Within the world we occupy, light fills the void between source and object. Light becomes a primary catalyst for the way we negotiate the physical world. The physical world is experienced through events, and the order of events establishes our perception of time. Through light's material traits, it is able to alter the events that occur in space. These material characteristics are atmosphere, color, intensity, and presence. Light tangentially affects memory creation because perception of time requires the function of memory. In addition, light is able to engage memory through spatial manipulation. By manipulating the specific light environment of a space, a viewer can recall other memories to further integrate the current experience with past events.