Ball bearings in a strong magnet field can make shapes - video

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Ball bearings in a strong magnet field can make shapes - video

Scientists invent a machine that controls tiny ball bearings in a powerful magnetic field to precisely draw 3D images.

This is amazing, each ball bearing must be manipulated by its own magnetic force .... how?

I suspect there must be on the floor, or ceiling, some way of transmitting a field directly up, with one field for each ball bearing. Then you have to change the strength of that field to move each ball.



magnetism-ball-bearings.jpg - 11.18kb
By netchicken: posted on 21-2-2009








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