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RE: Add a little picture

173.254.219.84

The electric field will distort as the charge inside the dielectric is increased. The problem is the same with a spring. It's linear counter-force at the start, but goes similarly nonlinear the more the force on the spring is increased. A balloon is also similar. These are mechanical features of the limits of material memory being nonlinear.

Maxwell's equations neglects all nonlinearity in material and is in fact only correct for case of free space. Dielectrics are mostly assumed linear, with a model neglecting its true nonlinearity. So other experiments are necessary to show this effect. The lack of perfect "memory" in the mechanical nature of dielectrics adds another distortion feature in hysteresis distortion.

Anything that can be seen on a scope with your eyes, such as effects of dielectrics in capacitors, is huge distortion. You can hear it far more than you can see it on an ordinary scope. It's about 3% HD before you can see the bends in a sine wave.

The same effect is there in wire insulators, HV charges on vacuum tube sockets. This is no longer assumed free space anymore through the socket. But it is a far less electric field strength there than inside capacitors. So distortion from these sockets have to be much smaller. In fact, I personally haven't heard any difference in sockets. But I will not be the kind of guy who has to tell off the next guy who thinks there is a difference. I used to think caps would also make no difference, but I hear big differences now and I would not make the same mistake again, I hope. When people can peel the onion back further than I have, who knows what next effect will be noticeable?

I have to see it that way. When people are still saying all amps sound the same, I just leave them. What a waste of time (with aggravation) talking to them. Most people don't say that, but the idea of "parts quality doesn't sound different" is amazingly still pervasive. No part is pure. Even passive devices distort nonlinearly.


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