Optical Teasers Sink Back And Solve Away!

Al Seckel is the world's leading expert on visual and other types of sensory illusions. He has published several award-winning books on the science of illusions and lectures on this topic at many of the world's most prestigious universities. He is also active in building interactive galleries on illusions and perception for science museums around the world. You can find out more about Al Seckel at his web site: http://neuro.caltech.edu/~seckel.Seckel, Al is the author of 'Optical Teasers Sink Back And Solve Away!', published 2004 under ISBN 9781575289557 and ISBN 1575289555.