‎On the Transmutation of Atomic Nuclei by Impact of Material Particles. I. General theoretical Remarks. (all published)‎

‎Copenhagen, Levin & Munksgaard,1937. 8vo. Uncut in orig. printed wrappers. In: ""Det KGL. Danske Videnskabernes Selskab. Mathematisk-fysiske Meddelelser. XIV,10"". 40 pp. Fine and clean.‎

‎First edition of the work in which Bohr introduced his famous Liquid Drop Model of the atom in order to interprete the nuclear structure. (The paper was not continued as Kalckar died the following year).""It had, of course, been clear to Bohr that analogies with atomic spectra could not be of help in interpreting his (earlier) picture of nuclear structure. Peripheral electrons, thinly spread within the atomic volume, can be compared to a dilute gas of particles interacting in pairs only. By contrast Bohr's picture of intranuclear motions of tightly bound nucleons should show 'essential collective aspects', he said. Now, together with Kalckar, he suggested that for nuclei a much more proper comparison would be with a drop of liquid. That analogy should not be taken too literally, the dynamics of a true liquid drop is vastly different from thta of nucleai. Yet the comparison, treated cautiously, was tempting and in the event proved fruitful in many respects, particularly in regard to collective motions.""(Pais ""Niels Bohr's Times"", pp. 339-40).""In the liquid drop model, formulated by Niels Bohr, the nucleons are imagined to interact strongly with each other, like the molecules in a drop of liquid. A given nucleon collides frequently with other nucleons in the nuclear interior, its mean free path as it moves about being substantially less than the nuclear radius. This constant ""jiggling around"" reminds us of the thermal agitation of the molecules in a drop of liquid. The liquid drop model permits us to correlate many facts about nuclear masses and binding energies"" it is useful in explaining nuclear fission. It also provides a useful model for understanding a large class of nuclear reactions."" (FAQ).Rosenfeld No 56.‎

‎Über die Serienspektra der Elemente. (Vortrag gehalten am 27. April 1920 in der Sitzung der Deutschen Physikalischen Gesellschaft in Berlin).‎

‎Braunschweig, Vieweg & Sohn, 1920. Contemp. Hcloth. Stamp on titlepage. In ""Zeitschrift für Physik"", Bd. 2. IV,478 pp. (Entire volume offered). Bohr's paper: pp. 423-469. A very faint dampstain to right margins.‎

‎First edition of this fundamental paper in which Bohr for the first time gives name to a theory, which was for the first time used in his work ""The quantum theory of line Spectra"" from 1918, but now for the first time called ""Korrespondenzprincip"" (The Principle of Correspondence) and explained in the offered paper. The principle was introduced ""in order to obtain the necessary relation to the ordinary theory of radiation in the limit of slow vibrations we are therefore led directlyto certain conclusions about the probability of transition between two stationary states in this limit."".The ""Principle of Correspondence"" is the physical priciple that the behaviour of atomic and other systems should approximate to that predicted by classical physics in certain specific circumstances where quantum effects are expected to be unimportent. Bohr used the principle to explain his theory of the hydrogen atom, which among other things successfully predicted many features of the spectrum of light emitted by energetic hydrogen atoms. The principle formed an importent component of the early quantum theory of Bohr, Sommerfeld and others.Betty Schultz: 17.‎

‎On the Quantum Theory of Radiation and the Structure of the Atom. (+) On the Decrease of velocity of Swiftly Moving Electrified Particles passing through Matter. (2 papers).‎

‎London, Taylor & Francis, 1915. Contemp. hcalf. Spine gilt, title- and tomelabels with gilt lettering. Spine a bit rubbed, some cracking to hinges, but covers not detached. In: ""The London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science"", Vol. XXX, Sixth Series. VIII,824 pp., textillustr. and 18 plates. (Entire volume offered). Bohr's papers: pp. 394-413 and pp. 581-612. A stamp to verso of titlepage. Internally clean and fine.‎

