Ardent wrote in message
...
On Fri, 12 Dec 2008 14:50:40 -0800 (PST), "hr(bob) "
wrote:
What I believe Norm is questioning/proposing is that the wire may have
been made more "dense" by being compressed without lengthening, and
that would probably decrease its resistance.
IMHO, if the wire is squashed it will defin8itely get work hardened
and this will mean an increase in resistivity
--
Thanks for your time
Archer
I think a little experiment is in order. A length of fine wire, measure R
and diameter , then squash between shim spaced flats and re-measure R and
dimensions. Whether work-hardening (xtal structure change ?) or
micro-fractures or whatever does not really matter , just some data on
resistance change.
--
Diverse Devices, Southampton, England
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http://home.graffiti.net/diverse:graffiti.net/