Jim Kelley wrote:
And yet you keep posting your calculations and claiming to have made
measurements.

As have w7el and w8ji. All their measurements proved
is that standing wave current doesn't change phase
relative to the feedpoint current phase. They did
not measure the delay through a coil. They measured
the phase shift through the coil using a current that
doesn't change phase relative to the two measurement
points. The same thing happens with a wire.

To measure the actual delay through a coil, traveling
wave current must be used. I am apparently the only
one who ran that actual experiment. I guarantee if
anyone performs that experiment in a valid manner,
they will see similar results to mine. Here's the
setup that I used to measure a ~25 nS delay through
a 75m bugcatcher coil at 4 MHz.

http://www.w5dxp.com/coiltest.GIF

You should be able to achieve that setup in your
physics lab.
--
73, Cecil, IEEE, OOTC, http://www.w5dxp.com