It might be a good judge of "IQ testing and personality inventory" if you're Mark, and looking for frienamies.
Not a comprehensive personality inventory, certainly. But personality inventories and IQ tests are to see how people think and how they may logically and emotionally respond in similar situations in the future. Maybe we will disagree on that part.
Agree completely about basic principles of physics and audio, yet one can't really expect other people to hold it in the same regard as one's self if the others haven't haven't as fully digested it. Most people never will digest it to that extent, or remember it all years later even if they once did. Intuition and some of physics are things that don't naturally mix well in the minds of most people.
Agree completely about basic principles of physics and audio, yet one can't really expect other people to hold it in the same regard as one's self if the others haven't haven't as fully digested it. Most people never will digest it to that extent, or remember it all years later even if they once did. Intuition and some of physics are things that don't naturally mix well in the minds of most people.
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Oh Scott
After that question, I will never ever again look at capacitors in the same way
(is this really a EE101 level?)
http://www.hep.princeton.edu/~mcdonald/examples/twocaps.pdf
https://arxiv.org/pdf/1309.5034.pdf
https://arxiv.org/ftp/arxiv/papers/0912/0912.0650.pdf
George
conservation of energy? What about the charge held in Cda? Maybe 5-10% of the total C charge (polar cap).
Just being annoying, I know. But if you really did the experiment you would wonder why the two cap charge transfer is slightly less than you expected.... at least in the short term. Not lost to any R, either.
THx-RNMarsh
Just being annoying, I know. But if you really did the experiment you would wonder why the two cap charge transfer is slightly less than you expected.... at least in the short term. Not lost to any R, either.
THx-RNMarsh
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No I was referring,to Joe's forcing a current into an impedance.
Nice problem isn't it? There are other ways to formulate it like in your links, two buckets of water connected by a valve, two identical people hanging from identical springs one holding 2 bowling balls and throwing one to the other person, etc.
Sorry DA is R and has noise (loss mechanism) I measured it. Sorry I should clarify, the simple RC model of DA is valid to extreme accuracy and the thermal noise of the capacitor reflects this. A mica cap has a 1/f spectrum due to the distributed RC nature of the DA.
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Not so trivial when heat and bright flashes of light are off the table! Math starts getting ugly quickly without just saying "Joule heating". (which also serve to damp said tank circuit)
I was scratching my head on my commute in where exactly the energy would have to go with lossless wires. I had it right (whew!) but without the formal derivation. 😀
OK if you say so. The DA is a complication since there has to be internal dissipation via a loss mechanism that behaves as an R which is never 0. You said "Not lost to any R, either." charge can not be lost.to anything so you need to be more precise.
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Mechanical analogy, compress a spring using a force F=k*x where k is the spring stiffness, and the work is obviously W=k*x^2
But the potential energy in the spring is only E=k*x^2/2. Where's the balance?
I think I mentioned that today along with the two buckets of water connected at the bottom with a valve.
Scott,
The capacitor bit is a much better demonstration with 10 uF capacitors with one uncharged and the other at a few hundred volts.
Clearly demonstrates that the energy is not entirely dissipated in the inherent resistance.
Somewhere around I have moving plate capacitors that can be charged to 10kV or so. Makes an interesting demonstration.
George,
The first bit of Electrical Engineering is safety, voltage, current and resistance. Next comes capacitance and energy storage. I would expect the issue to be mentioned in two or three weeks into a course meeting three days a week.
The capacitor bit is a much better demonstration with 10 uF capacitors with one uncharged and the other at a few hundred volts.
Clearly demonstrates that the energy is not entirely dissipated in the inherent resistance.
Somewhere around I have moving plate capacitors that can be charged to 10kV or so. Makes an interesting demonstration.
George,
The first bit of Electrical Engineering is safety, voltage, current and resistance. Next comes capacitance and energy storage. I would expect the issue to be mentioned in two or three weeks into a course meeting three days a week.
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It's very simple.
If you make the caps and wiring using ybco superconducting foil, at ln2 temperatures the oscillating waveform will generate wildly swinging flux in the wires.
This flux, and resulting magnetic field, interact with each the aether and dark matter particles to support a cpt violation.
What is really of concern, is what happens when you use two charged capacitors and one uncharged cap, arranged as an orthogonal triad. If you can arrange it such that all three caps are connected simultaneously, you will notice the charge and parity remain constant but that time reverses....but only above 88 mph.
Sigh, so much typing for such a small return...🙂
Jn
I must admit though, I got to use flux, ybco, superconducting, dark matter, magnetic, orthogonal and cpt in one post...it doesn't get any better than that!!!..waiter, please refresh my martini...
If you make the caps and wiring using ybco superconducting foil, at ln2 temperatures the oscillating waveform will generate wildly swinging flux in the wires.
This flux, and resulting magnetic field, interact with each the aether and dark matter particles to support a cpt violation.
What is really of concern, is what happens when you use two charged capacitors and one uncharged cap, arranged as an orthogonal triad. If you can arrange it such that all three caps are connected simultaneously, you will notice the charge and parity remain constant but that time reverses....but only above 88 mph.
Sigh, so much typing for such a small return...🙂
Jn
I must admit though, I got to use flux, ybco, superconducting, dark matter, magnetic, orthogonal and cpt in one post...it doesn't get any better than that!!!..waiter, please refresh my martini...
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