Download or read book On the Quantum Theory of Line Spectra Vol 1 Classic Reprint written by Niels Henrik David Bohr and published by Forgotten Books. This book was released on 2017-11-22 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from On the Quantum Theory of Line-Spectra, Vol. 1 Part III contains a discussion of the questions arising in connection with the ex planation of the spectra of other elements. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Download or read book On the Quantum Theory of Line Spectra Vol 2 written by Niels Bohr and published by Forgotten Books. This book was released on 2017-11-24 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from On the Quantum Theory of Line-Spectra, Vol. 2: On the Hydrogen Spectrum In Part III the problem of the series spectra of other elements will be treated from a similar point of view. As pointed out by the writer in an earlier paper, a simple explanation of the pronounced analogy between these spectra and the hy drogen spectrum is offered by the fact, that the atomic systems, involved in the emission of the spectra under consideration, in a certain sense may be regarded as a perturbed hydrogen atom. On the other hand, a clue to the interpretation of the characteristic difference between the hydrogen spectrum and the spectra of other elements was first obtained by sommerfeld's theory of the stationary states of cen tral systems referred to above. As shown by sommerfeld, it is possible on this theory to account in general outlines for the well known laws governing the fre quencies of the series spectra of the elements; and, as it will be shown in Part III, it is also possible, on the basis of the formal relation between the quantum theory and the ordinary theory of radiation, in this way to obtain a simple interpretation of the laws governing the remarkable differences in the intensities with which the various series of lines appear, which on the combination principle would constitute the complete spectra under consideration. As regards the detailed discussion of these spectra, however, it is necessary to bear in mind that the part played by the inner electrons in the atoms of the elements in question forms a far more intricate pro blem than the perturbing effect of a fixed external field on the hydrogen atom. For the treatment of this problem the theory of conditionally periodic systems based on the conditions (22) does not seem to suffice, while, as it will be shown in Part III, it appears that the method of perturbations exposed in the following lends itself naturally also to this case. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Download or read book Report on the Quantum Theory of Spectra written by Ludwik Silberstein and published by . This book was released on 1920 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book On the Quantum Theory of Line Spectra written by Niels Henrik David Bohr and published by Sagwan Press. This book was released on 2015-08-26 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Download or read book On the Quantum Theory of Line Spectra written by Niels Henrik David Bohr and published by Forgotten Books. This book was released on 2015-06-02 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from On the Quantum Theory of Line-Spectra, Vol. 1 In an attempt to develop certain outlines of a theory of line-spectra based on a suitable application of the fundamental ideas introduced by Planck in his theory of temperature-radiation to the theory of the nucleus atom of Sir Ernest Rutherford, the writer has shown that it is possible in this way to obtain a simple interpretation of some of the main laws governing the line-spectra of the elements, and especially to obtain a deduction of the well known Balmer formula for the hydrogen spectrum. The theory in the form given allowed of a detailed discussion only in the case of periodic systems, and obviously was not able to account in detail for the characteristic difference between the hydrogen spectrum and the spectra of other elements, or for the characteristic effects on the hydrogen spectrum of external electric and magnetic fields. Recently, however, a way out of this difficulty has been opened by Sommerfeld who, by introducing a suitable generalization of the theory to a simple type of non-periodic motions and by taking the small variation of the mass of the electron with its velocity into account, obtained an explanation of the fine-structure of the hydrogen lines which was found to be in brilliant conformity with the measurements. Already in his first paper on this subject, Sommerfeld pointed out that his theory evidently offered a clue to the interpretation of the more intricate structure of the spectra of other elements. Briefly afterwards Epstein and Schwarzschild, independent of each other, by adapting Sommerfeld's ideas to the treatment of a more extended class of non-periodic systems obtained a detailed explanation of the characteristic effect of an electric field on the hydrogen spectrum discovered by Stark. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Download or read book On the Quantum Theory of Line spectra written by Niels Bohr and published by Courier Corporation. This book was released on 2005-01-01 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: This classic work by the Nobel Laureate elaborates on the correspondence principle, discussing the theory's applications from a uniform point of view and considering the underlying assumptions in their relations to ordinary mechanics and electrodynamics. Bohr closely traces the analogy between quantum theory and ordinary theory of radiation. 1918-1922 editions.
Download or read book Atomic Spectra and Atomic Structure written by Gerhard Herzberg and published by Courier Corporation. This book was released on 1944-01-01 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: For beginners and specialists in other fields: the Nobel Laureate's introduction to atomic spectra and their relationship to atomic structures, stressing basics in a physical, rather than mathematical, treatment. 80 illustrations.
