Standing Wave Pattern

Uniform plane wave traveling in the +z direction and normally incident on a medium interface at z=0. Only the electric field intensity is shown.
The top figure shows the incident (blue), reflected (red), incident+reflected (brown) and transmitted field in both media. In the bottom figure, the standing wave patterns created in both media are shown.

Also see below:
Oblique Plane Wave Reflection From Half Space
Radiation from a Circularly Tapered Dielectric Waveguide
Right Hand Circular Polarization (RHCP) Animation
Linear Polarization Animation
Left Hand Elliptical Polarization (LHEP) Animation
Standing Wave Pattern (SWR) Animation
Electromagnetic Propagation of UWB Short Pulse in Random Medium 
Half Wavelength Dipole Antenna Radiation 
Dipole Antenna Radiation 
Dish Antenna Animation (Parabolic reflector) 
FDTD Simulation of a Half Convex Lens