Visualize the sun’s patterns with a roving robotic instrument

The “Spiral Sunrise” by Esther Polak visualizes the sun’s rising and setting through a solar-powered robot that is tethered to a tree and moves in circular rings around the tree. The robot carries an open sandglass so that when it moves, it draws a line of sand and the thickness of the line depends on the speed the robot is moving. Interesting way to show patterns of sunlight over the course of a day.

Spiral Sunrise – Media Lab Prado