Mirrors can be lots of fun. We've all fooled around with them as children, and as adults while shaving etc. Two aspects in particular are fascinating: the left-right reversal, and the angle of reflection. If you have two large mirrors mounted at an angle of say 120-degrees or thereabouts, like in a clothing store, there are multiple reflections ( Read more... )

Yesterday I went to the Clay and Glass Gallery in Waterloo (Ont, Canada) and saw an amazing light display. The essential idea is showing an image which is hidden unless the viewer is wearing special glasses. But it's a work of art, so I'll describe it carefully in case you want to fool around with these ideas yourself. Unfortunately I didn't ( Read more... )