As the light goes through the liquid, every small vibration changes the light beam through refraction. The device is equipped with a motion sensor which controls a DC motor inside the lamp. When someone enters the area under the lamp, the vibration caused by the motor generates small waves in the tank, which are projected to the floor. Installed in a grid in a larger space, it results in a beautifully immerse floor projection, though it works in small spaces as well.

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