Szczepan Bialek wrote:
This small transverse component is because the light is radiated by dipole.
Radio waves radiated from monopole are the pressure waves (oscillatory
flow).

Do you want to claim that the kind of waves radiated from a transmitter
antenna varies depending on the type of antenna?

So that a dipole antenna produces another kind of wave than a monopole
antenna?

It should then be possible to determine at a distance what kind of
antenna was used to transmit the wave. Can you describe an experiment
to do this determination?