Obvious? So a perfect conductor will also give V=0 and R=0 but without the Meissner effect? So, according to you, it is a superconductor without the Meissner effect? So why use the Meissner effect to define superconduction?
No, johan. It is NOT a superconductor without the Miessner effect. Zero resistance without the Meissner effect is perfect conduction. Zero resistance WITH the Meissner effect is superconduction. Superconduction is
not the same as perfect conduction. What on earth ever made you think it was, when I explicitly explained that it was not?
Exactly my argument! And the reason why you cannot define superconduction in terms of Ohm's law until you can identify why an equilibrium current can flow through such a material.
Sure I can. Anyone can. There's no problem. Let V go to zero, and you're in equilibrium. And there are MANY ways to achieve that. For example, use a battery, a resistor, and a superconductor all in series. Your circuit is now a standard LR circuit, and equilibrium current is approached exponentially. No problem at all. You have imagined a problem where none exists.
I am not "appealing" to non equilibrium conditions in certain cases but pointing out that according to your model you will not be able to get an equilibrium current as is experimentally found. I only refuse to look at non-equilibrium conditions since we are only discussing equilibrium super currents on this thread.
Indeed: you'll look at non-equilibrium conditions when you think they'll disprove my position, but refuse to look at them when they threaten your position.
When you switch on a current over a resistor you also at first have "non-equilibrium" conditions. Ohm's law only applies when the current reaches a terminal speed owing to the "friction" that Ohm defined as resistance. Thus Ohm's law can only be applied after equilibrium has been reached.
So what? 1) That's not a problem, and 2) we can extend this to non-equilibrium conditions quite easily by using the more general impedence formulation of Ohm's law, where the
inductance of the superconductor (remember that? I've mentioned it quite a few times) is
not zero, and it handles zero resistance just fine.
It is a mathematical accident that this is so
No, johan, it is not a mathematical accident.
Since we know that in all other materials Ohm's law only applies after the charge-carriers reaches a constant terminal speed when there is a high enough resistance, one must explain how the charge-carriers within a superconductor can reach a constant terminal speed without any friction.
That's easy to explain: the field vanishes. No more field, no acceleration along the direction of motion, and presto!
Constant speed. There is no problem here. You're trying (desperately) to invent a problem, but it just doesn't exist.
What you are claiming is that a parachute will work just as well on the moon as it does on earth.
Nope. I'm claiming that a ball will roll at constant velocity in the absence of any friction if the surface is flat.
We are not talking about transient conditions but steady-state equilibrium conditions; for which you claim that the charge-carriers are being accelerated between two points within the material while there is no voltage difference between these points.
Acceleration perpendicular to the direction of motion is not a problem, it doesn't change the speed of the charge carriers, and it doesn't violate equilibrium conditions. I have
never claimed that there is ANY acceleration along the direction of motion for a current in equilibrium in a superconductor.
Can you not see that you are talking BS?
I can see that once again you have completely misunderstood what I've been saying. Perhaps you're having trouble with your memory.
Where did I claim that non-equilibrium conditions are not possible?
When you have stated, multiple times, that charge carriers in a superconductor cannot accelerate.
If we have to include them on this thread, this thread will be even longer than you have caused it to become with your endless infantile arguments.
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I tire of your insults, johan. But since you persist in playing that game, I will let you have it your way. This thread is long because you have grown senile. Whatever physics you once may have known, you have since forgotten. You are a dottering old fool, and it is long since past time that you realize that you are no longer capable of doing science. You are not ignored by the scientific community because of some vast conspiracy, or because of universal blindness on the part of active and productive researchers: you are ignored because you're just another internet crank, and insane internet cranks are a dime a dozen.
Does this style of argument really suit you better, johan?