Wired: Nuclear Blasts Show Terrifying Power

From Wired’s Nuclear History Gallery.

Above:

Operation Upshot-Knothole, conducted at the Nevada Proving Ground
between March 17 and June 4, 1953, consisted of 11 atmospheric tests:
three airdrops, seven tower tests and one airburst. Upshot-Knothole
involved the testing of new theories, using both fission and fusion
devices.

House No. 1, located 3,500 feet from ground zero, was
completely destroyed on the first day of testing. The elapsed time from
the first picture to the last was 2⅔ seconds. The camera was completely
enclosed in a 2-inch lead sheath as a protection against radiation. The
only source of light was that from the detonation. Frame No. 1 (upper
left) shows the house lighted by the blast. Frame No. 2 (upper right)
shows the house on fire.

Courtesy National Nuclear Security Administration/Nevada Site Office