The study of light began with painting and its study and depiction of light from the universe - the sun and the moon. With the invention of artificial light at the turn of the century, there was a paradigm shift from "representing light" to "using" light. The visual world is a world of light, and art has always been connected to the visual and to light.
With the invention of artificial light, it became a sign of the modern world as homes and cities lit up. This inspired artists in the electronic age to develop a new medium - light art. In the 1920's and 1930's, basic sources of light art emerged from new technologies of photography and film.