Nuclear explosion photographed by rapatronic camera less than 1 millisecond after detonation. From the Tumbler-Snapper test series in Nevada, 1952. The fireball is about 20 meters in diameter in this shot. The spikes at the bottom of the fireball is known as the rope trick effect.

The rapatronic camera is a high-speed camera capable of recording a still image with an exposure time as brief as 10 nanoseconds (billionths of a second).