Methods used to conduct the experiments.
1. Input tray, fill the tray with water level is about 1.5 -2.0 cm water level regularly as well.
2. Inserting artificial lighting 12 v.ac / dc, and plugs into the motor 0. - 24 volts
3.Wave front line demonstrations To touch the surface of aluminum sheet evenly over the length of the spindle tapping. Move the origin of the water level (Beam on the surface, a vibration will not cause knock) switch.4. The demonstration of wavefront curvature. (At the beginning of the wave generator) Slide the bar to a higher level. Rotating rod knock knock stem end of the stem surface wave power supply to the motor that causes the vibration
5.Experiments on the reflection of electromagnetic waves.Wave reflecting surface is placed in the tray. Fingers tapping a slow rhythm attach beams to cause oscillation. Waves in a straight line moving waves reflected light illumination and observation of the incident reflection