I mean, I always used to fancy as a kid why can’t we use magnets to keep a fan going in circles? Why can”t we create a perpetual machine using magnets? Even if the magnets get worn out, we can still use them for considerable time. What is the science behind it that makes it impossible?
In: Engineering
Because it is not possible to arrange permanent magnets in a way that would create a continous spinning. Even if you arrange the magnets in a circular way, then it will just move for a moment, until it stops.
For continous rotations you require changing magnets. So basically you need to switch magnets on or off or move them around. However that requires energy from the outside and thats basically how electric motors work.
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