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Gravity, a simple heat engine on the scale of the universe?
Gravity could be a manifestation of thermodynamics, the science of heat and energy. This is the idea explored by researchers at Imperial College London, who propose that it acts as a heat ...
A former NASA engineer claims a new engine can beat gravity without fuel. Is it a breakthrough or just a classic physics trap?
Air engines are a common occurrence here on Hackaday. They’re relatively novel and reasonably easy to 3D print without requiring any fluids or supporting machinery. For example, [Tom Stanton] took a ...
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