The availability of electric lighting has changed the lives of people the world over and lighting is a major consumer of energy. This book is a comprehensive review of the interaction of people and lighting and supercedes the author's classic Human Factors in Lighting. The technology has changed markedly in recent years with the introduction of new light sources and new methods of light distribution and the significance of specialist lighting applications are now better understood. This Second Edition includes new and updated information to help understand the forms of lighting that can alter human visual capabilities and enhance productivity, ensure comfort and create appropriate lighting conditions.