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In Reply to: RE: have you heard this effect as well or am I going mad? nt posted by moray james on August 24, 2007 at 09:26:13
blimey, it's going to be difficult testing resistors if they're soldered in place. Are there any theories on this, as I don't really understand what's going on?
Follow Ups:
well wire is drawn through a die (a series if dies) and this creats a nap like in a carpet where the fibers lay in one direction. So the surface tension is different in one direction and I would guess that the matrix in the wire is also not symetrical. This probably accounts for most of what you will hear with wires. Wide bandwidth coax cables polish the centre wire and will also plate with Rhodium because Rhodium is as smooth as you can get when plating, the molicules lay flat then they polish again.
moray james
I wonder if anybody really undertands the physics of current flow. The problem for me is that ac current will flow one way, then the other, so any asymmetry should be balanced out shouldn't it?
you could think of it like the connections in a vacuflo line. If there are any sharp edges or flanges at the joints they will cause a disturbance creating a small vortex and that will cause a drop in the vacuum. Not the same thing but a disturbance is a disturbance. The only way to make it go way is to insure that the joints are all flush and smooth. There may be other things going on in the wire but the point is you can hear it.
moray james
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