1. To measure the phase velocity in a medium, especially if it is not vacuum, is rather
difficult. Instead, it is proposed to proceed as follows:
1. Generate an electric field intensity in the medium with permeability μ and
permittivity ε at some arbitrary frequency assuming that this is a plane wave.
Assume a lossless medium. Measure the amplitude of the electric field intensity
2. Measure the amplitude of the magnetic flux density B, produced by the electric
Now that you have E and B
Calculate the phase velocity in the medium