Download or read book The Theory of Spectra and Atomic Constitution written by Niels Bohr and published by Forgotten Books. This book was released on 2017-09-16 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from The Theory of Spectra and Atomic Constitution: Three Essays The three essays which here appear in English all deal with the application of the quantum theory to problems of atomic structure, and refer to the different stages in the development of this theory. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Download or read book The Old Quantum Theory written by D. Ter Haar and published by Elsevier. This book was released on 2016-06-03 with total page 217 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Old Quantum Theory
Download or read book On the Quantum Theory of Line spectra written by Bohr Niels and published by . This book was released on 1901 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book On the Quantum theory of line spectra written by N. Bohr and published by . This book was released on 1918 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Quantum Theory Classic Reprint written by Fritz Reiche and published by Forgotten Books. This book was released on 2017-12 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from The Quantum Theory This formula which gives the relation between the intensity of radiation from a black body, the temperature, and the colour is called the radiation formula or the law of radia tion of a black body. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Download or read book The Quantum theory of Radiation and Line Spectra written by William Wilson and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Group Theory written by Eugene P. Wigner and published by Elsevier. This book was released on 2013-09-03 with total page 385 pages. Available in PDF, EPUB and Kindle. Book excerpt: Group Theory and its Application to the Quantum Mechanics of Atomic Spectra describes the applications of group theoretical methods to problems of quantum mechanics with particular reference to atomic spectra. The manuscript first takes a look at vectors and matrices, generalizations, and principal axis transformation. Topics include principal axis transformation for unitary and Hermitian matrices; unitary matrices and the scalar product; linear independence of vectors; and real orthogonal and symmetric matrices. The publication also ponders on the elements of quantum mechanics, perturbation theory, and transformation theory and the bases for the statistical interpretation of quantum mechanics. The book discusses abstract group theory and invariant subgroups, including theorems of finite groups, factor group, and isomorphism and homomorphism. The text also reviews the algebra of representation theory, rotation groups, three-dimensional pure rotation group, and characteristics of atomic spectra. Discussions focus on eigenvalues and quantum numbers, spherical harmonics, and representations of the unitary group. The manuscript is a valuable reference for readers interested in the applications of group theoretical methods.
Download or read book The Origin and Development of the Quantum Theory written by Max Planck and published by . This book was released on 2015-06-04 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from The Origin and Development of the Quantum Theory My task this day is to present an address dealing with the subjects of my publications. I feel I can best discharge this duty, the significance of which is deeply impressed upon me by my debt of gratitude to the generous founder of this Institute, by attempting to sketch in outline the history of the origin of the Quantum Theory and to give a brief account of the development of this theory and its influence on the Physics of the present day. When I recall the days of twenty years ago, when the conception of the physical quantum of 'action' was first beginning to disentangle itself from the surrounding mass of available experimental facts, and when I look back upon the long and tortuous road which finally led to its disclosure, this development strikes me at times as a new illustration of Goethe's saying, that 'man errs, so long as he is striving'. And all the mental effort of an assiduous investigator must indeed appear vain and hopeless, if he does not occasionally run across striking facts which form incontrovertible proof of the truth he seeks, and show him that after all he has moved at least one step nearer to his objective. The pursuit of a goal, the brightness of which is undimmed by initial failure, is an indispensable condition, though by no means a guarantee, of final success. In my own case such a goal has been for many years the solution of the question of the distribution of energy in the normal spectrum of radiant heat. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Download or read book The Quantum Theory of the Atom written by George Birtwistle and published by Cambridge University Press. This book was released on 2015-01-29 with total page 251 pages. Available in PDF, EPUB and Kindle. Book excerpt: Original published in 1926, this book presents a detailed account of quantum theory from its beginnings onwards. The text opens with a historical account of the quantum theory from its inception by Planck, and is followed by a full treatment of the dynamical theory evolved by Bohr and his school during the following ten years to explain the phenomena of line spectra. Some chapters are devoted to a general description of optical and X-ray spectra and their significance in the problem of the atomic structure of the elements. It closes with an account of work on the reaction of the atom to radiation fields. This book will be of value to anyone with an interest in quantum theory and the history of science.
Download or read book Report on the Quantum Theory of Spectra written by L. Silberstein and published by . This book was released on 2017-08-16 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:
