Design of Projection-type Water Wave Demonstration Instrument

The demonstration instrument consists of vibration source module, stroboscopic module, projection module, and control circuits. The source drives oscillator to generate water wave in the flume. After LED irradiation and plane reflection, the wave image is projected on the ground glass. Different vibration frequency and flicker frequency produce different effects of the wave image. With different oscillators and some special modules, special wave images can be presented, such as circular wave, plane wave, reflection, diffraction and interference.