Preface; Acknowledgements; Contents; Part I: Rainbows, Light and Optics; Chapter 1: Unity and Symmetry in the De Luce of Robert Grosseteste; 1.1 Introduction; 1.2 Unity and Breakdown of Complex Problems into Testable Components; 1.2.1 Symmetry and Tests of Refraction; 1.3 Spherical Symmetry of the Universe Arising from Light as the First Form; 1.3.1 Unity of Celestial and Terrestrial Matter; 1.4 Symmetry and the Number of Celestial Spheres; 1.4.1 Modern Analogues; References; Chapter 2: Grossetesteś Meteorological Optics: Explications of the Phenomenon of the Rainbow After Ibn al-Haytham

2.1 The Meteorological Optics of Robert Grosseteste2.2 The Rainbow; 2.3 Colour; 2.4 The Tradition of Ibn al-Haytham; References; Manuscripts; Chapter 3: Robert Grosseteste and the Pursuit of Learning in the Thirteenth Century; 3.1 Avicebron, the Fons vitae and Robert Grosseteste; 3.2 The School of Chartres and the Problem of Pantheism; 3.3 David of Dinant; 3.4 The Amalricians; 3.5 Backlash and Accommodation; 3.6 Robert Grosseteste and the Pursuit of Learning in the Thirteenth Century; References; Edited Primary Sources

Chapter 4: All the Colours of the Rainbow: Robert Grossetesteś Three-Dimensional Colour Space4.1 Our Task: To Understand Colour; 4.2 A Thirteenth Century Introduction to Colour; 4.2.1 Grosseteste on Colour; 4.2.2 The De coloribus to the De colore; 4.3 Functional Interpretation of the De colore; 4.3.1 How Significant Is the Three-Dimensional Scheme?; 4.3.2 How Should We Interpret Each of the Dimensions?; 4.4 The De colore to the De iride; 4.5 Modelling the Colours in a Rainbow; 4.6 Linking the Model to Grossetesteś Account in De iride; 4.7 A Twenty-First Century Introduction to Colour

4.7.1 The Biological Basis of Trichromacy4.7.2 Manipulating Colour Experience; 4.8 Bridging Thirteenth and Twenty-First Century Accounts to Translate Grossetesteś Key Terms; 4.8.1 Quantifying the Variety of Colour in Natural Rainbows; 4.8.2 Consistencies and Inconsistencies in the Scheme; 4.9 Conclusions; References; Part II: Purity: Physical and Spiritual; Chapter 5: Medicine for the Body and Soul: Healthy Living in the Age of Bishop Grosseteste c. 1100-1400; 5.1 Secular Medicine and Divine Care; 5.2 Medicine and the Church; 5.3 `Medical ́Ideas About Health; 5.4 Self-Help Guides

5.4.1 Arabic Texts5.4.2 Latin Texts; 5.5 Spiritual Advice; 5.6 Conclusion; References; Manuscripts; Chapter 6: The Corruption of the Elements: The Science of Ritual Impurity in the Early Thirteenth Century; 6.1 The Science of Ritual Impurity; 6.2 Leprosy and Leviticus in De Legibus; 6.3 Science and the Literal Sense; 6.4 The Rationality of Ritual Law; References; Part III: Robert Grosseteste and Roger Bacon; Chapter 7: From Sapientes antiqui at Lincoln to the New Sapientes moderni at Paris c. 1260-1280: Roger Baconś Two Circles of ...; 7.1 Roger Baconś Two Circles of Scholars