| The Breakroom > The Water Cooler |
| Is Copper Magnetic? |
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| Bluechip:
Whilst we are faffing about with magnets .... Prof. Eric Laithwaite ... once went to one of his lectures .. much more amusing for real ... :) Good bloke ... Dave |
| z3t4:
--- Quote from: Bluechip on November 28, 2013, 04:13:12 PM --- Prof. Eric Laithwaite ...Good bloke ... Dave --- End quote --- Eric Laithwaite: absolute freakin' legend! :beer: |
| 75Plus:
I became aware of the reaction of copper in a magnetic field about 50 years ago. I had a precision beam scale that was dampened by a copper vane moving between two fixed magnets. It was almost as efficient as a hydraulically operated damper. |
| Dawai:
Yes, slightly.. spinning a magnet close to a copper loop will heat it? Water is slightly also magnetic. Diamagnetic? I think the word is? Water can exhibit anti-gravity "magnetic levitation" in the Lord Kelvins thunderstorm experiment. The droplets "orbit" the coils as they transfer the electrical charge simulating anti-gravity. To really see-learn some neat magnetic things, Magnetic universe, Leed Skalin?? Builder of Coral castle in Florida. |
| TLGriff:
I used eddy current theory to build a magnetic damper for a scriber blade in a manufacturing fixture at work. The blade was oscillating as it was dragged across a plastic surface causing skips in the scribed line and the damper eliminated the oscillations. The damper was an aluminum disc attached to the scriber with a circular array of neodymium magnets in close proximity to it. As the magnets moved relative to the aluminum disc, they magnetized it, effectively damping the movement. Tom |
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