Originally posted by Astner
This isn't based on the source material.
It's based on their observed effect.
You demagnetize a permanent magnet by either heating it up thus allowing the distribution of electrons to to even out across the metal, and you can't demagnetize an electromagnet unless you cut off the current.
It's an analogy. The point is, you demagnetize a magnet, not by 'pushing stuff against it until it runs out of power,' but by doing something else, be it heating or turning off the current.
Of course this analogy is completely worthless because it's not based on the source material.[quote]It fits the observed, and, notably, directly stated in Tenchi 101, information.
Your view that they can be overwhelmed with simple force, on the flip side, is in conflict with Tenchi 101 which notes it takes specific methods to defeat them.
[quote]
How exactly would this make a change?
Because doing an exotic effect to shut them off is different than simply trying to overwhelm them with force, which as Tenchi 101 states, results in energy 'being converted to a harmless form.'
Keep in mind that we do know that they're composed of finite energy.
And we also know they work by converted stuff into different types of energy that is harmless to them. An attack is not even indicated to be reducing energy in the system. Heck, given by the way the source material says they work, it may add energy.
And again, there are real-life equivalents. Electromagnets take only a constant finite of energy to maintain, and it doesn't matter how many things pass through it's field or push against it, the strength of the field doesn't decrease. Pushing against the field does not drain the energy at any different rate.
There's no canon support to the idea that it uses up energy with use, rather than simply being turned on and off.