This formula allows the Mathematician to make his or her glass tablet glow. The Mathematician has several options as to how the light manifests. colour, intensity, and steadiness are all controllable. The Mathematician can also decide whether the light forms a sphere, a cone, or a beam. In "sphere" mode, the light is diffuse, like a light bulb's light and adequately illuminates a 2// radius. In "Cone" mode, the light is more focused and illuminates a 45º region 5// long. As a beam, the light is strong and long reaching, 36//, but illuminates only a narrow 5' circle, much like a flashlight. The light emanates from the glass tablet. As this is a wholly artificial light, it cannot affect Undead.