The Daylight Entrance by Daniel Rybakken is all about the illusion of daylight. It’s an light installation in the entrance and staircase of an office building. Both don’t have any natural light, but these panels give you the positive sensation of sunlight. The back of the panels were hollowed by CNC-milling and then backlit with a lot of LED’s.
You might also want to have a look at his “Subconscious Effect of Daylight” sidetable.
found at yatzer