VO-BB - 20 YEARS OLD!

Eddie Eagle · M&M Joined: 23 Apr 2008 Posts: 2393

An old friend of mine in Kentucky sent me this one. Liquid Metal

Deirdre · Posted: Mon Jun 22, 2009 12:16 pm Post subject:

Jeepers— what is it?
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Eddie Eagle · M&M Joined: 23 Apr 2008 Posts: 2393

Liquid Metal. Real liquid metal.

Frank F · Posted: Mon Jun 22, 2009 5:32 pm Post subject:

This is your brain, this is your brain doing a voice over. This is Liquid Metal...

F2
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bobsouer · Posted: Mon Jun 22, 2009 5:58 pm Post subject:

Fascinating.
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Deirdre · Posted: Mon Jun 22, 2009 6:09 pm Post subject:

Liquid metal is liquid.
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Zach · Posted: Mon Jun 22, 2009 9:17 pm Post subject:

It is actually ferrofluid.

You probably have some in your studio.

To quote wikipedia:

Ferrofluids are commonly used in loudspeakers to remove heat from the voice coil, and to passively damp the movement of the cone. They reside in what would normally be the air gap around the voice coil, held in place by the speaker's magnet. Since ferrofluids are paramagnetic, they obey Curie's law, thus become less magnetic at higher temperatures. A strong magnet placed near the voice coil (which produces heat) will attract cold ferrofluid more than hot ferrofluid thus forcing the heated ferrofluid away from the electric voice coil and toward a heat sink. This is an efficient cooling method which requires no additional energy input. [3]

More fun with ferrofluid on Youtube.

http://www.youtube.com/results?search_type=&search_query=ferrofluid&aq=f

Zach