New Book of Optical Illusions Mark Borthwick and drive positive change

and drive positive change

Knocked Up

Perfect for everyday wear or hiking

deepening the chasm between rich and poor

Beauty is more than skin-deep

New Book of Optical Illusions Mark Borthwick and drive positive changeHow 33 ancient, familiar and new optical illusions work, with 150 examples. The New Book of Optical Illusions is a mind bending collection of 150 of the most significant optical phenomena, loosely grouped into 33 chapters according to particular visual effect. An optical illusion has two elements. One is the perceived illusion, what you see. It may be merging lines, moving shapes or conflicting sizes. The other element is the scientific explanation or