- #1
cmb
- 1,128
- 128
- TL;DR Summary
- Is the skin depth of tarnished silver any different than untarnished?
That's it, just the question.
I am figuring that the tarnish is an irrelevance as it does not participate either magnetically or electrically, so any RF current passing through the [still metallic] silver top layer, albeit with tarnish over the top, will pass through the same thickness of metallic silver and the skin depth magnetic fields will penetrate to the same depth as in the metallic case.
I'm assuming 'normal' tarnishing here of the type one gets leaving something lying around a domestic situation, silver sulphur compounds usually I think.
Therefore, so long as there are good surface-clean metal to make contacts with such a piece, then passing an RF current through the contacts, will be exactly the same as if there was no tarnish between those cleaned contact areas.
Is that about it? Any subtleties I am missing here?
I am figuring that the tarnish is an irrelevance as it does not participate either magnetically or electrically, so any RF current passing through the [still metallic] silver top layer, albeit with tarnish over the top, will pass through the same thickness of metallic silver and the skin depth magnetic fields will penetrate to the same depth as in the metallic case.
I'm assuming 'normal' tarnishing here of the type one gets leaving something lying around a domestic situation, silver sulphur compounds usually I think.
Therefore, so long as there are good surface-clean metal to make contacts with such a piece, then passing an RF current through the contacts, will be exactly the same as if there was no tarnish between those cleaned contact areas.
Is that about it? Any subtleties I am missing here?