forget it Jouni. Intellectually, the wolf of CoE will always win. (Why do I waste my time?) Harry
On Thu, Sep 6, 2012 at 12:05 PM, Jouni Valkonen <jounivalko...@gmail.com> wrote: > Stored energy in magnetic field for neodymium magnet is around 40-50 MGOe. > As one MGOe is 7960 J / m³, this means that energy stored in 1 cm³ neodymium > magnet is 360 millijoules. That is, it is negligible for all practical > purposes and certainly this field energy is not the source why permanent > magnets can do work. > > —Jouni > > http://en.wikipedia.org/wiki/Oersted > > On 6 September 2012 19:10, Abd ul-Rahman Lomax <a...@lomaxdesign.com> wrote: >> >> At 11:46 PM 9/5/2012, mix...@bigpond.com wrote: >>> >>> In reply to Jouni Valkonen's message of Wed, 5 Sep 2012 20:27:51 +0300: >>> Hi, >>> [snip] >>> >>> I'm not sure whether or not it represents stored energy, but if you >>> multiply the >>> MGO of a magnet by it's volume, you get a number of Joules (it's not much >>> BTW). >> >> >> How much? If we dissolved magnetic material in an acid, compared with >> dissolving the same weight of the magnet material, unmagnetized, same other >> conditions, could we measure a temperature increase for the dissolved >> magnetized material vs. the dissolved non-magnetized material? I do assume >> the energy would end up as heat. If it's a reasonable amount of heat, this >> would make a nice science fair project. > >
