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Armco iron advertises itself as an ultra-pure iron, today with less than 0.15% impurities. I haven't found out what it was in Coler's day, but probably better than 0.5%.
Since AHE requires impurities and few impurities can have a significant effect, then if this is one of the effects required by Coler's machine, it would be interesting to know what these impurities are. A search on Armco's history tells us about “the elimination of the metallic, metalloidal and gaseous impurities in iron” and says: ‘it has been found good practice to reduce all impurities, not only manganese, but sulfur, silicon, carbon, and also gases’.
Mg therefore seemed to be the most important. None of these products are magnetic, no Co, Cr nor Ni (or are they part of the impurities that can be kept because they have no effect on rust?). So we're not very far advanced in its application to the Coler device.
Academic research on AHE is mainly focused on more or less exotic materials, generally in thin films. And it deals with the phenomenon only rarely and marginally in the context of variable currents, rectification is little mentioned or in a context that is not our own, so we're not very advanced either.
What emerges is that there are still many questions surrounding this effect, that there is no theory for all the variants of the effect, that it is far from having been sufficiently tested, and so for us everything remains open.
It seems to me that the basic brick is only a “forward” circuit in a non-magnetic wire, and its “return” in an iron bar or plate just above which the wire passes, provoking a transverse magnetic field in the bar, a bar partially magnetized longitudinally too. The fact of having several passages of wire along a plate with current in the same direction, as well as the multiplicity of plates, or electromagnets, seems to me to serve to increase power and constitute a servo system to maintain the conditions of a reaction maintaining the effect.
I'm not at home at the moment, but I plan to start experimenting on the basic brick next week.
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"Open your mind, but not like a trash bin"
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Author
Topic: The Inventions of Willi von Unruh and Hans Coler (Read 24422 times)
