Acknowledgements ixIntroduction 11 Designing with the sun: A historical perspective 91.1 The sun god 91.2 Sunlight informing cave and undergroundarchitecture 121.3 Sun-informed architecture of classicalGreece 151.4 Sunlight in the architecture ofclassical Rome 221.5 The Industrial Revolution and theModern Age 261.6 Energy crisis 392 Daylighting legislation 412.1 Solar zoning legislation 422.2 Legislation based on window size 482.3 Quantity of illumination legislation 493 Seasonal Affective Disorder, depression,and their relationship to daylight 533.1 Light and the human endocrine system 533.2 Daylight and Seasonal Affective Disorder 563.3 Stress and anxiety in relation to daylight 604 Natural light and health 634.1 Sunlight and vitamin D 634.2 Sunlight and hypovitaminosis D 664.3 Bone disease and the role of sunlight andvitamin D 684.4 Heart diseases and the role of sunlightand vitamin D 694.5 Multiple sclerosis and the role of sunlightand vitamin D 704.6 Cancer and the role of sunlight andvitamin D 714.7 Sunlight and diabetes 774.8 Windows and stress 774.9 Health and spectral quality of light 784.10 How much vitamin D is needed? 80viii Contents4.11 Dietary supplements 824.12 Cancer and urban density 825 Psychology of lighting 875.1 Light and mood 895.2 The psychology of daylighting and windows 965.3 Psychology of light and productivity 1005.4 Light and the school environment 1055.5 Daylight, windows and the therapeuticenvironment 1086 Daylighting strategies 1116.1 Sidelighting systems 1126.2 Toplighting systems 1227 Conclusion 127Bibliography 129Index 141