To this day, crazy inventors and adventurers have been trying to build a perpetual motion machine. Some even manage to sell their inventions to those who are eager to pay for a device, that can not exist, according to science. There are thousands of projects and models of such a machine. We picked 7 of our favourites.
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Негізгі бет Ғылым және технология SEVEN PERPETUAL MOTION MACHINES
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