Light art is a form of visual art where main media of expression is light. Light has been used for architectural aesthetical effects throughout human history. However, the modern concept of light art emerged with the development of artificial light sources and experimenting in modern art.
Art critic Hilarie M. Sheets explains that "the interplay of dark and light has been a theme running from Greek and Roman sculpture to Renaissance painting to experimental film. But as technology advanced from the glow of the electric lightbulb to the computer monitor, artists have been experimenting with actual light as material and subject. The 1960s saw a high point in activity, with artists such as Dan Flavin, Bruce Nauman, and James Turrell creating sculptures and environments out of diffuse light or radiant fluorescent and neon tubing.
Today, younger artists are looking beyond their forerunners and taking light in new directions." One of the first to use this technique was László Moholy-Nagy (1895–1946) Examples of light art include works by Julio Le Parc, François Morellet, Gerhard von Graevenitz, Chul Hyun Ahn, Dan Flavin, Olafur Eliasson, James Turrell, Waltraut Cooper, Bruce Munro, Aleksandra Stratimirovič, Austine Wood Comarow, Tim White-Sobieski and many others.[Source]