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Magnet and Ball Bearing Demonstration

submitted by: fancylad
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Magnet and Ball Bearing Demonstration. Scientists invent a machine that control tiny ball bearings in a powerful magnetic field precisely to draw 3D images.
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Hits: 16456 | Favorites: 16 | Emailed: 19 | Rating: 3.0 | Category: Science | Date: 02/19/2009
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Male, 18-29, Southern US
 1 Posts
Friday, September 4, 2009 12:42:12 AM
skf bearings

Male, 13-17, Southern US
 2 Posts
Monday, February 23, 2009 4:02:58 PM
If you don't believe what `m saying, here is the information form a listing on a video website named VideoSift:

"From BMW Museum in Munich. The kinetic sculpture consists of 714 ball bearings held up by string and moves to create some pretty cool 3D images."

there...point proved.

Male, 13-17, Southern US
 2 Posts
Monday, February 23, 2009 3:59:11 PM
Wow. Whoever thinks this is magnetic propulsion is probably suffering from Necrotizing fasciitis of the brain...(not a true medical condition). This is a kinetic sculpture, not a scientific demonstration. If you cant see due to eye problems, there are strings attached to the ALUMINUM balls and there are motors in the ceiling lifting and lowering these balls in a coordinated manner in order to create the ornate figures. If there were such a thing as a magnetic field that can stay in a perfect vertical cylinder without affecting the space around it then we would already be flying to work and every thing involving magnetic fields would be so much more advanced. A magnetic field tries to connect to other magnetic fields around it creating one large magnetic field, therefore if this sculpture was created with magnetic platforms and iron/steel/cobalt/nickel/ some other magnetic alloy, they would me moving in one large glob.

Female, 18-29, Western US
 1239 Posts
Saturday, February 21, 2009 11:58:50 AM
Are those ball-bearings made of a nonconductor that is still hard-magnetic? I also don't think that magnetic flux lines could be lined up so perfectly and -not- interfere with one another. The calculations terrify me. PLUS, if you were using the right-hand rule at all, then you`d know that setting up a field parallel to the plane of force does nothing - it has to be perpendicular. Plus, the separation of charges in the ball would cause potential voltage, which would create current, which would create a magnetic field of it`s own, and according to Lenz` Law, the ball would just kind of hover there and not move. That is, if everything else was right in the first place.

I think it`s just fishing line.

Male, 18-29, Canada
 1 Posts
Saturday, February 21, 2009 9:48:42 AM
i was there for that and there is a magnetic platform on the ground and roof so the ball bearings can be pushed (repeled) or pulled (attracted)

thanx guys

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