Bristol Light Festival

I visited the light festival a couple of nights ago, but didn't have time to see all the installations, so I returned this evening to view some more. 

This one was called Tetra.  It was a square framework covered in canvas on to which patterns were projected from inside.  People on the outside could interact with the exhibit by touching and pressing on the canvas which was supposed to change the visuals and sounds.   I didn't see much of a direct relationship between the patterns and the people touching the canvas, but it drew lots of attention and people seemed to enjoy it.

I have posted a set of pictures from the Festival on Flickr.