for his contributions to the knowledge of electronic structure and geometry of molecules, particularly free radicals. He received the Nobel Prize for Chemistry in 1971, ". Herzberg published his encyclopedic four-volume work, Molecular Spectra and Molecular Structure. The retail price of the first Dover edition was $1.95 in 1944, and the book is $13.95 today, surely better than the rate of inflation over the past 67 years. Still in print in 2011, Atomic Spectra and Atomic Structure is now in its 36th Dover printing, by far the record for any Dover scientific book. His classic work on spectroscopy, Atomic Spectra and Atomic Structure was published by Prentice-Hall in 1937 and first reprinted by Dover, with corrections, in 1944. After a few years at The University of Chicago, he returned to Canada in 1948 and assumed the first of several positions at Canada's National Research Council. Herzberg left Germany in 1935 and first took up a guest professorship at The University of Saskatchewan. Gerhard Herzberg was among the thousands of European mathematicians and scientists who emigrated to North America from Germany and other central European countries during the 1930s. Gerhard Herzberg: Exploring the Atomic Spectraĭr. It can be divided by atomization source or by the type of spectroscopy used. Since unique elements have characteristic (signature) spectra, atomic spectroscopy, specifically the electromagnetic spectrum or mass spectrum, is applied for determination of elemental compositions. Energy level diagrams and ionization potentials. Atomic spectroscopy is the study of the electromagnetic radiation absorbed and emitted by atoms. Experimental Results and Applications: 1. Hyperfine Structure of Spectral Lines: Isotope effect, nuclear spin. Then follow sixteen chapters devoted to a unified, logical deduction of the structure of the spectra of atoms from quantum mechanical principles. Determination of term type from electron configuration. Building-up Principle and Periodic System of the Elements: 1. Space quantization (Zeeman effect, Stark effect). Empirical facts, their formal explanation. Multiplet Structure of Line Spectra and Electron Spin: 1. Partial Contents: Simplest Line Spectra and the Elements of Atomic Theory: 1. Complex mathematics are avoided results of calculation are accepted without proof, while references are given to places where detailed proofs may be found. Treatment throughout is physical rather than mathematical, with experiment serving as a starting point for theory. It is especially valuable to physics and physical chemists who are specialists in other fields, but require a comprehensive basic knowledge of atomic spectra because of their significance to their own work. This book has long been recognized as one of the most satisfactory introductions to atomic spectra and their relationship to atomic structure.
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