Szczepan Bia³ek wrote:
AC current create the transverse waves. The capacitor plates (or balls)
longitudinal waves.
What are the radio waves: transversal or longitudinal?

The radial currents on the capacitor plates are 180
degrees out of phase. A lot of the radiation from the
plates simply cancels.

Ramo and Whinnery say that radiation is "primarily
TEM", i.e. TEM is the "principle mode".
--
73, Cecil, IEEE, OOTC, http://www.w5dxp.com