In reply to David Roberson's message of Sun, 14 Apr 2013 18:49:20 -0400 (EDT): Hi, [snip] >I am having a difficult time judging the amount of energy stored in these >magnets. I recall almost having a finger removed when holding a piece of >steel near a powerful rare earth magnet. The force attracting the metal was >very large and worked against my muscle power. I do not know how many joules >of energy were released by the magnet as it drew the steel near to itself, but >it was significant. I assume this process could be repeated many times with >additional pieces of steel until the field was hidden within the metal mass.
I think that as the normally randomly oriented magnetic domains in the steel (not the magnet) enter the field of the magnet, they domains in the steel become oriented, and as a consequence release energy. IOW the energy isn't coming from the magnet, but from the steel. If the steel is removed from the magnet, then apart from the energy required to remove it, I would also expect the temperature of the steel to drop a little as thermal energy is used to randomize the magnetic domains in the steel again. (BTW this may be the mechanism involved in the motor, since magnets are moving around rapidly, and the magnetic field strength is constantly varying, it's possible that a magnetic heat pump is at work, that is extracting heat from the air flowing through the device.) Note that this would be another example of a system that violates Carnot because it converts energy from kinetic to potential, and then into kinetic again, but in the form of macroscopic motion rather than atomic motion (i.e. heat). > > >If you take that amount of energy and multiply it by the number of magnets in >the device, you obtain a fairly large amount of energy. I would certainly >expect this amount of available energy to be capable of overcoming the losses >due to friction in bearings for a very long time. The energy extracted by a >fan would need to be handled as well. I am not suggesting that the Yildiz >motor is a fraud, but I suspect that there may be another explanation for its >performance that is more "down to earth". :-) Then I suggest you look at the patent app., and figure out exactly how much magnet volume is available. Multiplying by the MGO of the magnetic material will give you a total energy figure. Regards, Robin van Spaandonk http://rvanspaa.freehostia.com/project.html
