Persistence of vision in the human eye is demonstrated by scanning an image through a single line of bright, fast-response lights. During these eye movements, the image is effectively wiped across the retina and the full image is perceived. The goal of this exhibit was to create a display with the above characteristics as well as the ability to toggle into a "teach mode" to give visitors a better sense of what is happening. Mystus achieved the objective by creating a large array of lights that could function in "single line" mode to show the effect or in "full array" mode to display the image in more detail.