HELIODONS
Updated 9 days ago
A heliodon is a device that simulates the angle at which sunbeams strike a physical model of a building or landscape. All heliodons consist of one or more light sources and a mechanism to support the model and to rotate it through one to three axes. Since the three variables of latitude, time of year, and time of day determine sun angles, a heliodon must be adjustable for all three factors.