#OTD in 1984, "The Philadelphia Experiment" premiered. The movie is based on an alleged experiment conducted by the U.S. Navy during WWII to make ships invisible to radar. According to conspiracy theorists, the USS Eldridge briefly vanished and the crew went mad. #timetravel pic.twitter.com/BwEhjDJ6gV

— U.S. Naval Institute (@NavalInstitute) August 3, 2019