thermodynamics of cores.2nd law breach?

[profitis]

ok @milehigh..so we have our gadolinium core at room temp wrapped with coils and send one d.c. oscillation pulse through.what happens if the core drops below its curie point from the resultant cooling end of the thermodynamic cycle..

[poynt99]

Why do you use "spaces" in between words, but not after punctuation? 

[profitis]

@point99..i,l start a thread on that issue later.meantime theres more important issues at hand.

[MileHigh]

Profits:

I read up a bit about gadolinium and the magnetocaloric effect, which I made reference to.

what happens if the core drops below its curie point from the resultant cooling end of the thermodynamic cycle.

Your questions would be better if you could supply more details.  Right now I am going to assume that the magnetocaloric effect might not even work if the core is above the curie point of 20 C.  So the core will not cool down as per the magnetocaloric effect and your question itself is incorrect.

But I realize that your question is a lead in to the points that you want to make, so by all means please do so.  Also, it has to be more than a few cryptic sentences, really explain your points in a clear and unambiguous fashion please.

For reference about the magnetocaloric effect:

The magnetocaloric effect (MCE, from magnet and calorie) is a magneto-thermodynamic phenomenon in which a change in temperature of a suitable material is caused by exposing the material to a changing magnetic field. This is also known by low temperature physicists as adiabatic demagnetization, due to the application of the process specifically to create a temperature drop. In that part of the overall refrigeration process, a decrease in the strength of an externally applied magnetic field allows the magnetic domains of a chosen (magnetocaloric) material to become disoriented from the magnetic field by the agitating action of the thermal energy (phonons) present in the material. If the material is isolated so that no energy is allowed to (re)migrate into the material during this time, i.e., an adiabatic process, the temperature drops as the domains absorb the thermal energy to perform their reorientation. The randomization of the domains occurs in a similar fashion to the randomization at the curie temperature of a ferromagnetic material, except that magnetic dipoles overcome a decreasing external magnetic field while energy remains constant, instead of magnetic domains being disrupted from internal ferromagnetism as energy is added.

When they say, "agitating action of the thermal energy (phonons) present in the material," they mean that thermal energy in the material is used up to knock the magnetic domains into a random orientation and as a result that cools down the material.

When they say "energy is added" they mean that the material is above the Curie temperature and the large amount of ambient heat energy knocks the magnetic domains out of alignment.

MileHigh

[markdansie]

@MH
Thank you for your explanation

I can see how this would lead people to believe they were seeing an overunity effect. This white mans magic is sure powerful stuff.
Kind Regards


PS Profitis, you never did answer my question why you did not assist Rosemary in her live demonstration?