TR3driver
Great Pumpkin - R.I.P
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Yeah, OK, I guess you can call the electrode temperature part of the design of the spark plug. But it is a more or less inevitable part of the design, since the center electrode must be insulated from ground and electrical insulators are also thermal insulators. Definitely not intentional, at least not originally.TR6oldtimer said:However, a bias can certainly be created by the design of the device.
As far as hole flow, as I understand it only the "holes" move, not the protons (which are, as you say, tightly bound). It's kind of like a game of Chinese checkers, where the marbles are the electrons and the holes are in the board are the protons. As you jump your marble along left to right, the empty hole "moves" right to left even though the board doesn't change.
But the important bit, IMO, is that <span style="font-weight: bold"><span style="text-decoration: underline">it really doesn't matter</span></span>. For any practical use (like wiring a car), just follow one convention or the other and let it go at that. If you view electrical current as "flowing" from positive to negative, it all works out. If you prefer to think of electrons going the other way, it still works out.
Similarly, I don't have to know if the light is particles or waves in order to use a light bulb. And I can set my watch without taking into account the relativistic contraction.