‎Äther und Relativitäts-Theorie. Rede gehalten am 5. Mai 1920 an der Reichs-Universität zu Leiden‎

‎Berlin, Julius Springer, 1920, in-8, 15 pp, Broché, couverture agrafée de l'éditeur, Édition originale de ce discours prononcé par Einstein (1879-1955) le 5 mai 1920 à la Reichsuniversität de Leyde, à l'occasion de son entrée en fonction en tant que professeur invité. Le savant y expose comment la conception ancienne de l'éther a laissé la place à la notion de gravitation. Cachet ex-libris du révolutionnaire Russe et bibliophile Marcel Bekus (1888-1939). Bon exemplaire. Couverture insolée, agrafes oxydées. Hans-Josef Küpper, Verzeichnis Der Wissenschaftlichen Publikationen Albert Einsteins von 1901-1922 [en ligne]. Weil, 111. Couverture rigide‎

‎Bon 15 pp.‎

‎Über die Entwickelung unserer Anschauungen iiber das Wesen und die Konstitution der Strahlung.‎

‎Braunschweig, Friedrich Vieweg und Sohn, 1909. 8vo. Bound in contemporary half calf with gilt lettering to spine. In ""Verhandlungen der Deutsche Physikalische Gesellschaft"", 11 Jahrgang, 1909. (Reprinted same year in ""Physikalische Zeitschrift 10""). Bound with ""Berichte der Deutschen Physikalischen Gesellschaft"", 7 Jahrgang, 1909. Capitals and hindges with wear. Internally very fine and clean. Pp. 482-500. [Entire volume: (2), 749, (3), VII, 450 pp.].‎

‎First printing of Einstein's famous lecture in which he anticipated the discovery of black-body radiation and famously stated that: ""the next phase in the development of theoretical physics will bring us a theory of light, which may be regarded as a sort of fusion of the undulatory and emission theories of light"" (The present paper, Pp. 482-3). He furthermore stated that the electromagnetic fields that constitute light will no longer appear to be states of a hypothetical medium, but rather independent entities emitted by the sources of light, exactly as in the Newtonian emission theory of light. The paper was delivered as a lecture before the 81st assembly of the 'Gesellschaft Deutscher Naturforscher' in Salzburg on 21st September 1909.The occasion was important for Einstein since he for years had been working in scientific exile. Among those who attended Einstein's lecture were some of the world's foremost physicists such as" Max von Laue, Max Born, Arnold Sommerfeld. All published papers of their own in the present volume. Weil No. 30.‎

‎Über die Möglichkeit einer neuen Prüfung des Relativitätsprinzips.‎

‎(Leipzig, Barth, 1907). 8vo. Extract from ""Annalen der Physik IV,23"", pp.197-198. Some slight browning to leaves.‎

‎First edition. Weil No. 17. ‎

‎Über die Möglichkeit einer neuen Prüfung des Relativitätsprinzips.‎

‎(Leipzig, Barth, 1907). 8vo. Extract from ""Annalen der Physik IV,23"", pp.197-198.‎

‎First edition in the periodical form. - Weil No. 17. ‎

‎Über die vom Relativitätsprincip geforderte Trägheit der Energie. - [THE FIRST EXPLICIT STATEMENT OF THE ENERGY-MASS EQUATION]‎

‎Leibzig, Johann Ambrosius Barth, 1907. 8vo. In contemporary full cloth with gilt lettering to spine. In ""Annalen der Physik"", Vierte Folge, Band 23. Entire volume offered. Ex-libris pasted on to top right corner of pasted down front free end-paper. Light rubbing to extremities, a very fine and clean copy (not an ex-library copy). Pp.371-384. [Entire volume: VIII, 1000 pp. + 4 plates].‎

‎First edition of the first explicit statement of Einstein's landmark 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.Collected Works, Doc. 45. Weil 19. Boni 19.‎

‎Über eine Methode zur Bestimmung des Verhältnisses der transversalen und longitudinalen Masse der Elektrons:‎

‎Leipzig, J. A. Barth, 1906. Contemp. hcloth. Light wear to edges. A small tear at upper part of fronthinge. ""Annalen der Physik. Vierte Folge. Band 21. Hrsg. von W.Wien und M. Planck"". VIII,1056 pp.and 9 plates. Einstein paper: pp. 583-86. Internally clean and fine. The whole volume offered.‎

‎First edition. Einsten describes in this paper ""Method for the determination of the ratio of the transversal to the longitudinal mass of the electron"", an apparatus which would make it possible to determine with great accuracy the law according to which the mass of the electron changes with the velocity. - Weil No 14.‎

‎Über einen Satz der Wahrscheinlichkeitsrechnung und seine Anwendung in der Strahlentheorie (Together with L. Hopf) (Withbound:) Statistische Untersuchungen der Bewegung eines Resnators in einem Strahlungsfeld (Withbound:) Theorie der Opaleszenz von ...‎

‎Leipzig, J.A. Barth, 1910. Contemp. hcalf. Spine gilt, a fs scratches to spine. VIII,1584 pp. and 6 plates. Einstein papers: pp. 1096: pp. 1105-1115" pp. 1275-1298. Fine and clean. The whole volume offered.‎

‎All three papers first edition. The purpose of ""A theorem in probability and its application in the Theory of radiation"" is to demonstrate that the failure of statistical mechanics with respect to the radiation law (Rayleigh - Jeans law, contradicted by experience) cannot be removed by the conjecture that perhaps the individual statistical events should not follow the usual law of independence (product of probabilities) instead of assuming a certain interdependence between them. (Lanczos). The second paper ""Statistical investigation on of the motion of an oscillator in a radiation field"", makes use of the results of the previous investigation. Einstein's aim is to demonstrate that the Rayleigh-jeans law of radiation (contracdicted by the physical facts) is an unavoidable consequence of statistics, even if we avoid any kind of assumption which may be suspected of needing correction. (Lanczos). The third paper ""Theory of the opalescence of homogenous fluids and fluid mixtures near the critical state"" is an importent investigation and one of the most difficult of all his papers to understand. The aim of the paper is to complement the work of Smoluchovski (Ann. d. Physik,25, 1908) who gave a general explanation of the strong density fluctuations - and the opalescence thus generated - of two fluids near the critical state of mixture (or a single fluid near the critical state of condensation) on the basis of the kinetic theory of heat. he did notgive, however,the quantitative details concerning the scattered light associated with this phenomenon. (Lanczos). - Weil Nos 34, 35 and 36 (with an asterix denoting major work).‎

‎Über Friedrich Kottlers Abhandlung ""Über Ensteins Äquivalenzhypothese und die Gravitation""""‎

‎Leipzig, J.A. Barth, 1916. Orig. printed wrappers. Frontwrapper lacking lower left coener. ""Annalenn der Physik. Vierte Folge. Band 51. 6. Heft."" (=1916 No. 22), pp. 577-684 and 3 plates. Einstein's paper: pp. 639-42. Internally clean and fine.‎

‎First edition. Weil No 81.‎

‎The Collected Papers of Albert Einstein - 7 First Volumes - English Translation by Anna Beck and Peter Havas - Volume 1. The Early Years, 1879-1902 - Volume 2. The Swiss Years : Writings, 1900-1909 - Volume 3. The Swiss Years : Writings, 1909-1911 - Volume 4. The Swiss Years : Writings, 1912-1914 - Volume 5. The Swiss Years : Correspondence, 1902-1914 - Volume 6. The Berlin Years : Writings, 1914-1917 - Volume 7. The Berlin Years : Writings, 1918-1921 - Volume 8. Berlin Years : Correspondence 1914-1918 (3 last volumes Edited by Alfred Engel and Engelbert Schucking) - (Physique, Physics, Relativité, Relativity - Oeuvres complètes)‎

‎Princeton University Press , The Collected Papers of Albert Einstein Malicorne sur Sarthe, 72, Pays de la Loire, France 1998 Book condition, Etat : Bon paperback, editor's printed wrappers, volume 1 is black, 7 other volumes are white In-4 8 vol. - 3408 pages‎

‎ Contents, Chapitres : V.1. (1987), Contents, Publisher's Foreword (March 1987), Preface, Maja Winteler-Einstein, A Biographical Sketch, xxii, Text, 196 pages - V.2. (1989), Contents, Publisher's Foreword (September 1989), Preface, xiv, Text, 399 pages - V.3. (1993), Contents, Publisher's Foreword (August 1993), Preface, xi, Text, 437 pages - V.4. (1996), Contents, Publisher's Foreword (April 1996), Preface, xi, Text, 314 pages - V.5. (1995), Contents, Publisher's Foreword (October 1994), Preface, xxii, Text, 384 pages - V.6. (1997), Contents, Publisher's Foreword (May 1997), Preface, xii, Text, 449 pages - V.7. (2002), Contents, Publisher's Foreword (January 2002), xv, Text, 383 pages - V.8. (1998), Contents, Foreword, Acknowledgments, xxv, Text, 714 pages "8 first volumes of the Collected Papers of Albert Einstein published by Princeton, original paperback first edition, published from 1987 to 1997, homogeneous set but the first volume is black and the 6 following are white, very nice set, wrappers very lightly yellowing, quite nothing, else fine copy, inside is fine, no markings, few foxings on the right side of the volumes but not inside, a very important publications with all the papers from Einstein from 1879 to 1921, the most important period of his carreer with, for instance, the discovery of relativity, 1905 (""On the Electrodynamics of Moving Bodies"", volume 2, page 140) - The complete set should be in 15 volumes (volumes 9 to 15 are missing here) - NB : It may have additional shipping fees, according to the delivery address, the weight of the set is over 6,6 kilos, please contact us, should you need more informations"‎

‎Die Plancksche Theorie der Strahlung und die Theorie der spezifischen Wärme: (Withbound:) Über die Gültigkeitsgrenze des Satzes vom thermodynamischen Gleichgewicht und über die Möglichkeit einer neuen Bestimmung der Elementarquanta" (Wirhbound:) Beric...‎

‎Berlin, J.A. Barth, 1907. Contemp. hcloth. Light wear to top of spine. ""Annalen der Physik. Vierte Folge. Band 22"", Engraved portrait of Pierre Curie. VIII,1016 pp. and 4 plates. Einstein papers. pp. 180-190, pp. 569-572 and p.800. Internally clean and fine. The whole volume offered.‎

‎All papers in first edition. ""From 1905 through 1909 Einstein published five major papers on the hypothesis of energy quanta, its theoretical implications, and its use in the explanation of various phenomena. Among these papers we have his importent paper ""Die Plancksche..."" and in his second paper from 1906d he asserted that Planck's derivation implicitly assumes quantification of the enrgies of charged oscillators. Now (in the paper offered) he returned to this question, showing that, if the structure function in phase space he had introduced earlier is assumed to restrict the oscillators to orbits with energies that are integral mulætiples of 'hv', then the average oscillator energy in a canonical ensemble yealds Planck's law, when substituted in eg. The works contains the first systematic introduction of probability factors in the mathematics of Quantum Theory.The second paper represents Einstein's third stage in dealing with brownian motion. He had previous explained the zigzag motion of suspended particles and looked as this penomenon from a more general angle. In the present investigation he extends his reults to all macroscopic parameters by giving a general principle for the calculation of theit fluctuations. Weil: nos 15 (1-2 with an asterix) a. 16.‎

‎"Correspondance avec Michele Besso 1903-1955 - Collection "" Savoir ""."‎

‎Hermann. 1979. In-8. Broché. Bon état, Couv. convenable, Dos satisfaisant, Intérieur frais. LXIII+327 pages.. . . . Classification Dewey : 830-Littératures des langues germaniques‎

‎"Collection "" Savoir "" - traduction, notes et introduction de Pierre Speziali. Classification Dewey : 830-Littératures des langues germaniques"‎

‎Eine Theorie der Grundlagen der Thermodynamik;‎

‎Leipzig, Johann Ambrosius Barth, 1903. Contemp. hcloth. Some small nicks to spine. (=) Annalen der Physik. Vierte Folge. Band 11. Herausgegeben von Paul Drude."". VIII,1144pp. and 6 plates. The Einstein paper: pp. 170-187. Internally fine and clean.‎

‎First edition of Einsteins fourth paper. In his paper from 1902, Einstein ""says in his introduction that nobody has yet succeeded in deriving the conditions of thermal equilibrium and of the second law of thermodynamics from probability considerations, although Maxwell and Boltzmann came near to it. Willard Gibbs is not mentioned. In fact, Einstein's paper was written in ignorance of Gibbs paper published 1901. In the present paper, Einstein builds the theory on another basis not used by Gibbs, namely on the consideration of a single system in course of time (later called ""Zeit-Gesamtheit"", time assembly), and proves that this is equivalent to a certain virtual assembly of many systems, Gibb's micro-canonical assembly...Einstein at once proceeded to apply his theorems to a case of utmost importance, namely to systems of a size suited for demonstrating the reality of molecules and the correctness of the kinetic theory of matter.""(Walter Alicke). - Weil No. 4.‎

‎Eine Theorie der Grundlagen der Thermodynamik"‎

‎Leipzig, Johann Ambrosius Barth, 1903. Contemp. hcloth. Handwritten paperlabel on spine. In: ""Annalen der Physik. Vierte Folge. Band 11. Herausgegeben von Paul Drude."". VIII,1144pp. and 6 plates. (Entire volume offered). The Einstein paper: pp. 170-187. Faint signs of dampstains in outer margins on a few leaves.‎

‎First edition of Einsteins fourth paper. In his paper from 1902, Einstein ""says in his introduction that nobody has yet succeeded in deriving the conditions of thermal equilibrium and of the second law of thermodynamics from probability considerations, although Maxwell and Boltzmann came near to it. Willard Gibbs is not mentioned. In fact, Einstein's paper was written in ignorance of Gibbs paper published 1901. In the present paper, Einstein builds the theory on another basis not used by Gibbs, namely on the consideration of a single system in course of time (later called ""Zeit-Gesamtheit"", time assembly), and proves that this is equivalent to a certain virtual assembly of many systems, Gibb's micro-canonical assembly...Einstein at once proceeded to apply his theorems to a case of utmost importance, namely to systems of a size suited for demonstrating the reality of molecules and the correctness of the kinetic theory of matter.""(Walter Alicke). First edition of Einsteins fourth paper. In his paper from 1902, Einstein ""says in his introduction that nobody has yet succeeded in deriving the conditions of thermal equilibrium and of the second law of thermodynamics from probability considerations, although Maxwell and Boltzmann came near to it. Willard Gibbs is not mentioned. In fact, Einstein's paper was written in ignorance of Gibbs paper published 1901. In the present paper, Einstein builds the theory on another basis not used by Gibbs, namely on the consideration of a single system in course of time (later called ""Zeit-Gesamtheit"", time assembly), and proves that this is equivalent to a certain virtual assembly of many systems, Gibb's micro-canonical assembly...Einstein at once proceeded to apply his theorems to a case of utmost importance, namely to systems of a size suited for demonstrating the reality of molecules and the correctness of the kinetic theory of matter.""(Walter Alicke). - Weil No. 4 - Boni No 4.‎

‎Ueber die thermodynamische Theorie der Potentialdifferenz zwischen Metallen und vollständig dissociirten Lösungen ihrer Salze und über eine elektrische Methode zur Erforsachung der Molekularkräfte"‎

‎Berlin, J.A. Barth, 1902. Contemp. hcloth. Top of spine with light wear, bottom of spine with small nicks. ""Annalen der Physik. Vierte Folge. Band 8. Hrsg. von Paul Drude."" VIII,928 pp. and 7 plates. Einstein paper: pp. 798-814. Internally fine and clean. The whole volume offered.‎

‎First editon. - Weil No 2.‎

‎Ueber die thermodynamische Theorie der Potentialdifferenz zwischen Metallen und vollständig dissociirten Lösungen ihrer Salze und über eine elektrische Methode zur Erforsachung der Molekularkräfte"‎

‎Berlin, J.A. Barth, 1902. Contemp. hcalf. Gilt spine. Some scratches along edges. Stamp on halftitle and title-page. ""Annalen der Physik. Vierte Folge. Band 8. Hrsg. von Paul Drude."" VIII,928 pp. and 7 plates. Einstein paper: pp. 798-814. Internally fine and clean. The entire volume offered.‎

‎First editon. - Weil No 2.‎

‎L'évolution des idées en physique , des premiers concepts aux théories de la relativité et des quanta‎

‎Payot , Petite Bibliothèque Payot Malicorne sur Sarthe, 72, Pays de la Loire, France 1963 Book condition, Etat : Bon broché In-8 1 vol. - 277 pages‎

‎nombreuses figures Contents, Chapitres : naissance et déclin de la conception mécanique - le champ - la relativité - les quanta format de poche‎

‎L'évolution des idées en physique - Des premiers concepts aux théories de la Relativité et des Quanta - Traduit de l'anglais par Maurice Solovine‎

‎Payot , Petite Bibliothèque Payot Malicorne sur Sarthe, 72, Pays de la Loire, France 1968 Book condition, Etat : Bon broché, sous couverture imprimée éditeur blanche et rouge, illustrée d'un dessin, portrait d'Einstein et de Copernic In-8 1 vol. - 280 pages‎

‎nombreuses figures dans le texte en noir et blanc nouvelle édition en poche, 1968 Contents, Chapitres : Préface des auteurs - La naissance de la conception mécanique - Le déclin de la conception mécanique - Le champ, la relativité - Les Quanta - Leopold Infeld (Cracovie, 20 août 1898 Varsovie, 15 janvier 1968) est un physicien théoricien polonais. - Né à Cracovie où il fait ses études, Leopold Infeld étudia la physique à l'université Jagellonne de Cracovie. Il obtint son doctorat en 1921 sous la direction de Ladislas Natanson. Juif, il quitte la Pologne pour l'Angleterre en 1933 avant de s'installer aux États-Unis en 1936 où il devient collaborateur d'Albert Einstein -avec qui il correspondait depuis 1927- à Princeton. Pour financer la suite de son séjour à Princeton, il écrit en 1938 L'évolution des idées en physique avec Einstein, puis publie conjointement trois articles sur le problème du mouvement en relativité générale (le premier article avec Hoffmann). Nommé professeur à l'université de Toronto en 1938, il revient dans sa terre natale où il est nommé professeur à l'université de Varsovie en 1950. Il y restera jusqu'à sa mort en 1968. Il fut signataire du Manifeste Russell-Einstein en 1955. (source : Wikipedia) - NB : Une histoire de la physique, de la mécanique de Newton jusquaux théories modernes (relativité, quanta), écrite en 1936 par Einstein et lun de ses disciples à Princeton, Léopold Infeld, pour financer le séjour de ce dernier. couverture à peine jaunie, sinon en très bon état, infime trace de pliure au coin supérieur droit du plat supérieur, intérieur frais et propre, papier légèrement jauni, cela reste un bel exemplaire - format de poche‎

‎L'évolution des idées en physique. Des premiers concepts aux théories de la relativité et des quanta. Traduit de l'anglais par Maurice Solovine.‎

‎ 1938 P., Flammarion (Bibliothèque de Philosophie Scientifique), 1938, petit in 8° relié demi percaline vert sapin, VI-298 pages ; cachets. ‎

‎Illustré de 73 figures et 3 planches hors-texte. ...................... Photos sur demande .......................... ‎

‎Correspondance 1903-1955‎

‎Hermann Couverture souple Paris 1979 ‎

‎Très bon In-8. 327 pages. Coll. "Savoir".‎

‎Über die Möglichkeit einer neuen Prüfung des Relativitätsprinzips" (withbound:) Bemerkungen zu der Notiz von Hrn. Paul Ehrenfest: ""Die Translation deformierbarer Elektronen und der Flächensatz"""" (withbound:) Über die vom Relativitätsprinzip gefordert...‎

