Posted on 10/30/2017 2:01:49 PM PDT by Leaning Right
>The electrons almost all travel on the surface of a conductor, not through the core.<
If that were consistently true, why compensate for “skin effect” in RF applications? There isn’t a surface conduction tendency in a stable direct current flow through a conductor. Surface conduction becomes of concern with alternating current, in proportion to a rise in frequency.
Sound propagation speed is substantially different. Ultrasound detects boundary reflections of gold overlay over tungsten core.
http://www.rfcafe.com/references/general/velocity-sound-media.htm
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