The Blue LED Sand Art works on the principle of gravity and fluid dynamics. Inside the sealed frame, fine sand particles are suspended in a liquid medium. When the frame is rotated, the sand slowly descends through the liquid, forming intricate landscapes and patterns. The varying densities of sand and liquid create a natural, slow-motion effect that is both visually captivating and scientifically fascinating. The LED light adds an extra layer of depth by illuminating the sand and liquid, enhancing the tranquil experience.