Nearly all the information we know about the Universe comes from the study of light as it reaches us. The understanding of this information contained in light requires both telescopes capable of resolving light into its different component colors, as well as detailed knowledge of the quantum mechanical behavior of atoms and molecules. This unique book, which is based on a third-year undergraduate course given by the author at University College London, presents the basic atomic and molecular physics necessary to understand and interpret astronomical spectra. It explains what information can...

Nearly all the information we know about the Universe comes from the study of light as it reaches us. The understanding of this information contained in light requires both telescopes capable of resolving light into its different component colors, as well as detailed knowledge of the quantum mechanical behavior of atoms and molecules. This unique book, which is based on a third-year undergraduate course given by the author at University College London, presents the basic atomic and molecular physics necessary to understand and interpret astronomical spectra. It explains what information can...

Building on the material learned by students in their first few years of study, this book presents an advanced level course on statistical and thermal physics. It begins with a review of the formal structure of statistical mechanics and thermodynamics considered from a unified viewpoint. After a brief revision of non-interacting systems, emphasis is laid on interacting systems. First, weakly interacting systems are considered, where the interest is in seeing how such interactions cause small deviations from the non-interacting case. Second, systems are examined where interactions lead to...

Building on the material learned by students in their first few years of study, this book presents an advanced level course on statistical and thermal physics. It begins with a review of the formal structure of statistical mechanics and thermodynamics considered from a unified viewpoint. After a brief revision of non-interacting systems, emphasis is laid on interacting systems. First, weakly interacting systems are considered, where the interest is in seeing how such interactions cause small deviations from the non-interacting case. Second, systems are examined where interactions lead to...