Although light is considered to be rather a practical than an artistic tool, it has some properties which designers can effectively explore in their works. Indeed, light can also be considered as a medium for more powerful and more vivid artistic expression. In fact, many artists and crews make use of it creating quite impressive works of art.
In this episode of our Monday Inspiration series we present several beautiful examples of light art — paintings, sculptures, drawings and graffitts which were created using light. At the bottom of this post you will find references to related Flickr pools which contain thousands of further examples of what can be achieved out of creative experiments with light.
source: http://www.smashingmagazine.com/2008/07/14/let-there-be-light-light-paintings-and-sculptures/