On Tue, 09 Aug 2005 19:36:51 -0700, Jim Kelley
wrote:

There is no such thing in reality as a wave that delivers no energy.
You may recall this came up before. The example I noted was in the
instance of total internal reflection. Page 47, "Principles of Optics"
Born and Wolf. When the angle of incidence with respect to the normal
exceeds the critical angle "no light enters the second medium.

Hi Jim,

OK, and in relation to:

It's also arguable whether any energy is transferred from a source to a
lossless, open circuited, 1/2 wave transmission line after the transient
period.

But:

Though there's no uncertainty about the presence of
electromagnetic waves on such a line in the steady state.

is becoming strained language where so many struggle with English. Is
this to imply there's uncertainty about the presence of light that is
captured by total internal reflection? At the last census of total
cancellation, if it didn't meet a certain percentage it became
invisible. Something like an undocumented worker....

73's
Richard Clark, KB7QHC