Fact check
Is it true: The Philadelphia Experiment?
No — this has been debunked.
USS Eldridge's deck logs (publicly accessible via the US National Archives) show the ship was in the Brooklyn Navy Yard in early October 1943, then transferred to Bermuda and the Caribbean — never in Philadelphia during the alleged period. Original source Carl Allen (writing as "Carlos Allende") was an unreliable narrator whose letters mixed confusion about Navy degaussing operations (actual ship-electromagnetic-signature reduction experiments) with science fiction from Charles Fort's writings. Former Eldridge crew members publicly denied any invisibility experiment in multiple 1990s reunions.
The claim
The claim that the US Navy conducted an October 1943 experiment at the Philadelphia Naval Shipyard that made the destroyer USS Eldridge temporarily invisible and teleported it to Norfolk, Virginia — w
Key evidence
Carl Allen letters claimed invisibility experiment
USS Eldridge deck logs: not in Philadelphia
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