The discussion revolves around the interpretation of a statement made by Professor Walter Lewin regarding "rho of s" in the context of electric fields and voltage in a wire setup. Participants are seeking clarification on the meaning and implications of this term as it relates to the behavior of the wires in an electrical circuit.
Participants are seeking clarification and have not reached a consensus on the interpretation of "rho of s" or its implications in the context discussed.
There are uncertainties regarding the exact setup and definitions related to "rho of s," as well as the specific context in which Professor Lewin discusses it.
If I take this wire and I make a cross-section of that wire-- this is wire 1 and this is wire 2-- then at any moment in time, as the voltage wave passes by, this may be positive, that is that rho of s, and this will be negative, that's that rho of s .