We use lotsa 9's when we need very high thermal conductivity at 4.5K, both copper and aluminum.
Ele conductivity increases 3 orders of magnitude as well, but if it ain't zero ohms, it's just a voltage tap.
jn
So as usual you can't engage in any real discussion so you just throw up a bunch of smoke.
se
It's not smoke, it's just an artifact of scanning. The particular pages shown are very elementary and general, not really germane to any particular exotic wire claims. That's OK, materials science isn't John's specialty.
Looks a bit like attenuating a floor tile, doesn't it ?
It should not be much of a surprise that the designer of those products subsequently got into manufacturing and marketing of.....fancy cable wear.
That finish looks like a multicolor Zolotone finish to me. Simple spray painted finish. Even if it isn't that is not a quality that most people want in a home environment, looks like an industrial finish for a machine.
We went through those "levels" about 100 years ago.
If you want to discuss what you think is the relevance and give real analysis or appropriate supporting data, we're all ears, as it were.
Now let me point out a few features of the first pages presented.
First, there is the INTRINSIC resistivity of a pure metal at a specific temperature (usually room temperature for audio). THEN there is the increase of resistivity due to impurities, usually other metals, oxygen, etc.
Finally, there is the state of order or disorder of the metal due to previous operations on it, such as quenching, soft annealing, work hardening, etc. This can create 'vacancies'. Please note that each contribution is separate. Now, this is the question, are these changes in resistance strictly RESISTANCE or is there a bit of rectification, or sensitivity with audio level? That is the question.
First, there is the INTRINSIC resistivity of a pure metal at a specific temperature (usually room temperature for audio). THEN there is the increase of resistivity due to impurities, usually other metals, oxygen, etc.
Finally, there is the state of order or disorder of the metal due to previous operations on it, such as quenching, soft annealing, work hardening, etc. This can create 'vacancies'. Please note that each contribution is separate. Now, this is the question, are these changes in resistance strictly RESISTANCE or is there a bit of rectification, or sensitivity with audio level? That is the question.
So far, I've seen nuttin down in the nanovolt region.
Linear, linear, linear.
Oh, forgot. Linear, linear, linear, down to about 1.8 Kelvin.
jn
Why are we talking about copper resistivity? Surely it has been determined that all we require for audio purposes is conductivity somewhat better than mud?
To answer John's question, more scatterers means more resistance - that is all. Nice pure linear resistance, no rectification, no added noise, no distortion. I remember first year 'properties of materials', where we learnt that random scattering of electrons is what causes Ohm's Law.
To answer John's question, more scatterers means more resistance - that is all. Nice pure linear resistance, no rectification, no added noise, no distortion. I remember first year 'properties of materials', where we learnt that random scattering of electrons is what causes Ohm's Law.
I think it's a reasonable question to ask whether something is truly random. The great insight of the Twentieth Century was that there are no continuums.
Thanks,
Chris
Thanks,
Chris
Last edited:
Let us remember where the burden of proof lies: those who are questioning the accepted theory of metallic conductors. Repeatedly demanding proof that the theory is correct is not quite the same as offering evidence and plausible explanations to the contrary.
Someone could demand proof that there are no fairies/goblins living at the bottom of my garden. I would find it difficult to provide sufficient proof, but this is not evidence that they are there. It is for the goblin-believers to offer proof that they are there; in the meantime I will continue to believe they are not there. If someone who organised goblin-spotting tours started claiming that there are goblins everywhere one might question his independence of thought.
Someone could demand proof that there are no fairies/goblins living at the bottom of my garden. I would find it difficult to provide sufficient proof, but this is not evidence that they are there. It is for the goblin-believers to offer proof that they are there; in the meantime I will continue to believe they are not there. If someone who organised goblin-spotting tours started claiming that there are goblins everywhere one might question his independence of thought.
- Status
- Not open for further replies.