‎First appearance of a landmark paper in which Bohr found experimental support for his energy equation for electron orbits and of stationary states in the work of Franck and Hertz from 1914. Furthermore, Franck and Hertz unwittingly provided an independent confirmation of the concept of stationary state. In 1914 they observed an energy threshold in the electron-stopping power of mercury vapor. This threshold, Bohr explained the following year, corresponded to a transition between the normal state and another (first excited) stationary state of the mercury atom (and not, as Franck and Hertz had originally thought, to the ionization of the atom). The supramechanical stability implied by the assumption of stationary states was now empirically proved to comprehend stability with regard to electron impacts.""Bohr had to frequently revise and refine his atomic model in light of new discoveries. One significant paper ""On the Quantum Theory of Radiation and the Structure of the Atom,"" (the paper offered) added more specific details about atomic states. For example Bohr had earlier made the argument that electrons could jump from one orbit to another as energy was emitted or absorbed. In this paper, he theorezed that an atom possesses stationary states in which energy was neither emitted nor absorbed. Any emission or absorption that did occur, such as might induce an electron ump, would correspond to the transition between two stationary states.""(sparknotes.com).An: the second paper offered. When Bohr had finished his importent paper on the hydrogen atom ""On the Theory of Decrease of Velocity of Moving Electrified Particles on passing through Matter"" 1913, he completed another paper on that subject (the paper offered), which includes the influence of effects due to relativity and to straggling (that is, the fluctuations in energy and in range of individual particles).(Pais p. 128).Rosenfeld no 13 a. 14.The volume contains further importent papers by J.J. THOMSON, W.H. BRAGG, RUTHERFORD & BARNES, SODDY & HITCHINS etc.‎

‎Récits d'une tante - MEMOIRES DE LA COMTESSE DE BOIGNE, née d'Osmond - Publiés d'après le manuscrit original par Charles Nicoullaud (1781 - 1866). ‎

‎Paris PLON-Nourrit et Cie 1907-1908 -in-8 demi-chagrin 4 volumes, reliure demi-chagrin marron (binding half shagreen) in-octavo (22,8 x 14,5 cm), reliure d'époque, dos 5 nerfs (spine with raised bands), décoration "or" et à froid (gilt and blind stamping decoration), Titre et tomaison frappés "or" (gilt title and volume numbering) acec 2 filets "or" de part et d'autre, entre-nerfs à fleuron au fer plein "or "(floweret with full blocking stamp), filet à froid de part et d'autre des nerfs et en tête et en pied, papier marbré vert aux plats (cover with marbled paper), marque-page en tissu vert (bookmark in tissue), toutes tranches lisses (all edges smooth), illustré de 3 portraits en frontispice en héliogravure et un fac-similé d'écriture hors-texte en noir, (XXXV + 505) + 434 + 448 + 547 pages, 1907-1908 Paris PLON-Nourrit et Cie Imprimeurs-Editeurs,‎

‎ Mémoires, 1 "Tulard, 173. ""Seul le tome I intéresse l'Empire. Il est particulièrement riche en anecdotes sur l'opposition royaliste (portraits de Mme Récamier, de Mme de Chevreuse, d'Alexis de Noailles, de Chateaubriand). Quelques détails peu connus sur le mécontentement suscité par les gardes d'honneur et la conscription. Mais on ne perdra pas de vue qu'il s'agit de l'oeuvre d'un adversaire de l'Empire"". Texte également capital pour l'Emigration (Fierro, 169), et, d'une façon générale, pour la Restauration (Bertier, 131)."............trés beaux exemplaires..........en trés bon état (very good condition). en trés bon état ‎

‎Premiers secours avec les plantes sauvages‎

‎ARTEMIS 2017 10 8x18 8x1 2cm. 2017. Broché.‎

‎Très bon état‎

‎Sur une nouvelle machine à calculer.‎

‎(Paris, Gauthier-Villars, 1889). 4to. No wrappers. Disbound. In: ""Comptes Rendus Hebdomadaires des Séances de L'Academie des Sciences"", Tome 109, No 20. Pp. (723-) 758 (entire issue offered). Bollée's paper: pp. 737-739. Disbound but clean.‎

