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zoobyshoe
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What formulas?Visaliasteve said:Notice the mathematical formulas for gravity and magnetism are similar.
What formulas?Visaliasteve said:Notice the mathematical formulas for gravity and magnetism are similar.
There is no stored energy in a permanent magnet. Poorer quality magnetic materials become demagnetized with use because the magnetic domains don't hold the magnetized positions under stress as well as the newer magnetic materials do. Given the same initial magnetization, old fashioned hardened steel will lose it's magnetism relatively quickly with use, but the average ferro-ceramic magnet, as in an audio speaker, a newer, better material, will stay magnetized indefinitely despite constant use. In the case of the former no energy is being expended by the magnet with each use, rather, the orientation of the magnetic fields of its "domains" are all going out of alignment. In the latter, better, material the orientation is not subject to slippage like this.junglebeast said:Actually permanent magnets can do work and then do have stored energy.