On Sat, Nov 12, 2011 at 6:59 PM, Peter Heckert <[email protected]> wrote:
>> The Perendev motor operates in repulsion mode. Magnets in repulsion >> degrade over time; so, assuming it did work as the videos imply, it >> would not last. > > Im not an magnet expert, but I think the degradation of modern neodyme > magnets is low or almost zero. If you take a magnet and hit it with a hammer, you will degrade the magnetic force. Constant abuse of the domain alignment degrades the magnet. However, magnets in attraction reinforce the magnet domain alignment. I have had years of experience with magnets, especially Neodymium Iron Boron. Some on the list might be aware of this. ;-) T
