references to man creating a weapon that could set the sky on fire.
H.G. Wells book The Time Machine written in 1895 talked about the surface of the Earth being burned by man made fire. He later wrote The World Set Free in 1914 and it clearly describes the atomic bomb.
When Did A Nuclear Bomb First Appear?
The Trinity nuclear test of the first atomic bomb was conducted on July 16, 1945. What is the date of the film that first featured a destructive weapon of on this kind of scale, and did that film predate the Trinity test?
I'm looking for the answer with the earliest film showing or discussing a bomb that can destroy a city.