Have you notice that, since the World Bank internal import/export information has been exposed, the talking heads are back to inserting the descriptor “novel” when reporting on the virus?
You know, so that everyone /once again/ agrees that this is something never seen before.
At least, not at all in 2017-2018.
Skin effect occurs in any current-carrying conductor as explained at the link below (or in engineering texts in more detail), and this leads some to confuse their use as protection against static electricity discharges (like the Arc Attack video below) rather than the induced currents caused by the broadband damped sine pulse of EMP. The two are different phenomena but a Faraday cage offers protection against objects placed inside for essentially the same reason - induced currents will flow over the conductive surface and cannot induce potentially damaging impulses in objects inside. Since it is a conductor, and since the skin effect occurs in all conductors. these currents flow through charge carriers in the outer surface of the conductor, to a depth that is a function of the resistivity of the material, the frequency, and a couple of constants.
Skin depth, denoted by the symbol δ, is a measure of skin effect and is the depth at which the current density is 1/e of the current density at the surface of the conductor. For an example, at 1 GHz, skin depth in copper is only 0.000081 inches. This means that most of the current will flow in the outer 1/12 of the thickness of a piece of household aluminum foil (.081 out of .94 mils).
Factual link: https://interestingengineering.com/how-does-a-faraday-cage-work
Fun link showing a Faraday cage providing protection against static electric discharge from Tesla coils: https://www.youtube.com/watch?v=KuV4fL4Yqvw Note that skin effect provides a safe path around the performers skin!