File:Operation Crossroads Baker Edit.jpg

"Baker Shot", part of Operation Crossroads, a nuclear test by the United States at Bikini Atoll in 1946

Original: United States Department of Defense (either the U.S. Army or the U.S. Navy) Derivative work: Victorrocha (talk) - Operation_Crossroads_Baker_(wide).jpg The "Baker" explosion, part of Operation Crossroads, a nuclear weapon test by the United States military at Bikini Atoll, Micronesia, on 25 July 1946. The wider, exterior cloud is actually just a condensation cloud caused by the Wilson chamber effect, and was very brief. There was no classic mushroom cloud rising to the stratosphere, but inside the condensation cloud the top of the water geyser formed a mushroom-like head called the cauliflower, which fell back into the lagoon (compare with this image, a photo taken slightly later, after the condensation cloud had cleared). The water released by the explosion was highly radioactive and contaminated many of the ships that were set up near it. Some were otherwise undamaged and sent to Hunter's Point in San Francisco, California, United States, for decontamination. Those which could not be decontaminated were sunk a number of miles off the coast of San Francisco.

Public Domain File:Operation Crossroads Baker Edit.jpg Created: 24 July 1946 Location: 11° 35′ 60″ N, 165° 30′ 0″ E