Wat kan spelen met licht toch plezant zijn. En mooi.

“Three out of six surfaces of the cube are made of flexible membrane (foil mirror) with air tank and a compressor connected to it and the other three mirrors are semi transparent spy-glass. By inflating or deflating the air tank, the membrane turns convex or concave, deforming the reflections.”

http://www.numen.eu/installations/n-light/membrane/#