‎Leipzig, J.A. Barth, 1907. Contep. hcloth. Both hinges with a tear at upper part. ""Annalen der Physik, Vierte Folge. Band 23. Herausgegeben von W.Wien und M. Planck"", VIII,1000 pp. and 4 plates. Einstein's papers pp. 197-98 a. 206-209 a. 371-384. Internally fine and clean. The whole volume offered.‎

‎All 3 papers in first edition. - The first paper ""New possibility of testing the relativity principle"" deals with the shift of canal rays in the Dobbler effect as a possible confirmation of the Principle of Relativity - the confirmation became actual only in 1938 when new improved instrumentation made it possible. - The second paper ""remarks concerning Paul Ehrenfest's note: 'Translation of the deformable electron and the momentum law', Einstein gives his answer by relating it to his Theory of Relativity. - The third paper ""The inertia of energy, as demanded by the principle of relativity"", which is a importen paper as it i is the first to state E=mc2 in its general form. general form. This new relation which was adumbrated already in his paper of 1906 (Das prinzip von der Erhaltung der Schwerpunktsbewegung), brings about the complete unification of mass and energy into a single concept. In natural units, which make c=1, we have E=m, i.e. mass and energy are one and the same quantity. Every form of energy also has a mass value, just as every mass represents a definite amount of energy. - Weil Nos 17,18 a. 19‎

‎Comment je vois le monde - Collection Les livres qui ont changé le monde N°2 - texte integral‎

‎LE MONDE - FLAMMARION - LES LIVRES QUI ONT CHANGE LE MONDE. 2009. In-12. Broché. Bon état, Couv. convenable, Dos satisfaisant, Intérieur frais. 243 PAGES. . . . Classification Dewey : 830-Littératures des langues germaniques‎

‎EINSTEIN ALBERT - FLORENT PETITPAS- SOLOVINE MAURICE (traduction) Classification Dewey : 830-Littératures des langues germaniques‎

‎Albert Einstein in Bern. Eine dokumentarische Skizze über das Ringen um ein neues Weltbild.‎

‎Bern, Paul Haupt, 1961, in-8°, 155 S., reich illustriert, Original-Pappband.‎

‎Privatdruck für die Freunde der Firma Paul Haupt, in 700 nummerierten Exemplaren gedruckt (Nr. 591). ‎

‎Sammlung von 7 postkartengrösse Abbildungen und Sprüche von Albert Einstein + 1 Blatt: ‘Zeittafel unter besoderer Berücksichtigung der Berner Jahre (von 1879 bis 1955) / Verso: Stammbaum von Albert Einstein, / Albert Einstein in Bern‎

‎ o.J., um 1970, kl. in-8vo, 219 S., ill., + 1 dépl. Albert Einstein Museum (2007) zus. im O.-Couvert v. ‘Einstein-Haus’, / Leinengebunden.‎

‎Pourquoi la guerre ?‎

‎ Société des Nations Institut Société des Nations Institut de Coopération Intellectuelle, 1933. Collection correspondance à tirage limité, In-8 broché, couverture à rabats de 63 pages. Exemplaire N° 113 imprimé sur papier de Châtaignier. Très petite déchirure sans manque à la charnière en queue et infimes salissures sans aucune gravité, corps de l'ouvrage en très bel état, absence totale de taches ou rousseurs.. Correspondance entre les deux grands hommes à la demande de l'Institut de Coopération Intellectuelle pour le dialogue au service de la paix. Le titre de la publication fût choisi par S. Freud. Bel exemplaire, rare dans cette condition‎

‎ Toutes les expéditions sont faites en suivi au-dessus de 25 euros. Expédition quotidienne pour les envois simples, suivis, recommandés ou Colissimo. ‎

‎LA RELATIVITÉ D'EINSTEIN. " Exposée simplement avec de nombreuses figures ".‎

‎Bruxelles. J. Meeuwissen, éditeur. 1924. Plaquette grand in-8° agrafée. 82 figures dans le texte. 29 pages. E.O.‎

‎Agrafes rouillées, mais bon état.‎