Everything Explaining on Instagram: "Sound and water motion illusion This setup uses sound and water to create a cool illusion where flowing water looks frozen, moves backward, or flows slowly. A speaker vibrates a soft rubber hose while water runs through it, and a tone generator controls the vibration speed. When the sound frequency matches the camera’s frame rate of 24 frames per second, the water appears frozen on camera. Slightly lower or higher frequencies make the water seem to move backw