I think it should spin for a very long time in a vaccuum. The problem would be getting it to spin though, since i set it in motion by blowing air to one side using a straw.
In a vacuum you'd need to speed it up using some coils on the outside of the jar, and ramping current through those just like you would rotate a stepper motor.
@vmelkon - the big magnet on top is what pulls the little magnets up against gravity. The two bismuth discs repel the small magnet, so it doesnt shoot up or drop down.
I think it should spin for a very long time in a vaccuum. The problem would be getting it to spin though, since i set it in motion by blowing air to one side using a straw.
In a vacuum you'd need to speed it up using some coils on the outside of the jar, and ramping current through those just like you would rotate a stepper motor.
007Benm 1 year ago
Love to see it in a vacuum :)
1BustedMyth 1 year ago
What happens if you don't have a large magnet above the construction. What is the large magnet for?
vmelkon 1 year ago
@vmelkon - the big magnet on top is what pulls the little magnets up against gravity. The two bismuth discs repel the small magnet, so it doesnt shoot up or drop down.
007Benm 1 year ago