Gallery: World’s Smallest Working Heat Engine is the Size of a Hair Fol...


German physicists have just announced the creation of the world’s smallest heat engine! Research teams from the University of Stuttgart and the Max Planck Institute for Intelligent Systems have joined forces to build a super tiny laser powered engine that is only a few micrometers wide — that’s the size of a human hair! With heat and steam engines traditionally powering cars, boats, trains, and planes, this could be a huge leap towards major, clean transportation improvements.

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