Holding it over the magnets as they whiz ... but this experiment shows that a spinning disc of magnets can create heat directly. Optimizing this should prove interesting. One thing we’d suggest ...

Once the magnet cools again, it should be at roughly the same strength, though prolonged heat can permanently reduce the strength. The next level of damage is irreversible loss, which happens ...

All of these systems are relying on an active magnetic regenerator (AMR) concept, where a heat transfer fluid is actively pumped through a bed of magnetocaloric material in order to transfer ...