The Atomic Age began at 3.25 PM on December 2, 1942 – quietly, in secrecy, on a gloomy squash court under the west stands of old Stagg Field.

9 July, 1945

To:  J. R. Oppenheimer

From: N. F. Ramsey

Subject: Dangers from Accidental Detonations of Active Gadgets

I had finished breakfast and was getting ready to go to the newspaper when it happened. There was a flash from the indoor wires as if lightning had struck. I didn't hear any sound, how shall I say, the world around me turned bright white. And I was momentarily blinded as if a magnesium light had lit up in front of my eyes. Immediately after that, the blast came. I was bare from the waist up, and the blast was so intense, it felt like hundreds of needles were stabling me all at once. The blast grew large holes in the walls of the first and second floor.

                                                                             Conclusion

Remarks by President Obama and Prime Minister Abe of Japan at Hiroshima Peace Memorial

Hiroshima Peace Memorial
Hiroshima, Japan

5:45 P.M. JST
 
PRESIDENT OBAMA: Seventy-one years ago, on a bright, cloudless morning, death fell from the sky and the world was changed. A flash of light and a wall of fire destroyed a city and demonstrated that mankind possessed the means to destroy itself.