On Jan 13, 5:00*pm, "Dave" wrote:
"Art Unwin" wrote in message

...

( I am assuming that skin depthg is not limitless.)

of course it is limitless, it is an exponential function so it never goes to
zero. *the so called 'skin depth' is only the point where the current has
dropped to 1/e or about 37% of the surface value, still a significant
current.

Yes, skin depth is measured or referred to as 1/e which incorporates
decay.
I am totally unaware how" decay" comes into the picture or what
happens with respect to density
Now I question the term "decay" in this instance as it is the
displacement field
that creats resistance ala eddy current which I allude to as the
levitating force
on a unbound electron. At the moment I cannot see how a unbound
electro within an empty shell
can be absorbed by a tight matrics consisting of bound electrons or
when reaching the inside of a tubular conductor fall off the inner
surface! The morer I get into the radiation subject the more I begin
to question things. The idea that a circulating current /field is
limitless in depth blows my mind.
Art