This book provides a hands-on experience with atomic structure calculations. Material covered includes angular momentum methods, the central field Schrödinger and Dirac equations, Hartree-Fock and Dirac-Hartree-Fock equations, multiplet structure, hyperfine structure, the isotope shift, dipole and multipole transitions, basic many-body perturbation theory, configuration interaction, and correlation corrections to matrix elements. The book also contains numerical methods for solving the Schrödinger and Dirac eigenvalue problems and the (Dirac)-Hartree-Fock equations.

What is the nature of science? The answer to that question can be found in the momentous theories and discoveries that have occupied scientists for generations. The Importance of Scientific Theory series helps students develop a broader and deeper understanding of the nature of science by examining richly detailed examples from history. Titles in this series examine how scientists arrived at core ideas such as atomic theory, germ theory, evolution theory, and more as well as what resulted from widespread acceptance of these theories. Each volume includes a visual chronology; sidebars that highlight and further explain key events and concepts; and, wherever possible, the words of the scientists themselves. Book jacket.

A young adult biography of chemist and physicist John Dalton

First published in 1967. The impression is sometimes given that the Atomic Theory was revived in the early years of the nineteenth century by John Dalton, and that continuously from then on it has played a vital role in chemistry. The aim of this study is to revise this over-simplified picture. Atomic explanations seemed to chemists to go beyond the facts, to fail to lend themselves to mathematical expression, and to deny the ultimate simplicity and unity of all matter. Most, therefore, rejected them. Meanwhile, physicists were developing a whole range of atomic theories to explain the physical properties of bodies in terms of very simple atoms or particles. During the last thirty years of the century the position changed, as physicists and chemists came to agree on a common atomic theory. But the last prominent opponents of atomism were not converted until the early years of the twentieth century, by which time studies of radioactivity had made it clear that the billiard-ball Daltonian atom must, in any case, be abandoned.

Unlock the secrets of the atom with 'What is an Atom? Theories of Bohr, Thomson, Rutherford, and Dalton Explained.' Perfect for grades 6-8, this book demystifies complex atomic models and historical theories, making it a vital resource for educators, homeschooling parents, and librarians. Explore the foundations of atomic theory and its significance in the STEM curriculum, enhancing young minds with the wonders of physical science. Engage with the building blocks of matter today!

"The Atomic Theory of Lucretius" is a scientific essay written by Fleeming Jenkin which deals with principles of atomic theory covering the theory of matter and a postulate by Lucretius. Atomic theory is the scientific theory that matter is composed of particles called atoms. Atomic theory traces its origins to an ancient philosophical tradition known as atomism, elaborated by Roman philosopher Lucretius. According to this idea, if one were to take a lump of matter and cut it into ever smaller pieces, one would eventually reach a point where the pieces could not be further cut into anything smaller.

Atomic and Nuclear Chemistry, Volume 1: Atomic Theory and Structure of the Atom presents the modern ideas of the atomic theory and atomic structure against the background of their historical development. Topics covered include the classification of elements; atoms and electrons; the wave mechanical model of the atom; and the determination of atomic weights. This volume is comprised of six chapters and begins by discussing the origin of the atomic theory, focusing on the role of John Dalton, Avogadro's hypothesis, and the introduction to the laws of chemical combination. The chapters that follow look at the work of the early scientists that led to the development of the periodic table of elements; the use of the Avogadro number to determine the actual masses of atoms and molecules; and the structure of the atom. The essential results of the simple wave mechanical treatment are summarized in the next chapter. This book concludes by considering developments in the determination of atomic weights. Some brief notes on the character and personality of the great scientists who are mentioned throughout the text are included. This book is intended for students and practitioners in the fields of chemistry and physics.