‎First printing of the paper in which Bollée describes his invention of a new calculating machine, later called ""The Millionaire"", based on a multiplying mechanism which was capable of performing multiplication directly instead of using repeated addition. As it allows multiplication by any digit it was used by government agencies ans scientists, especially astronomers, well into the twentieths century.Bollée did not produced his machine comercially, ""... but in 1893 Otto Steiger of Munich patented a calculator based on Bollée's approach, which was manufactured between 1895 and 1935 by the firm Hans W. Egli of Switzerland and marketed under the name of ""Millionaire"".... Forty-six hundred ""Millionaires"" were sold, primarly in Europe."" (Hook & Norman ""Origins of Cyberspace"" : 288). ‎

‎Ad illustrem systematis Naturae Authorem Carolum a Linné equitem auratum Epistola de Novo qvodam Zoophytorum genere. (And) Nacricht von einer neuen Thierpflanze. (2 Parts).‎

‎Hamburg, Heroldischen Buchhandlung, 1770. Large 4to. Orig. blank blue covers. Backstrip nearly gone. 11,12 pp. and 1 large folded handcoloured engraved plate (42x25,5 cm.). The plate strenghtened in folding on verso. A large uncut copy, printed on thick paper. Clean and fine.‎

‎First edition of Bolton's discussion on how to place the newly found Zoophytes in the Linnean system, is it animal or plant, does the genus belongs to zoology or botany ?. In a previous letter to Linné the same year he tells him, that he intends to publish a work on a new zoophyte and ask for permission to dedicate it to Linné as a token of his high esteem.‎

‎Über die Integrale linearer Differentialgleichungen mit periodischen Coëfficienten.‎

‎Wien, Karl Gerold's Sohn, 1868. 8vo. Uncut and unopened in orig. printed wrappers. In: ""Sitzungsberichte der kaiserlichen Akademie der Wissenschaften"", 58. Band, 1. Heft - Juni. Pp. (1-) 155 a. 7 plates.(Entire issue offered). Boltzmann's paper: pp. 54-59. Clean and fine.‎

‎First apperance of an importent paper in which Boltzmann from a mathematical point of view defends atomism. ""Throughout his career, even in his works on subjects other than kinetic theory Boltzmann was concerned with the mathematical problems arising from the atomic nature of matter. Thus, an early paper with the title ""Über die Integrale linearer Differentialgleichungen mit periodischcn Koeffizienten"" (1868) turned out to be an investigation of the validity of Cauchy’s theorem on this subject, which is needed to justify the application of the equations for an elastic continuum to a crystalline solid in which the local properties vary periodically from one atom to the next."" (DSB). The issue contains an importent paper by JOHANN JOSEPH LOSCHMIDT ""Ableitung des Potentiales bewegter elektrischer Massen aus dem Potentiale für die Ruhestand"", pp. 7-14, in which he attempted to derive the Weber-Ampère law from that of Coulomb, and, in accordance with Kirchhoff, to derive Ohm’s law from hydrodynamic flow laws, analogous to Poiseuille’s law.‎

‎Ueber eine von Hrn. Bartoli entdeckte Beziehung der Wärmestrahlung zum zweiten Hauptsatze. (+) Ueber das Arbeitsquantums. welches bei chemischen Verbindungen gewonnen werden kann: (Aus...der Sitzungsberichte de k. Akad. der Wiss. zu Wien).‎

‎Leipzig, Johann Ambrosius Barth, 1884. Without wrappers as issued in ""Annalen der Physik und Chemie. Hrsg. von G. Wiedemann."", Neue Folge Bd. 22, 5. Heft (= No 5). Pp. 1-144 a. 1 folded plate. (entire issue offered). Boltzmann's papers: pp. 31-39 a. pp. 39-72‎

‎First appearance of an importent paper in which Boltzmann followed up his theoretically confirmation of Stefan's experimental findings - the ""Stefan-Boltzmann law"" - by combining the Second Law of Thermodynamics with the theory of the pressure of radiation.‎

‎Ableitung des Stefan'schen Gesetzes, betreffend die Abhängigkeit der Warmestrahlung von der Temperatur aus der electromagnetischen Lichttheorie.‎

‎Leipzig, Johann Ambrosius Barth, 1884. Without wrappers as issued in ""Annalen der Physik und Chemie. Hrsg. von G. Wiedemann."", Neue Folge Bd. 22, 6. Heft (= No 6). Titlepage to vol. 22. Pp. 145-304 (entire issue offered ""Heft"" 6). Boltzmann's paper: pp. 291-294. Small stamp to titlepage and verso of.‎

‎First appearance of this importent paper in which Boltzmann uses the second law of thermodynamics and Maxwell's electromagnetic theory to derive theoretically, based on Stefan's experimental observations, the proportionality of the radiation emitted from a body and the fourth power of the temperature of the body in Kelvin units. ""The law show a possible connection between thermodynamics and electromagnetism that was exploited in the later quantum theory. In the 1920s it was applied by Edington and others in explaining the equilibrium of stellar atmospheres.""(DSB II, p. 266).""The law states that the total energy radiated per unit surface area of a black body per unit time (known variously as the black-body irradiance, energy flux density, radiant flux, or the emissive power), is directly proportional to the fourth power of the black body's thermodynamic temperature T (also called absolute temperature).The Stefan Boltzmann law was experimentally discovered in the year 1879 by Josef Stefan and deduced 1884 by Ludwig Boltzmann theoretically by thermodynamic considerations from the classical electromagnetic theory of the radiation. In the year 1900, thus 21 years after the Stefan Boltzmann law, discovered Max Planck the Planck radiation law designated after it, from which the Stefan Boltzmann law follows simply by integration over all directions and wavelengths. The Planck radiation law could attribute the Stefan Boltzmann constant also for the first time with the introduction of the quantum of action h to fundamental natural constants.""Parkinson ""Breakthroughs"" 1883 P. ‎

‎NOUVELLE METHODE POUR LA RECHERCHE DES FALSIFICATIONS DU THE -‎

‎ BULLETIN ECONOMIQUE DE L'INDOCHINE-HANOI- 1941-INSTITUT DES RECHERCHES AGRONOMIQUES ET FORESTIERES -GOUVERNEMENT GENERAL DE L'INDOCHINE - plaquette gd.IN8 br.,19p. 7 ht - 2 cartes couleur dépliantes - un graphique - envoi autographe auteur à Saurin‎

‎ Remise de 20% pour toutes commandes supérieures à 200 €‎

‎Práctica del guión cinematográfico (Comunicación Band 47)‎

‎Ediciones Paidós Ibérica 1991 162 pages 13 4x1x21 8cm. 1991. Broché. 162 pages.‎

4 Images

‎Bon état bonne tenue intérieur propre‎

‎L'art du bois à Sanaa. Architecture domestique / Avec envoi de Paul Bonnenfant‎

‎Edisud 1987 191 pages in-4. 1987. Broché. 191 pages. Avec de nombreuses figures et illustrations en noir et en couleurs - Complet du système de transcription sous pochette / Avec envoi de Paul Bonnenfant‎

‎Bon état‎

‎Betrachtung über die Natur, mit Anmerkungen und Zusätzen herausgegeben von Johann Daniel Titius. Fünfte Auflage. 2 Bde.‎

‎Wien, B.Ph. Bauer, 1804. 2 contemp. boards. Tome-and titlelabels gilt. Engraved portrait as frontispiece. Portrait shaved in outer margin. XXXVI,438"(1),XVI,534,(24) pp.‎

‎The translator and editor of this work, Johann Daniel Titius, whose commentary and additions to Bonnet's work, takes up nearly as much space Bonnet's text, is known for his formulation of the socalled ""Titius-Bode-Law"" and for using this rule to predict the existence of a celestial object at 2.8 AU from the sun. This Law and observation of his, was published in the above work.‎

‎Dissertation sur le Ver nommé en Latin Tænia, & en francois Solitaire, où après avoir parlé d'un nouveau secret pour l'expulser des intestins dans lesquels il est logé, qui a eu d'heureux succès, l'on donne quelques observations sur cet Insecte. P...‎

‎Paris, L'Imprimerie Royale, 1750. 4to. Extract from ""Mémoires de Mathematique et de Physique, Présentés à l'Academie des Sciences par divers Savans"", Tome I. Pp. 478-529 pp. and 2 engraved plats. With titlepage to Volume I. A small wormhole to inner margin.‎

