Hybrid modes have both electric and magnetic field components in the direction of propagation.

H modes have a magnetic field component in the direction of propagation.

E modes have an electric field component in the direction of propagations.

Field: The magnetic field component of an electrical machine.

Using the normal analogy, presented above, leads to calculation of the different field components at physically separated points.

The silver layer was too thick to allow significant enhancements of evanescent field components.

The surface charge density on the sphere is the difference between the radial field components:

The field components of the wave diminish with distance from the interface.

Thus the modes of the structure will be hybrid, that is with both the longitudinal field components different from zero.

Then the expressions of the electromagnetic field components become: