‎PERRIER (Anthelme).‎
‎Gravitation.‎

‎Einheitliche Feldtheorie von Gravitation und Elektrizität (+) Neue Möglichkeit für eine einheitliche Feldtheorie von Gravitation und Elektrizität (+) Zur einheitlichen Feldtheorie (+) Einheitliche Feldtheorie und Hamiltonsches Prinzip (+) Über den ge... - [PMM 416 - A NEW THEORY OF GRAVITATION]‎

‎Berlin, Königlich Akademie der Wissenschaften, 1925-1929. 1. Einheitliche Feldtheorie von Gravitation und Elektrizität. Offprint: S. B. preuss. Akad. Wiss., 1925, pp.414-419. Original wrappers. Mint. (Weil 147 / Boni 155).2. Neue Möglichkeit für eine einheitliche Feldtheorie von Gravitation und Elektrizität. Offprint: S. B. preuss. Akad. Wiss., 1928, pp.235-245. Original wrappers. Mint. (Weil 162/ Boni 175).3. Zur einheitlichen Feldtheorie. Offprint: S. B. preuss. Akad. Wiss., 1929, pp.2-7. Original wrappers. Mint. (Weil 165/ Boni 183).4. Einheitliche Feldtheorie und Hamiltonsches Prinzip. Offprint: S. B. preuss. Akad. Wiss., 1929, pp.156-159. Original wrappers. Mint. (Weil 166/ Boni 184).5. Über den gegenwärtigen Stand der Feldtheorie. In: Festschrift Dr. A. Stodola, Zürich, Füssli, 1929, pp.126-132. Publishers full cloth. Spine slightly faded. Otherwise mint. (Weil 168 / Boni 178).All in all a very fine set.‎

‎Offprint of all four papers and first edition of the final essay, constituting Einstein's attempt toward creating a unified field theory: ""a new theory of space with a view to unification of all forms of activity that fall within the sphere of physics, giving them a common explanation"" (PMM416). The task of unifying nuclear, electromagnetic, and gravitational force is nowadays by many considered the holy grail of theoretical physics.Maxwell was the first to develop such a theory when he described the forces of electricity and magnetism as the single force electromagnetism. After Einstein had completed his general theory of relativity (a field theory for gravitation), he turned his attention towards generalizing his theory even further to include Maxwell's theory. Even though Einstein never succeeded in completing this task, in the way that he finished his earlier theories, he pioneered and explored many areas of this subject. ""It had been repeatedly observed that Einstein's general theory of relativity necessitated a pluralistic explanation of the universe. In 1925 he announced that he had resolved this difficulty but the announcement was premature. In 1928 he attacked the problem once more, only to find that Riemann's conception of space, on which the general theory was based, would not permit of a common explanation of electromagnetic and gravitational phenomena. In a series of papers [the present] devoted to the development of 'A Uniform Theory of Gravitation and Electricity' he outlined a new theory of space with a view to unification of all forms of activity that fall within the sphere of physics, giving them a common explanation. All that would then remain to complete a scientific unison is the correlation of the organic and inorganic"".PMM 416Barchas 586‎

‎Einheitliche Feldtheorie von Gravitation und Elektrizität (+) Neue Möglichkeit für eine einheitliche Feldtheorie von Gravitation und Elektrizität (+) Zur einheitlichen Feldtheorie (+) Einheitliche Feldtheorie und Hamiltonsches Prinzip - [PMM 416 - A NEW THEORY OF GRAVITATION]‎

‎Berlin, Königlich Akademie der Wissenschaften, 1925-1929. 1. Einheitliche Feldtheorie von Gravitation und Elektrizität., 1925, pp. 414-419. Uncut, unopened n the original printed wrappers. missing small parts of spine and upper part of front wrapper detached, otherwise fine. (Weil 147 / Boni 155).2. Neue Möglichkeit für eine einheitliche Feldtheorie von Gravitation und Elektrizität. Offprint: S. B. preuss. Akad. Wiss., 1928, pp.235-245. In the original yellow wrappers. Very fine and clean. (Weil 162/ Boni 175).3. Zur einheitlichen Feldtheorie. Offprint: S. B. preuss. Akad. Wiss., 1929, pp.2-7. In the original yellow wrappers. Very fine and clean. (Weil 165/ Boni 183).4. Einheitliche Feldtheorie und Hamiltonsches Prinzip. Offprint: S. B. preuss. Akad. Wiss., 1929, pp.156-159. In the original yellow wrappers. Very fine and clean. (Weil 166/ Boni 184).‎

‎Fine collection, three in offprint and one in the original printed wrappers, of the four papers that together constitute Einstein's attempt towards creating a unified field theory: ""a new theory of space with a view to unification of all forms of activity that fall within the sphere of physics, giving them a common explanation"" (PMM416). The task of unifying nuclear, electromagnetic, and gravitational force is nowadays by many considered the holy grail of theoretical physics.Maxwell was the first to develop such a theory when he described the forces of electricity and magnetism as the single force electromagnetism. After Einstein had completed his general theory of relativity (a field theory for gravitation), he turned his attention towards generalizing his theory even further to include Maxwell's theory. Even though Einstein never succeeded in completing this task, in the way that he finished his earlier theories, he pioneered and explored many areas of this subject.""It had been repeatedly observed that Einstein's general theory of relativity necessitated a pluralistic explanation of the universe. In 1925 he announced that he had resolved this difficulty but the announcement was premature. In 1928 he attacked the problem once more, only to find that Riemann's conception of space, on which the general theory was based, would not permit of a common explanation of electromagnetic and gravitational phenomena. In a series of papers [the present] devoted to the development of 'A Uniform Theory of Gravitation and Electricity' he outlined a new theory of space with a view to unification of all forms of activity that fall within the sphere of physics, giving them a common explanation. All that would then remain to complete a scientific unison is the correlation of the organic and inorganic"".PMM 416Barchas 586Weil 147, 162, 165 & 166.‎

‎Leçons élémentaires sur la gravitation d'après la théorie d'Einstein , dans la collection Actualités Scientifiques (Relativité générale)‎

‎Gauthier-Villars , Actualités Scientifiques Malicorne sur Sarthe, 72, Pays de la Loire, France 1921 Book condition, Etat : Bon broché, sous couverture imprimée éditeur grise In-8 1 vol. - 97 pages‎

‎ 1ere édition, 1921 Contents, Chapitres : 1. Rappel de quelques propositions d'analyse, de géométrie et de mécanique : Calcul des variations - Les géodésiques, l'élément linéaire - Dynamique - Orbites képleriennes - Principe de moindre action - Fonctions des forces dépendant des vitesses, dérivation covariante - 2. L'univers, le principe de relativité : L'univers, méthode de Minkowski - Relativité dans le cas des mouvements uniformes - 3. La gravitation d'après Einstein, les rayons lumineux : La fonction de Lagrange dans le champ solaire - Orbites planétaires et cométaires - Les rayons lumineux dans le champ de gravitation - Errata infime petit manque de 1 cm au bas du dos de la couverture qui est sinon en bon état, bords des plats à peine brunis, intérieur sinon propre, papier légèrement jauni, cela reste un bon exemplaire de cette étude de E.-M. Lémeray, une des premières en langue française sur la relativité généralisée et la gravitation einsteinienne qui a été présentée en 1915‎

‎La gravitation thermodynamique et ses conséquences. La précision des équinoxes et l'inversion océanique. Premiers éléments de thermodynamique céleste‎

‎Paris, Fischbacher, 1925, in-8, 216 pages, exemplaire broché, Seconde édition, la première paru en 1921, de cet ouvrage dans lequel Vincent remet en cause la théorie de la gravitation de Newton, mais aussi la Mécanique Céleste de Laplace : "Cet ouvrage a pour but d'expliquer la gravitation par la chaleur solaire, transformée en énergie mécanique [...] La théorie thermodynamique de la gravitation se place à peu près sur le terrain de la science naturelle. Elle n'a recours qu'à une seule hypothèse : la résistance de l'éther". Exemplaire entièrement non coupé, à l'état de neuf. 216 pages ‎

‎Principes mathématiques de la théorie de la gravitation -- EDITION ORIGINALE‎

‎P., Gauthier-Villars, 1931, un volume in 8, broché, couverture imprimée, (petit manque de papier à la partie inférieure du premier plat de couverture), 6pp., 62pp., (1)‎

‎---- EDITION ORIGINALE ---- ENVOI DE L'AUTEUR ---- Les systèmes de référence et le temps : le solide principal de référence, mouvement relatif d'un ensemble par rapport à son solide principal, conditions d'existence de la gravitation, définition théorique du temps - La loi de la gravitation : l'énergie moyenne d'accélération, détermination de la loi de gravitation - L'énergie cinétique minima considérée comme un invariant cinétique de l'ensemble mobile**8253/M5DEP‎