‎Thé‎

‎"DAVY, HUMPHREY. - UNROLLING THE PAPYRI OF HERCULANEUM‎

‎Some Observations and Experiments on the Papyri found in the ruins of Herculaneum. Read March 15, 1821.‎

‎(London, W. Bulmer and W. Nicol, 1821). 4to. No wrappers as extracted from ""Philosophical Transactions"" 1821 - Part II. Pp. 191-208 a. 8 engraved plates. Some offsetting to p. 208 from plate. Clean and fine.‎

‎Firts appearance of the paper which describes Davy's attempt to unroll the papyri scrolls of Herculaneum by using chlorine to decompose the gummy matter holding them together. His attempts were not very successfull.‎

Referenz des Buchhändlers : 43165

‎"DAVY, HUMPHRY - THE DISCOVERY OF HYDROGEN TELLURIDE.‎

‎The Bakerian Lecture for 1809. On some new Electrochemical Researches, on various Objects, particularly the metallic Bodies, from the Alkalies, and Earth, and on some Combinations of Hydrogene. Read November 16, 1809.‎

‎(London, W. Bulmer and Co., 1810). 4to. No wrappers as extracted from ""Philosophical Transactions"" 1810 - Part I. Pp. 16-74 and 2 engraved plates showing Davy's electrochemical apparatus for decomposing substances. The plates dampstained. Text fine and clean.‎

‎First appearence of this historical chemical paper, Davy' fifth Bakerian Lecture, in which he announced his discovery of hydrogen telluride.""Mr. Davy having from the commencement of his electro-chemical researches, communicated the several steps of his progress to the Society (The Royal Society), takes the present opportunity of reporting the results of his further inquiries under four principal heads. First, on the nature of the metals of the fixed alkalis. Second, on the nature of Hydrogen and composition of ammonia. Thirdly, on the metals of the earth"" and Fourthly he makes a comparison between the antiphlogistic doctrine, and a modified phlogistic hypothesis.""(Abstract). He further gives arguments for considering potassium and sodium, which he discovered in 1808, as a element.""Humphry Davy was one of the most brilliant chemists of the early nineteenth century. His early study of nitrous oxide brought him his first reputation, but his later and most importent investigations were devoted to electrochemistry. Following Galvani's experiments and the discovery of the voltaic pile, interest in galvanic electricity had become widespread. The first electrolysis by means of the pile was carried out in 1800 by Nicholson and Carisle, who obtained oxygen and hydrogen from water. Davy began to examine the chemical effects of electricity in 1800, and his numerous discoveries were presented in his Bakerian lectures."" - Wheeler Gift: 2518.‎

Referenz des Buchhändlers : 42219

‎"DALTON, JOHN. - THE FIRST PAPER ON MODERN ATOMIC THEORY - GERMAN EDITION.‎

‎Ueber die Absorption der Gasarten durch Wasser und andere tropfbare Flüssigkeiten. Frei bearbeitet von Gilbert. Mit einigen Zusätzen.‎

‎(Halle, Rengerschen Buchhandlung, 1808). Without wrappers as published in ""Annalen der Physik. Herausgegeben von Ludwig Wilhelm Gilbert"", Bd. 28, Viertes Stück. The entire issue offered (=Heft 4). Titlepage to vol. 28 (small stamps on verso). Pp. 377-496 a. 3 engraved plates. Dalton's paper: pp. 397-416 a. 1 engraved plate showing apparatus.‎

‎First appearence i German of Dalton's epoch-making paper in which is contained THE FIRST CLEAR STATEMENT OF MODERN ATOMIC THEORY and having the FIRST LIST OF ATOMIC WEIGHTS ""Verhältniss der Gewichte der kleinsten Theilschen von gasförmigen und andern Körpern."" (Table of the relative weights of the ultimate particles of gaseous and other bodies). The paper offered is a free translation of Dalton's paper ""On the Absorption of Gases by Water and Other Liquids"", published 1805 in ""Memoirs of the Literary and Philosophical Society of Manchester"".""The paper was read to the Manchester Philosophical Society by Dalton in 1803 and printed in 1805. The appended table in this paper is the first list of atomic weights. Dalton, in this publication, took the law which William henry had recently enunciated (that the amount of of gas absorbed by a liquid is proportional to the pressure) and extended it to apply to mixtures of gases, using his own law of partial pressures."" (Leicester & Klicktein ""A Source Book in Chemistry"", p. 258).Parkinson ""Breakthroughs"", 1803 C.- Smyth No. 38.‎

Referenz des Buchhändlers : 43629

‎"DALTON, JOHN. - THE REBIRTH OF THE ATOMIC THEORY.‎

‎Weitere Erörterung einer neuen Theorie über die Beschaffenheit gemischer Gasarten.‎

‎(Halle, Rengerschen Buchhandlung, 1803). Without wrappers as published in ""Annalen der Physik. Herausgegeben von Ludwig Wilhelm Gilbert"", Bd. 13, Viertes Stück. Pp. 385-504 a. 1 engraved plate. (The entire issue offered). Dalton's paper: pp. 438-445.‎

‎First German version of one of the founding papers in which he formulated his famous gas laws and raised the foundation of the atomic theory in chemistry.Smyth ""John Dalton... A Bibliography"", No 29.‎

Referenz des Buchhändlers : 49442

‎"DE GEER, (CHARLES). - ON THE GLOW-WORM.‎

‎Mémoire sur un Ver luisant femelle, et sur sa Transformation.‎

‎(Paris, Imprimerie Royale, 1755). 4to. Extract from ""Mémoires fe Mathematique et de Physique, Présentés à l'Academie des Sciences par divers Savans"", Tome II. Pp. 261-275 and 1 engraved plate.‎

‎First printing of De Geer's study of the Glow-worm.‎

Referenz des Buchhändlers : 45937

‎"DE VRIES, HUGO. - THE REDISCOVERY OF MENDEL'S LAWS - THE BIRTH OF MODERN GENETICS.‎

‎Sur la loi de disjonction des hybrides. (The Law of Segregation of Hybrides - Das Spaltungsgesetzt der Bastarde).‎

‎Paris, Gauthier-Villars, 1900. 4to. No wrappers. In: ""Comptes Rendus Hebdomadaires des Séances de L'Academie des Sciences"", Tome 130, No 13. Titlepage to tome 130 a. pp. (809-) 864. (Entire issue offered). De Vries paper: pp. 845-847. Rather poor paperquality, fragile. Small nicks to margins of titlepage.‎

‎First appearance of a milestone paper in genetics being the ""REDISCOVERY"" OF MENDEL'S LAWS OF HEREDITY"" - This paper, together with the two other papers from the same year by Carl Correns and Erich Tschermak, laid the foundations of a new scientific discipline that, in 1906, was given the name ""genetics"", and less than a century later, rose to become the leading science in Western society. This French announcement was published 4 days before his longer paper ""Das Spaltungsgesetzt der Hybride"", in which Mendel is mentioned.De Vries completed most of his hybridization experiments without knowing about Mendel's work. Based on his own results, de Vries drew the same conclusions as Mendel. De Vries published his work in 1900, first in French then in German. In the French report there was no mention of Mendel, but this was amended by de Vries in the German paper. It is possible that de Vries read Mendel's paper before he published his own, and included Mendel's name in the later printing when he realized that other people also knew about Mendel's work. De Vries may have thought that his own conclusions were superior to Mendel's. ""During the 1880s, de Vries became interested in heredity. In 1889 he published Intracellular Pangenesis, in which he critically reviewed previous research on inheritance and advanced the theory that elements in the nucleus, ‘pangenes’, determine hereditary traits. To investigate his theories, he began breeding plants in 1892 and by 1896 had obtained clear evidence for the segregation of characters in the offspring of crosses in 3:1 ratios. He delayed publishing these results, proposing to include them in a larger book, but in 1900 he came across the work of Gregor Mendel, published 34 years earlier, and announced his own findings. This stimulated both Karl Correns and Erich von Tschermak-Seysenegg to publish their essentially similar observations."" (Oxford Dictionary of Scientists).Parkinson ""Breakthroughs"" 1900 B. - PMM 356 (the note).‎

Referenz des Buchhändlers : 48208

‎"DEBYE, PETER. - THE DEBYE MODEL.‎

‎Zur Theorie der spezifischen Wärmen.‎

‎(Leipzig, Barth), 1912. No wrappers. In: ""Annalen der Phsyik"", 4th series, vol. 39, No. 14. Pp. 705-896 (entire issue offered). debye's paper: pp. 789-839. Clean and fine.‎

‎First edition""In his second outstanding paper (the offered item) Debye treated a solid as a system of vibrating atoms and modified Einstein's theory of specific heats, which had been only partially successful. He showed that the solid could be characterized by a complete spectrum of eigen-frequencies and that the specific heat of a monatomic solid was a universal function of the ratio theta/T, were theta is a tempature characteristic of the particular solid and T is the absolute tempature. Now commonly called the Debye temperature, theta could be calculated from the elastic constants of the solid. The Debye equation, involving the then recently developed quantum theory, gave agreement with observed specific heat values. Aside from a numerical factor, it differed from the Einstein equation in containg both the compressibility and and Poisson's ratio."" - Dictionary of Scientific Biography, volume 3, p.619.‎

Referenz des Buchhändlers : 49780

‎"DIRICHLET, G. LEJEUNE. - THE INTRODUCTION OF THE ""DIRICHLET SERIES""‎

‎Recherches sur diverses applications de L'Analyse infinitésimale à la Théorie des Nombres. Premiere - Seconde artie. (2 Papers).‎

‎Berlin, G. Reimer, 1839-40. 4to. Without wrappers. Extracted from: ""Journal für die reine und angewandte Mathematik. Hrsg. von A.L. Crelle"", Bd. 19 a. Bd. 21, pp. 324-369 a. pp. 1-12.. 4 leaves in part 1 with browning, due to the poor paperquality.‎

‎First appearance of this importent paper in which he introduces the ""Dirichlet series"", applicating analysis to the theory of numbers. The paper is especially known for its central use of the limiting proces.‎

Referenz des Buchhändlers : 41972

‎"DIRAC, P.A.M. (PAUL ADRIEN MAURICE). - THE RADIATION THEORY, THE BIRTH OF QUANTUM ELECTRODYNAMICS‎

‎The Quantum Theory of Emission and Absorption of Radiation. (+) The Quantum Theory of Dispersion. (2 Papers).‎

‎London, Harrison And Sons, Ltd., 1927. Royal8vo. Contemp. full cloth. A small stamp on verso of titlepage. In: ""Proceedings of the Royal Society of London"", Series A, Vol. 114. VI,IX,748 pp. (entire volume offered). Dirac's papers: pp. 243-265 a. pp. 710-728. Clean and fine.‎

‎First appearance of these milestone papers in Quantum Physics, constituting the first step in Quantum Field Theory and the invention of the Second Quantifization Method. By these papers Dirac ""gave the foundation for that theory, quantum electrodynamics""(Pais).""A New Radiation Theory. Dirac liked his transformation theory because it was the outcome of a planned line of research and not a fortuitous discovery. He forced his future investigations to fit it. The first results of this strategy were almost miraculous. First came his new radiation theory, in February 1927, which quantized for the first time James Clerk Maxwell’s radiation in interaction with atoms. Previous quantum-mechanical studies of radiation problems, except for Jordan’s unpopular attempt, retained purely classical fields. In late 1925 Jordan had applied Heisenberg’s rules of quantization to continuous free fields and obtained a light-quantum structure with the expected statistics (Bose Einstein) and dual fluctuation properties. Dirac further demonstrated that spontaneous emission and its characteristics—previously taken into account only by special postulates—followed from the interaction between atoms and the quantum field. Essential to this success was the fact that Dirac’s transformation theory eliminated from the interpretation of the quantum formalism every reference to classical emitted radiation, contrary to Heisenberg’s original point of view and also to Schrödinger’s concept of ? as a classical source of field.This work was done during Dirac’s visit to Copenhagen in the winter of 1927. Presumably to please Bohr, who insisted on wave-particle duality and equality, Dirac opposed the ""corpuscular point of view"" to the quantized electromagnetic ""wave point of view."" He started with a set of massless Bose particles described by symmetric ? waves in configuration space. As he discovered by’ playing with the equations, ’ this description was equivalent to a quantized Schrödinger equation in the space of one particle"" this’ second quantization’ was already known to Jordan, who during 1927 extended it into the basic modern quantum field representation of matter. Dirac limited his use of second quantization electromagnetic to radiation: to establish that the corpuscular point of view, once brought into this form, was equivalent to the wave point of view.""(DSB).‎

Referenz des Buchhändlers : 47023

‎"DRAPER, JOHN W. - THE ""TITHONIC RAYS"" AS THE FOURTH IMPONDERABLE AGENT.‎

‎On the Decomposition of Carbonic Acid Gas and the Alkaline Carbonates, by the Light of the Sun"" and on the Tithonotype.‎

‎(London, 1843). No wrappers In: ""The London, Edinburgh and Dublin Philosophical Magazine and Journal of Science"", Third Series, September issue 1843. Pp. 161-240 (entire issue offered). Draperspaper: pp. 161-176.‎

‎The paper appeared the same year in ""Proceedings Am. Phil. Soc."" and it is an importent paper on the chemical action of light, the new science of photochemistry in which Draper made pioneering work, showing that it is only certain light rays of a definite wavelenght that is absorped, and it is this absorption that produces the photochemical effect.‎

Referenz des Buchhändlers : 44759

‎"DURKHEIM, ÉMILE. - THE SUICIDE-STUDY.‎

‎Le Suicide. Étude de Sociologie.‎

‎Paris, Baillière et Cie Félix Alcan, 1897. 8vo. Contemp. hcloth. Gilt spine with gilt lettering. XII,462 pp. Small stamps on halftitle and title-page. Internally clean and fine.‎

‎First edition of this classical study of suicide by ""the father of modern sociology"".‎

Referenz des Buchhändlers : 50658

‎"DUPERREY, L.I. - MAPPING THE GILBERT ISLANDS.‎

‎Notice sur la Configuration de l'équateur magnétique, conclue des observations faites dans la campagne de la Corvette la Coquille.‎

‎(Paris, Crochard, 1830). No wrappers. In: ""Annales de Chimie, ou Recueil de Mémoires concernant la Chemie"" 2e Series, Tome 45, Cahier 3. Pp. 337-448 a. 1 engraved map (entire issue offered). Duperrey's paper: pp. 371-386. Text with scattered brownspots. Map with a small closed tear in lower left corner, otherwise fine.The map: ""Configuration de LÉquateur Magnétique.... faites dans la campagne de la Corvette de S.M. la Coquille, pendent les années 1822, 1823, 1824 et 1825. Par M.L.I. Duperrey Commandant de L'Expedition"" Left: Dressée par L.I. Duperrey, en 1829. Right corner: Gravée par Ambroise Tardieu. (29x80 cm. (the map-sheet))‎

‎In 1820, the islands were named the Gilbert Islands or îles Gilbert (in French). Duperrey was the first to put together on a map the whole Gilbert Islands archipelago with the name given to it by Admiral Krusenstern after the British Captain Thomas Gilbert, who crossed the archipelago in 1788. Duperrey commanded La Coquille on its circumnavigation of the earth (1822-1825).‎

Referenz des Buchhändlers : 49607

‎"DUMAS, JEAN BAPTISTE ANDRÈ - ANNOUNCING THE LAW OF SUBSTITUTION.‎

‎Recherches de Chimie organique. Lu à l'Academie des Sciences le 13 janvier 1834.‎

‎Paris, Crochard, 1834. No wrappers, as extracted from: ""Annales de Chimie et de Physique, Par MM. Gay-Lussac et Arago."", tome 56, pp.1-150. With titlepage to vol. 56. Titlepage with some browning to corners and some brownspots. Text with scattered brownnspots.‎

‎First printing of this milestone paper in organic chemistry which marks a very importent step toward a complete structural theory of organic chemistry, THE SUBSTITUTION THEORY.""In 1834 Dumas presented a long paper, ""Recherches de Chimie organique"", to the Academy of Sciences in Paris. In this he described chloroform and chloral and explained the mechanism by which chlorine acted upon ethyl alcohol. The paper was published soon afterwards (as offered here) and several years later was reprinted with the addition in the theoretical part of Dumas's theory of metalepsy.""(Leicester & Klickstein ""A Source Book in Chemistry"", p. 320 ff.). - Parkinson ""Breakthrough"" 1834 C. - Partington IV, pp. 360 ff.‎

Referenz des Buchhändlers : 43539

‎"DUMAS, JEAN BAPTISTE-ANDRE & J.S. STAS. - THE ATOMIC WEIGHT OF CARBON ESTABLISHED.‎

‎Recherches sur la véritable poids atomiques du carbone. (Lu à l'Academie des Sciences, le 21 décembre 1840).‎

‎Paris, Fortin, Masson et Cie, 1841. 8vo. Contemp. hcalf, raised bands, gilt spine. Light wear along edges. Small stamps on verso of titlepage. In: ""Annales de Chimie et de Physique"", 3e Series - Tome 1. 512 pp. a. 3 folded engraved plates (showing experimental apparatus).Small stamp to verso of plates. (The entire volume offered). Dumas & Stas' paper: pp. 1-59. Clean and fine.‎

‎First appearance in full of this paper, stating the correct weight of the carbon atom, which had profound influence on the development of organic chemistry. The first announcement (in extrait) came out in Comptes rendus, Tome Xi, 1840.""From 1840 onward he carried out an important revision of the atomic weights of thirty elements. His most valuable contribution in this field was his very precise determination of the atomic weight of carbon (jointly with his pupil Stas) in 1840.2 A previously accepted weight, determined by Berzelius as C = 12.20 (O = 16), was shown to be incorrect. Dumas proved that C = 12±.002 (O = 16) or C = 75 (O = 100). The analysis was made by burning diamond and artificial and natural graphite in oxygen"" the carbon dioxide formed was weighed in potash solution. The results were in close agreement. The ""new"" weight of carbon had a great effect on the progress of organic chemistry.""(DSB).The volume contains further notable papers by Gerhardt et Cahours ""Recherches chimiques sur les huiles essentitielles"", pp. 60-110, by Laurent, Boussingault, Regnault, Dulong, Melloni et al.‎

Referenz des Buchhändlers : 44902

‎"DULONG, (PIERRE) & (ALEXIS) PETIT. - THE ""LAW OF DULONG AND PETIT"" THE CONNECTION BETWEEN ATOMIC WEIGHT AND ATOMIC HEAT ESTABLISHED.‎

‎Recherches Sur la Mesure des Températures et sur les Lois de la communication de la chaleur. Introduction. (+) Suite des Recherches sur la Mesure des Témperatures..... Seconde Partie. Des Lois du Refroidissement. (+) Suite Des Recherches sur la Mesure...‎

‎Paris, Crochard, 1817 a. 1819. Bound in one contemp hcloth (vol. 7) and 1 issue without wrappers. In: ""Annales de Chimie et de Physique, Par MM. Gay-Lussac et Arago."", Vol. 7 and vol. 10, Cahier 4. - 448 pp. a. 2 engraved plates (entire vol. 7 offered) + pp. 337-443 a. 2 engraved plate (entire issue offered, Cahier 4 of vol. 10 with htitle to the vol.). Dulon & Petit's papers: pp. 113-154, pp. 225-264, pp. 337-367 and Vol. X, pp. 395-413.‎

‎First edition of these 4 groundbreaking papers with the first appearance in print of THE LAW OF THE CONSTANCY OF ATOMIC HEAT, i.e. the specific heat multiplied by the atomic weight. The insight had far reaching implications as it showed a new way to Dalton's atomic theory. ""In 1815 Dulong's famous collaboration with the mathematical physicist Alexis Therese Petit began"" it produced three importent memoirs on heat."" (the papers offered here). The 2 first was awarded the price of the Academy in 1818 and was leading up to the last paper in which they formulted the ""Law of the Constancy of product of atomic weight and specific heat""""They (Dulang and Petit) were concerned with the specific heats of elements"" but if these elements really existed as atoms, it seemed possible that there might be a connection between trhe weight of the atom and the amount of heat aquired to raise the temperature of a given weight of that element by a certain amount."" (DSB). ""One of his (Dulong) most importent researches was made in collaboration with Alexis Thérese Petit (1791-1820), with whom he announced the law that the product of atomic weight and specific heat is constant (1819). It rendered a distinct service in fixing atomic weights, especially when these were in question, and enabled Berzelius and later Cannizzaro to arrive at correct atomic weights and the correct number of atoms in molecules."" (Leicester & Klickstein, A source Book in Chemistry 1400-1900, p. 273). Parkinson, Breakthroughs (1819).‎

Referenz des Buchhändlers : 47356

‎"Edited by the Executive Committee"‎

‎ARENA: NO. 3 SEPTEMBER 1961‎

‎London: Centre for Writers in Exile. 1961. 8vo - over 7¾" - 9¾" tall. F First Edition Used. Paperback. Very Good. ARENA: NO. 3 SEPTEMBER 1961. London P.E.N. Centre for Writers in Exile 1961. "Edited by the Executive Committee". Texts in English French and German. Bibliographical references. Stiff gray wrappers printed black; pictorial upper wrapper slight rubbing to wrappers else very good-fine. Scarce.Contains contributions by Storm Jameson E.G. Kostetsky Romain Rolland Paul Tabori et al.; book reviews etc.; noteworthy for the set of poems by Ukrainian exiles translated into German by various people and the upper wrapper illustration by Feliks Topolski. Centre for Writers in Exile paperback‎

Referenz des Buchhändlers : 0744916

‎"EHRENBERG, H. (HERMANN) - THE TEXAS REVOLUTION.‎

‎Freiheitskampf in Texas im Jahre 1836. 4 Theile in einem Bande.‎

‎Leipzig, Otto Wigand, 1844. 12mo. Contemp. full cloth. (original ?). Gilt spine. Gilt lettering. Faint remains of a numbering on lower part of spine. Stamp on title-page. (2),IV,293,(1) pp. and (4) pp. of publisher's announcements. Occassionally faint scattered browning.‎

‎First printing under this title, but it is the second edition of the author's ""Texas und seine Revolution"" 1843. It is the best first-hand account of the Texas revolution.Sabin,22072. - Howes E83.‎

Referenz des Buchhändlers : 57501

‎"EHRENFEST, PAUL. - THE ULTRAVIOLET CATASTROPHE.‎

‎Welche Züge der Lichtquantenhypothese spielen in der Theorie der Wärmestrahlung eine wesentlich Rolle ? (Which Features of the Quantum Hypothesis Play an Essential Role in the Theory of Heat Radiation).‎

‎Leipzig, Johann Ambrosius Barth, 1911. Later full cloth. Stamps on title-page. In ""Annalen der Physik"", Vierte Folge, Band 36. - VIII,1088 pp. and 4 plates. (Entire volume offered). Ehrenfest's paper: pp. 91-118.‎

‎First edition of the paper in which the term ""Ultraviolet Catastrophe"" appeared for the first time. ""Ehrenfest was one of the first to try to understand the significance of the strange new concept of energy quanta that Max Planck had introduced into physics in 1900 in his theory of blackbody radiation. In a series of papers culminating in his major study of 1911 (the paper offered), ""Which Features of the Quantum Hypothesis Play an Essential Role in the Theory of Heat Radiation?,"" Ehrenfest picked out the essentials of the early quantum theory and showed how they fit together. He proved rigorously that the energy of electromagnetic vibrations cannot take on all values - cannot vary continuously - if the total energy of the blackbody radiation in an enclosure is to be finite: Planck’s assumption that energy is a discrete variable was, therefore, logically necessary and not just sufficient. Ehrenfest also showed, by an analysis of Wien’s displacement law, that the ratio of energy to frequency was the only variable that could be quantized for a harmonic oscillator, if one wanted to maintain the statistical interpretation of entropy.""(DSB).‎

Referenz des Buchhändlers : 53367

‎"EINSTEIN, A. - THE SINGULARITY PROBLEM - ASSOCIATION COPY.‎

‎Demonstration of the Non-Existence of Gravitational Fields with a non-vanishing total Mass free of Singularities.‎

‎Tucuman, Argentina, 1941. Royal8vo. Orig. printed wrappers. Offprint from ""Revista. Universidad Nacional de Tucuman"", Series A Matematicas y Fisica Teorica, Vol. 2, Diciembre de 1941, Nos 1 y 2. Pp. 11-15. Fine and clean. This copy has belonged to Abraham Pais (1918-2000) - the famous Einstein scholar, theoretical physicist and Einsteins collegue at Princeton - and having his name on top of the frontwrapper ""A Pais""‎

‎First edition of a scarce paper in the offprint version. The paper ""represents the basis of the one written by the same author in collaboration with Wolfgang Pauli in 1943, in which, by following analogous lines, the proof of the non-existence of regular particle-type solutions was generalized to the case of cilyndrical geometries in Kaluza-Klein theory (Einstein & Pauli, 1943). Besides, other generalizations were subsequently presented. The (non)-existence of such solutions in classical unified field theory was undoubtedly an important criterion leading Einstein's investigations.""(Galvagno and Giribet).""In his search for a unified field theory that could undercut quantum mechanics, Einstein considered five-dimensional classical Kaluza-Klein theory. He studied this theory most intensively during the years 1938-1943. One of his primary objectives was finding a non-singular particle solution. In the full theory this search got frustrated, and in the x5-independent theory Einstein, together with Pauli, argued it would be impossible to find these structures."" (Jeroen van Dongen).Weil: 208. - Boni: 243.‎

Referenz des Buchhändlers : 46476

‎"EINSTEIN, A., L. INFELD, and B. HOFFMANN. - THE ROUND OFF OF GENERAL RELATIVITY - ASSOCIATION COPY.‎

‎The gravitational Equations and the Problem of Motion. (Part I). (Received June 16, 1937). (+) II. (Received May 29, 1939). 2 Papers (Paper II only Einstein and Infeld).‎

‎(Princeton, NJ.), Annals of Mathematics, 1938 a. 1940. Both papers in orig. printed wrappers. Offprints from ""Annals of Mathematics"", Vol. 39, No. 1, january, 1938 and Vol. 41, No. 2, April, 1940. Pp. 65-100 and pp. 455-464. Both clean and fine. This copy has belonged to Abraham Pais (1918-2000) - the famous Einstein scholar, theoretical physicist and Einsteins collegue at Princeton - and having his name on top of both frontwrappers ""A Pais"".‎

‎First editions, in the scarce offprint versions, of Einstein's last and highly important contributions to General relativity, and in which is shown that the equation of motion follows directly from the field equation that defined the geometry.""Einstein's last importent contribution to general relativity deals again with the problem of motion. It is the work done with Leopold Infeld and Banash Hoffmann on the N-body problem of motion. In these papers, the gravitational field is no longer treated as external. Instead, it and the motion of its (singular) sources are treated simultaneously. Anew approximationscheme is introduced in which the fields are no longer necessarily weak but in which the source velocities are small compared with the light velocity .... The equations obtained have found use in situations where Newtonian interaction must be included. '(These equations) are widely used in analyses of planetary orbits in the solarsystem. For example, the Cal Tech Jet Propulsion Laboratory uses them, in modified form, to calculate ephmerides for high-precision tracking of planets and spacecraft.""(Pais ""Subtle is the Lord"", p. 290-91).""The problem of the equation of motion of bodies is the following. The 1916 theory had a classical structure in the sense that there were both field equations (the curvature of space-time is determined by the mass and motion of bodies in space-time) and equations of motion of bodies (the world line of small mass is a geodesic). Are these two statements really separate? If the field equations were linear, they indeed would be. They are not linear, however, and Einstein showed (in the papers offered) that if matter is represented by a point singularity of the metric field, these singularities are located on world lines that are geodesics of space-time, provided its metric satisfies the equation of general relativity.""(DSB).Weil: 202 a. 295 (both with an asterix denoting a major paper). - Boni: 236 a. 236.1.‎

Referenz des Buchhändlers : 46475

‎"EINSTEIN, A. & N. ROSEN. - THE SILBERSTEIN-EINSTEIN CONTROVERSY.‎

‎Two-Body Problem in General Relativity Theory.‎

‎Lancaster, American Physical Society, 1936. 4to. In: ""The Physical Review"", Vol. 49, Second Series. X,971 pp. (Entire volume offered). Einstein & Rosen's paper: pp. 404-405.‎

‎First printing of Einstein and Rosen's answer to Silberstein's critique of Einstein's Theory of Relativity ..""Ludwik Silberstein, who initially was a supporter of the special theory, objected at different occasions against general relativity. In 1920 he argued that the deflection of light by the sun, as observed by Arthur Eddington et al. (1919), is not necessarily a confirmation of general relativity, but may also be explained by the Stokes-Planck theory of complete aether drag. However, such models are in contradiction with the aberration of light and other experiments (see ""Alternative theories""). And in 1935, Silberstein claimed to have found a contradiction in the Two-body problem in general relativity. However, also this claim was refuted by Einstein and Rosen (1935) (in the paper offered).""(Wikipedia).‎

Referenz des Buchhändlers : 47073

‎"EINSTEIN, ALBERT. - THE FIRST EXPLICIT STATEMENT OF THE ENERGY-MASS EQUATION !!‎

‎Über die vom Relativitätsprincip geforderte Trägheit der Energie. (On the Inertia of Energy Required by the Relativity Principle).‎

‎Leibzig, Johann Ambrosius Barth, 1907. 8vo. Contemp. hcalf. Spine gilt and with gilt lettering. Slightly rubbed and light wear to spineends. In ""Annalen der Physik"", Vierte Folge, Band 23. VIII,1000 pp. a. 4 plates. (The entire volume offered). Einstein's paper: pp.371-384. Stamps on titlepage (Allgemeine Electricitäts-Gesellschaft a. AEG Forschungsinstitut). Internally clean.‎

‎First edition of the first explicit statement of Einstein's energy-mass equation E=mc2.Nearly all descriptions of Einstein's scientific work state that the mass-energy equivalence E=mc2 was first formulated in Einstein's 1907 review paper 'Über das Relativitätsprinzip und die aus demselben gezogenen.' published in 'Jahrbuch der Radioaktivität und Elektronik' (see Weil no. 21 and Dictionary of Scientific Biography, vol. 4 pp.323 for examples). However, in his paper 'Über die von Relativitätsprincip geforderte Trägheit der Energie' [the offered paper] which predates the former mentioned by six months, Einstein gave a clear statement of the mass-energy equivalence E=mc2. See Lanczos: The Einstein Decade, pp.149-150 and 153 as well as Volume 2 of 'The Collected Papers of Albert Einstein' pp. 428.Einstein's first paper regarding the relation E=mc2 is his fourth 1905 paper, 'Ist die Trägheit eines Körpers von seinem Energieinhalt abhängig?'. In this short paper Einstein showed that a body releasing the energy E in the form of radiation will have its mass decreased by E/c2, and concluded that the mass of a body is a measure of its energy content, e.g., that all energy has mass. The next time Einstein returns to the subject is in his 1906 paper 'Das Prinzip von der Erhaltung der Schwerpunkts Bewegung und die Trägheit der Energie.'. Here Einstein concluded that one must either ascribe the inertial mass E/c2 to any form of energy E or else give up the fundamental law mechanics regarding conservation of the motion of the center of gravity. Then finally in the 1907 paper 'Über die von Relativitätsprincip geforderte Trägheit der Energie.' [the offered paper] Einstein makes the decisive step of assuming that all mass has energy. On page 382 Einstein considers the total energy of a moving mass point as the sum of its kinetic energy and its rest energy. In classical mechanics it is most convenient to set the second term to zero but in relativistic mechanics one obtains the simplest expression by setting the rest energy equal to mc2. Einstein then continues to show that this stipulation cannot lead to a contradiction in any relativistic argument. In a footnote on page 382 Einstein states for the first time the equation E=mc2 and mentions that this equation is the expression of the principle of the equivalence of mass and energy - see Volume 2 of 'The Collected Papers of Albert Einstein' pp. 428.The volume contains another paper by Einstein ""Bemerkungen zu der Notiz von Hrn. Paul Ehrenfest: ""Die Translation deformierbarer Elektronen und der Flächensatz"""", pp.206-208. - Weil No. 18. Further with 2 importent papers by Max v. Laue.Collected Works, Doc. 45. Weil 19. Boni 19.‎

Referenz des Buchhändlers : 53408

‎"Erik the Black" Asorson‎

‎Pacific Crest Trail Atlas Central California‎

‎Sugar Loaf CA: Blackwoods Press 2009. Rated "fair" due to some tea stains to top outer edges of first pages some minor soiling to other page edges general use-wear and some pencil marking on the inside of the back cover. However the book is complete maps are in good shape with no marking or writing on them and the binding is secure. The book is used but quite servicable. "New & Improved" Maps are in color. Carefully packed for safe shipping. Soft Cover. Good. Blackwoods Press Paperback‎

Referenz des Buchhändlers : 000451

‎"EULER, LEONHARD. - THE EULER-FERMAT THEOREM PROVED.‎

‎De Superficie Conorum Scalenorum, aliorumqve corporum conicorum. (On the surface of scalene cones and of other conic bodies). (+) Theoremata circa divisores numerorum. (Theorems on divisors of numbers). (2 papers by Euler).‎

‎(Petropoli (St. Petersbourg), 1750). 4to. Uncut, without wrappers. Extracted from ""Novi Commentarii Academiae Scientiarum Imperialis Petropolitanae"", Tom. I. ad Annum 1747 et 1748. Pp. 3-19 a. 1 engraved plate., and pp. 20-48.‎

‎First printing of both papers. The second is important as it contains Euler'is second proof of the Euler-Fermat theorem, which Euler presents as a consequence of the theorem that (a+b)p = ap+bp (mod p). This paper also includes results about possible divisors of a2n + b2n, and Euler uses this to show again that F5 is not prime. - Enestroem No. 133 a. 134.‎

Referenz des Buchhändlers : 42900

‎"EULER, LEONHARD. - INTRODUCING ""THE EULER CONSTANT"" AND ""THE FUNCTION NOTATION""‎

‎De Linea celerrimi descensus in Medio qvocunqve resistente. (On the curve of fastest descent in whatever resistent medium). (+) De progressionibus harmonicis observationes. (On harmonic progressions). (+) De infinitis curvis iusdem generis seu methodu...‎

‎(Petropoli, St. Petersburg, Typis Academiae, 1740). 4to. No wrappers. In: ""Classes Prima continens Mathematica. Commentarii Academiae Scientiarum Imperialis Petropolitanae"", Tomus VII ad Annum 1735, &..... Euler's papers: pp. 135-149, 150-161, 174-183 a. 184-200 and 2 engraved plates. Clean and fine.‎

‎First printing of 4 importent early papers by Euler. Enestroem: E42, E43, E44 a. E45.E42: This is Euler's second paper on the ""Brachistochrone problem"".E43. Here Euler introduces THE EULER CONSTANT. ""The Euler-Mascheroni constant (also called Euler's constant) is a mathematical constant recurring in analysis and number theory, usually denoted by the lowercase Greek letter gamma.""E44: ""This is an extensive paper that develops a method for finding a family of curves arising from the constant of integration of dz = Pdx, which is treated as the second variable"" the rudiments of partial differentiation are presented, and there is an extensive survey of homogeneous functions centred around what is now know as Euler's Theorem for such functions. The origins of this paper would seem to be Proposition 15 of Vol. 2 of the Mechanica, relating to families of tautochronous curves, where an integration relying on Euler's Theorem is required."" (Ian Bruce).E45: Here Euler introduces the FUNCTION NOTATION f(x). ""This is an equally extensive paper that continues the development of methods for finding a family of curves arising from the constant of integration of dz = Pdx, which is treated as the second variable. A method is developed for finding the modular equation for the first order equation that is extended to cover a number of cases"" this in turn is extended to second and higher orders. The method involves finding suitable functions to integrate, starting from a part of the modular equation that is integrable, so that the whole equation is of this form. This paper is noteworthy in addition as it seems to be the first in which the function notation, albeit in a slightly different form from the modern meaning, is introduce. I have not been able to check all the equations at this stage.""(Ian Bruce).This section also contains DANIEL BERNOULLI: Demonstrationes theorematum svorum de oscillationibus corporum filo flexili connexorum et catenae verticaliter suspensae. Pp. 162-173.‎

Referenz des Buchhändlers : 50926