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Collection: Astronic Tourbillon

1964, Pyotr Ufimtsev, a Soviet mathematician showed that the strength of the radar return from an object is related to its edge configuration not its size Considering certain angle of edge and certain shape together with gravity
1974, The legendary Stealth F-117 Nighthawk was developed by DARPA of the U.S. Department of Defense to challenge the radar signal and gravity
1801, French-Swiss watchmaster Abraham-Louis Breguet invented tourbillon to challenge the gravity
F-117 and Tourbillon are the perfect combination of precise technology, engineering and mechanics
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