The Technique of Kinetic Art. Contents follow: Part I (Vision and perception, Illusion, and Illusory movement), Part II (Light and simple optics, Colour, and The use of light), Part III (Control of light: mechanical, Control of light: electro-mechanical, Control of light: electronic, and Basic circuits), Part IV (Electricity, Low voltage supplies and rectification). Appendices includes SI Units and abbreviations, Pulfrichs pendulum, Rhombic dodecahedron, Details of construction, Electronic and electrical symbols and resistor code. See also a Bibliography, Suppliers in Great Britain and the USA, and an Index.