"Version: 20180901"--Title page verso.Includes bibliographical references.1. Introduction -- 2. What is a liquid crystal? -- 2.1. Protons, electrons and atoms -- 2.2. Molecules -- 2.3. Phases of matter -- 2.4. Liquid crystal3. Light -- 3.1. What is light? -- 3.2. Polarised light -- 3.3. Circular polarisation -- 3.4. How is light affected by matter? -- 3.5. Light and anisotropic materials -- 3.6…