Luminant Screen Shapings is the recent project finished by German artist Stephan Tillmans. It's a photographic series of old tube televisions taken at the very moment they are switched off. The TV picture breaks down and is abstracted to its essential element: light. Each of these photographs is from a different TV, but it's also the length of exposure, timing, and time the TV has been running before the photo is taken that affects the results.
For more extensions on Stephan's work: