A complete setup for demonstrating wave phenomena including reflection, refraction, diffraction, and interference. The transparent tray (33 cm ? 30 cm approx.) is supported on adjustable legs for levelling. Wave patterns are observed using a mirror and projection screen, with illumination from a white LED light source in steady or strobe mode. Features: Transparent tray with 33 ? 30 cm viewing area. Adjustable three-leg stand for levelling. White LED light source (steady and strobe). Ripple generator with interchangeable plane and point dippers. Digital controller: ripple frequency 1?50 Hz (0.5 Hz steps), light frequency adjustable in 0.1 Hz increments. Accessories: long/short/mini barriers, curved reflectors, concave/convex/trapezoidal refractors. Easy to assemble, operate, and clean.