Dirac Belt Trick Mechanism cleverly avoids twisting wire

[mathsquid]

This is an interesting video I ran across. A cube is turned continuously, but the string attached to it doesn't get twisted.



More info: https://en.wikipedia.org/wiki/Plate_trick

[Circlotron]

I wonder if you could somehow use that principle to construct a homopolar disc generator or motor that doesn't need slip rings?

[domika]

this is a good project

[T3sl4co1l]

I wonder if you could somehow use that principle to construct a homopolar disc generator or motor that doesn't need slip rings?

Hmm, perhaps.  But is the solution worse than the problem -- how are you going to get all that current out?  Surely not through cables, the amount of flex requires a lot of slack and discourages large amounts of it.

Somewhat related mechanism:



Tim