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Old 01-10-2019, 08:07 AM   #4479 (permalink)
All Darc
Join Date: Feb 2018
Location: Brazil
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Magnets... how thermodynamic see natural magnets, the ones that do not require electricity to keep the magnetism?

In a electromagnet the energy it's required to keep the magnetic field, but in a earth magnet it's just there constant.
If someone could find a constant magnet very easy to turn Off ande On, this could lead to the creation of a generator that don't require fuel but works in sequences of activating and deactivating magnets in sequence to spin a axis. But this would be against thermodynamics, am I right ?