Jim Kelley wrote:
That should read "In the case of wave interference , the words don't
mean that waves are 'doing things' to other waves."

If waves are not 'doing things' to other waves, how
are reflected waves eliminated by thin-films on glass?
What happens to the reflection from the thin-film
which has a reflectance of 0.01? If something is
not done to that real reflection, it must still be
there, but we can see that it is not there.
--
73, Cecil http://www.w5dxp.com