‎First appearance of this classic study of the tapeworm (Taenia), being the first accurate description of the Proglottids.""In 1741 he began to study reproduction by fusion and the regeneration of lost parts in the freshwater hydra and other animals. The following year he discovered that the respiration of caterpillars and butterflies is performed by pores, to which the name of stigmata has since been given. He also studied tapeworms. These investigations earned him a membership of the Royal Society of London in 1743, the same year he became a doctor of laws.""""Bonnet is considered one of the fathers of modern biology. He is distinguished for both his experimental research and his philosophy, which exerted a profound influence upon the naturalists of the eighteenth and nineteenth centuries. "" (D.S.B. II: 286).With: M. Geer ""Observation sur la propriété singulière qu'ont les grandes Chenilles á quatorze jambes & à double queue, du Saule, de seringuer de la liqueur"". Pp. 530-638 a. 1 engraved plate.‎

‎L'histoire du monde en 500 marches‎

‎ARTHAUD 2017 400 pages 17x22 5x2 8cm. 2017. Broché. 400 pages.‎

‎Très bon état‎

‎La struttura logica del linguaggio (Studi Bompiani)‎

‎Bompiani 2001 537 pages in8. 2001. Broché. 537 pages.‎

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‎Bon étatdos un peu creusé sans rides intérieur propre‎

‎EEN OOG TE VEEL.‎

‎, Antwerpen, Manteau, 1984., Originele uitgeversomslag, 13,5x21,5cm, 40pp.‎

‎Partition de la chanson : Green onions ‎

‎ Intersong 1962‎

‎ Etat moyen Format Coquille ‎

‎The Ancient Egyptian Book of the Dead. Translated by Raymond O. Faulkner. Edited by Carol Andrews.‎

‎(London, British Museum, 1985). 4to. Orig. full cloth with dustjacket. 192 pp. Richly illustrated partly in colour.‎

‎The Book of The Dead or going Forth by Day. Ideas of the Ancient Egyptians concerning the hereafter as expressed in their own Terms. Translated by Thomas George Allen. Prepared for Publication by Elizabeth Blaisdell Hauser.‎

‎Chicago, Univ. of Chicago Press, (1974). 4to. Orig. printed wrappers. X,306 pp.‎

‎(Studies in Ancient Oriental Civilization No. 37).‎

‎The Book of The Dead or going Forth by Day. Ideas of the ancient Egyptians concerning the Hereafter as expressed in their own terms. Translated for publication by Elizabeth Blaisdell Hauser.‎

‎Chicago, University og Chicago Press, (1974). 4to. Nice solid private full cloth. X,306 pp.‎

‎(Studies in Ancient Oriental Civilization No. 37).‎

‎The Egyptian Book of The Dead. The Book of going forth by Day. Being the Papyrus Ani (Royal Scribe of the divine Offerings)...Translated by Raymond O. Faulkner. With additional Translations and a Commentary by Ogden Goelet, Jr.‎

‎San Francisco, Chronicle Books, (1994). Folio. Orig. boards with dustjacket. 176 pp., 37 colourplates and illustr. in black/white.‎

‎FROM JANUARY TO DECEMBER‎

‎REVIEW OF REVIEWS OFFICE. Non daté. In-12. Broché. Etat d'usage, Couv. légèrement passée, Dos satisfaisant, Intérieur acceptable. 58 pages. Nombreuses illustrations en noir et blanc dans et hors texte.. . . . Classification Dewey : 420-Langue anglaise. Anglo-saxon‎

‎ Classification Dewey : 420-Langue anglaise. Anglo-saxon‎

‎TONEEL EN THEATERLEVEN TE BRUSSEL NA 1830,‎

‎, Archief en Museum van het Vlaams Leven te Brussel, 1993, Gebrocheerd onder geillustreerde kartonomslag, 150 x 240mm., 256pp., z/w illustratie.‎

‎Zo volledig mogelijke inventaris van verdwenen en nog bestaande toneelgezelschappen te Brussel. Boek is in zeer goede staat.‎