In uk.rec.audio robert casey wrote:

There is a mechanical property of metals that most of the
qualities in a rod is concentrated in the narrow section
of the rim.

Wrong.

Another idiot who calls himself an engineer who has never heard of
Timoshenko's Strength of Materials.

That's mechanical and or civil engineering. Electrical engineers aren't
usually taught this stuff.

Of course they aren't. They'd be taught about the electrical
properties of homogeneous rods, which are no more homogeneous than are
its physical properties, as any fule kno except apparently those who
are only a mouse click away from the largest human knowledge
repository and the most efficient search engine ever devised.

--
Chris Malcolm DoD #205
IPAB, Informatics, JCMB, King's Buildings, Edinburgh, EH9 3JZ, UK
[http://www.dai.ed.ac.uk/homes/cam/]