5:49

The Magical, Mystical, Mind-boggling Ames Window

3:50

Impossible folding paper problem

4:54

The Secret of Chromakey

4:50

King Solomon's Circles

3:59

10 Mind Blowing Optical Illusions

4:39

The Mystery of Rattlebacks

4:39

The mysterious isochronous curve

8:04

Amazing Physics Toys/Gadgets 1