Scaling Maxwell's Demon Experiment: Macro-Level Rigid Ball Suspension

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lostminty
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I had the concept of scaling up Maxwells' demon experiment to a marco scale.

Replacing molecules of gas with light, rigid, balls. Perhaps coated in magnets with varying poles so they never touch (non-interacting). Would suspend them in a thin fluid with neutral buoyancy.
 
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perhaps you could make a spherical magnet with all the poles passing through its centre.
 
Wouldn't work. You would not be able to keep the balls in motion.
 
Thought so. cheers.