Birdwatch Note Rating
2023-11-04 17:49:20 UTC - HELPFUL
Rated by Participant: 664A0309D0476E81AE515443EE556E2C47CB1D4812CF3798AE25130F1D40F735
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Original Note:
There is currently no permanent magnet able to create free energy as mentioned here. https://physics.stackexchange.com/questions/216527/do-magnets-ever-lose-their-magnetism-and-if-so-how-long-does-it-take TLDR/ELI5 : Magnets lose their "energy" when their structure change. In this case, heat will change the structure of the magnet and make it useless. Changing a magnet is not free.
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