The True Story of The Philadelphia Experiment

The Philadelphia Experiment is an alleged military experiment supposed to have been carried out by the U.S. Navy at the Philadelphia Naval Shipyard in Philadelphia, Pennsylvania, sometime around October 28, 1943. The U.S. Navy destroyer escort USS Eldridge (DE-173) was claimed to have been rendered invisible (or “cloaked”) to enemy devices.

The story first appeared in 1955, in letters of unknown origin sent to a writer and astronomer, Morris K. Jessup.

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