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originally posted by: Flyingclaydisk
So one of my theories is, it must have something to do with electrochemical phenomenon (some sort of galvanic reaction maybe?). It's an interesting topic to be sure.
originally posted by: TheRedneck
OK, looks like magnetism might be at the core after all...
Metal detectors work by introducing an AC electromagnetic field that induces an AC electrical signal in any type of conductive metal within range. That induced voltage gradient then causes a tiny AC current in the metal that induces magnetic eddies. Those magnetic eddies are then picked up by the detector (probably using a Hall Effect sensor).
Now, thinking about that... consider a person with two metal rods in their hand, witching for water. If a tiny electrical current (much less than what could be felt) were induced from the end of the rod in their right hand to the end of the rod in their left hand, that would create an electrical circuit. The currents would induce magnetic eddies around the rods of opposing polarity and cause any metallic (conductive) rods to be attracted to each other.
For the effect to be so noticeable at such low power levels, the frequency would have to be pretty high.
The question is then, how does water create this induction?
I am thinking it may be the side effect of what I mentioned above with the rapidly changing chemical composition at the molecular level. That would mean what we are picking up is essentially white noise from the water itself.
Here's you something to experiment on Phage... once you prove the phenomenon exists to your (scientific) satisfaction, try it again with de-ionized water. See if the effect weakens or disappears.