Build a mesmerizing, decorative lamp that changes colors and mimics the undulating movements of a jellyfish in the water. Lock different components of the planetary gear system in place to change the movement of the tentacles and create a range of hypnotic effects. Explore the physics of light and how the three primary colors in the RGB LED can produce six different color combinations. Discover what makes this type of mechanical design such a versatile, robust, and durable option found in many practical applications, from bicycles and washing machines to cars and wind turbines. A full-color manual provides clear assembly instructions and explanations of how the inner workings create a lifelike illusion. Includes USB-C cord; no batteries required.