On Sun, Sep 9, 2012 at 12:48 AM, Jouni Valkonen jounivalko...@gmail.com wrote:
Hello,
there was some discussion about this alleged perpetual motion machine. It
was elegant, perhaps too elegant, and therefore it is probably a fake.
Evolution of perpetual motion
http://www.youtube.com/watch?v=zqG-TL0WnjE
The idea is however simple and understandable and I refuse to believe that
it is impossible, because I do not see how it could violate the quantum
mechanics and the conservation of information.
what is the conservation of information?
As we know, that it based on improved version of SMOT
(http://en.wikipedia.org/wiki/Simple_Magnetic_Overunity_Toy). SMOT itself is
a failed perpetual motion machine, because no one has managed to return the
iron ball back to the starting square. Therefore, no energy is created and
friction will win.
However I developed a magnetic switch that can be applied to weaken the
starting point magnetic field by 20%. Therefore rotational energy should be
enough to overcome the sticking point. And when sticking point is behind,
magnets are again switched on by heating and new revolution is started with
full force.
As we discussed earlier, it takes about 360 mJ energy to align dipoles and
magnetize 1 cm³ neodymium magnet. On the other hand, when magnet is
demagnetized 360 mJ heat is released. The alignment process itself is just
normal information processing that does not consume energy more than is
required to account entropy.
We can demonstrate that demagnetization is exothermic reaction if we are
heating magnet to curie temperature, because it will take 360 mJ less energy
than heating similar non-magnetized body to curie point. Demagnetization
does not take energy, but it releases energy.
Therefore we can use cooling as rudimentary switch mechanism. Neodymium
magnets loses about 20% of magnetism when magnet is cooled from -150°C to
-250°C. With other alloys this kind of 'phase transition' could be more
prominent that changes the crystal lattice structure so that dipoles get
even more misaligned. And when magnet is heated back above transition
temperature (-150°C with neodymium magnet), magnet is again magnetized as
dipole structure realigns. Hence this alignment and misalignment cycle can
be fully reversible.
This way we could get also SMOT-derived perpetual motion machine working
continuously, if we turn off the magnets when wheel is approaching the
sticking point. Therefore, as magnetic field is temporarily weakened with
flash-cooling, rotational energy of the wheel would be sufficient for
overcoming the sticking point (and friction).
This cooling and heating cycle does not bring external energy to the system,
because permanent magnets do not store energy. Therefore this cooling and
heating idea will not nullify the idea of perpetual motion machine, because
we do not use that heat energy for doing the work as a heat engine. This is
also where magnetism differs from nitinol spring based heat engine.
Permanent magnets do not store energy contradicts your earlier
statement that demagnetisation releases energy.
—Jouni
For neodymium magnet behavior at cryogenic temperatures, see:
http://www.kjmagnetics.com/blog.asp?p=temperature-and-neodymium-magnets
Harry
