Second example—Wave incident at angle to flat reflector, no gap
Panel Gap Models for the SPT First example Second example Third Example Fourth Example Fifth Example		In this example, the plane wave enters from the upper left at a 5.7° angle to the vertical, and strikes the flat, perfectly reflecting surface.  What is shown is magnitude of the E field at a plane in the middle of the volume.  The incident wave interferes with the reflected wave, resulting in a standing wave.  The E field of the standing wave must still always have a z dependence which varies as sin(2πz/λ) but in this case different parts of the wave in the x direction are excited at different times. At the reflecting surface, the magnitude of the E field is zero.  The box is 4 mm high in the z direction and 6mm wide in the x direction.  The frequency of the incoming wave is 150 GHz, so the box is approximately two wavelengths high.  The rms field strength of the incoming wave is 1 V/m.