Philadelphia Experiment
Alleged 1943 U.S. Navy experiment claimed to have rendered the destroyer USS Eldridge invisible or teleported between Philadelphia and Norfolk, based entirely on unverified letters and lacking any naval documentation.
The Philadelphia Experiment story originated with letters sent to astronomer and UFO researcher Morris K. Jessup in 1955 by a man identifying himself as Carlos Miguel Allende (also Carl Allen). Allende claimed to have witnessed a secret Navy experiment in October 1943 at the Philadelphia Naval Shipyard in which the destroyer escort USS Eldridge was rendered invisible and briefly teleported to Norfolk, Virginia, before returning to Philadelphia.
Allende described the alleged experiment as an application of Einstein’s unified field theory, claiming that powerful electromagnetic fields generated around the ship caused it to vanish from sight and reappear hundreds of miles away. He alleged that crew members were fused into the ship’s hull, suffered severe psychological trauma, or disappeared entirely as side effects of the teleportation process.
The story gained wider circulation through Charles Berlitz and William Moore’s 1979 book “The Philadelphia Experiment,” which elaborated on Allende’s claims and connected them to broader theories about secret government research into electromagnetic warfare and dimensional manipulation. The book inspired a 1984 science fiction film that further popularized the story in popular culture.
Naval records and ship logs definitively contradict the Philadelphia Experiment claims. The USS Eldridge was not at the Philadelphia Naval Shipyard in October 1943 but was conducting sea trials and convoy escort duties in the Atlantic. The ship’s complete wartime service record is documented and contains no references to experimental programs or unusual incidents matching Allende’s descriptions.
The U.S. Navy has repeatedly denied that any such experiment took place, explaining that the story may have originated from confusion about actual naval research into degaussing (demagnetizing ship hulls to protect against magnetic mines) and radar countermeasures. These legitimate programs involved electromagnetic equipment that could have inspired misunderstood observations or rumors.
Carlos Allende later admitted to fabricating elements of his story and acknowledged that some details were products of his imagination. However, the Philadelphia Experiment legend persisted in conspiracy culture as an example of alleged secret government experimentation with exotic physics, despite the complete absence of supporting evidence and clear documentation of its origins as a hoax.
Bibliography:
- Jessup, Morris K. The Case for the UFO. Citadel Press, 1955.
- Berlitz, Charles and William L. Moore. The Philadelphia Experiment. Grosset & Dunlap, 1979.
- U.S. Navy official statements and ship logs, various dates.