Gears Have Powered Technology for Millenia. Scientists Just Made a Game-Changing Improvement.

A new study reimagines the 3,000-year-old technology using fluids, avoiding the most annoying limitations of teeth-driven ...
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This touchless gear system uses fluid dynamics to transfer power and rotation without any teeth

From the chariot wheels crossing the Gobi Desert in 3,000 BCE to the intricate bronze clockwork of the Antikythera mechanism ...