This work represents a single point of light in 3D space-time. The image of a Fresnel zone plate is created by encoding a wavefront of light that emanates from a single point in space with a wavefront of light that emanates from infinity. The work is illuminated with a slowly changing spectrum of colours to represent that light has an infinitely variable wavelength and frequency, a small part of which we perceive as colour. The colour is set to change from red in the morning to violet at night,