‎Beiträge zur Kenntniss der Linienspectren I-III + IV (2 papers).‎

‎Leipzig, Barth, 1893-94 Both in orig. printed yellow wrappers. 2 Offprints from Annalen der Physik und Chemie, Neue Folge. Band 50. and Band 52. Separat-Abdrucke. Ueberreicht vom Verfasser. pp. (625-)638 + (119-)131. Clean and fine.‎

‎First printing of these main papers in spectroscopy of the elements, where Rydberg predicts lines of definite wave-lenghts in the spectrum of one or the other element.‎

‎Sur la constitution des spectres linéaires des éléments chimiques.‎

‎(Paris, Gauthier-Villars), 1890. 4to. No wrappers. In: ""Comptes Rendus Hebdomadaires des Séances de L'Academie des Sciences"", Tome 110, No 8. Pp. (369-) 428. (Entire issue offered). Rydberg's paper: pp. 394-97.‎

‎In this paper Rydberg announced his formula, later termed ""Rydberg's Constant - the paper being a shortened version of the larger paper, published at the same time in Kungliga Vetenskaps Akademiens Handlinger with the title ""Recherches sur la constitution des spectres d’émission des éléments chimiques"" - in which he stated as a fundamental principle that ""in the spectra of all the elements analyzed and so far thjere are series of rays whose wavelenghts or wave numbers are functions of consecutive integral numbers"". The equation became an importent inspiration for the development of quantum theory and for the formulation of quantum states by Niels Bohr. Bohr’s view provided an immediate interpretation of the combination principle by identifying each Rydberg spectral term multiplied by hc (Planck’s constant times the speed of light) with the energy of an allowable stationary state of the atom. The difference between two such states equaled the energy in the light quantum emitted in the transition from a higher allowable atomic-energy state to a lower one.""His major spectral work, ""Recherches sur la constitution des spectres d’émission des éléments chimiques"", published in 1890, mapped out Rydberg’s total approach with remarkable clarity. He conceived of the spectrum of an element as composed of the superposition of three different types of series - one in which the lines were comparatively sharp, one in which the lines were more diffuse, and a third that he called principal series even though they consisted mostly of lines in the ultraviolet. The first lines were located in the visible spectrum and were usually the most intense. The members of each series might be single, double, triple, or of higher multiplicity. Any particular elementary spectrum might contain any number (even zero) of series of each of the basic types.""(DSB).‎

‎Untersuchungen über das System der Grundstoffe.‎

‎Lund & Leipzig, Gleerup & Harrassowitz, 1913. 4to. In the original printed wrappers. With author's presentation inscription to top of front wrapper: ""Från vännen forf."" Fine and clean. 41 pp.‎

‎First appearance of Rydberg's important paper in which continued his revision of the periodic system. Here he ascribed two hypothetical new elements which he called nebulium and coronium and came up with the formula 2p*2 (p integer) which Sommerfeld called ""cabbalistic"" in his book ""Atombau und Spektrallinien"".‎

‎Elektron der erste Grundstoff.‎

‎Lund, Håkan Olssons Buckdruckerei, 1906. Lex8vo. Orig. printed wrappers. One of Rydberg's own copies with ""Ueberreicht vom Verfasser"" printed on frontwrapper. 30 pp., 2 large folded tables (the periodic system).‎

‎First edition of important revison of the periodic system in one the author's presentation copies (""Ueberreicht vom verfasser).""Rydberg’s study of the periodic properties of the elements led him in 1897 to suggest that certain characteristics of the elements could be more simply organized by using an atomic number instead of the atomic weights. This atomic number was to be identified with the ordinal index of the element in the periodic table. In 1906 Rydberg stated for the first time (the paper offered) that 2, 8, and 18 (that is, 2n2, where n= 1,2,3) represented the number of elements in the early periods of the system. In 1913 he went further, correcting an earlier error about the number of rare earths from 36 to 32, thus allowing the n = 4 group to be included in the pattern."" (DSB).‎

‎Elektron der erste Grundstoff.‎

‎Lund, Håkan Olssons Buckdruckerei, 1906. Lex8vo. Orig. printed wrappers. Some small nicks to edges of wrappers. 30 pp., 2 large folded tables (the periodic system).‎

‎First edition of Rydberg's important revison of the periodic system. ""Rydberg’s study of the periodic properties of the elements led him in 1897 to suggest that certain characteristics of the elements could be more simply organized by using an atomic number instead of the atomic weights. This atomic number was to be identified with the ordinal index of the element in the periodic table. In 1906 Rydberg stated for the first time (the paper offered) that 2, 8, and 18 (that is, 2n2, where n= 1,2,3) represented the number of elements in the early periods of the system. In 1913 he went further, correcting an earlier error about the number of rare earths from 36 to 32, thus allowing the n = 4 group to be included in the pattern."" (DSB).‎

‎Dynamique des fluides. Un cours de base du deuxième cycle universitaire. 2e édition revue et augmentée.‎

‎ Lausanne, Presses Polytechniques Romandes, 1991, in 8° relié pleine toile rouge de l'éditeur, jaquette illustrée, XXII-450 pages. ‎

‎Complet du tableau dépliant. PHOTOS sur DEMANDE. ...................... Photos sur demande ..........................‎

‎Dynamique des fluides. Un cours de base du deuxième cycle universitaire. Deuxième édition, revue et augmentée.‎

‎ Lausanne, Presses Polytechniques Romandes 1991, 245x165mm, XXII - 450pages, reliure d'éditeur sous jaquette. Nom du possesseur sur le haut de la page de garde supérieure, autrement bel exemplaire. ‎

‎Experiences pour scavoir si le Papier & quelques autres corps sont capables d'arrêter l'Air & l'Eau" & si quand ils arrêtent l'un de ces liquides ils arrêtent l'autre.‎

‎(Paris, L'Imprimerie Royale, 1717). 4to. Without wrappers. Extracted from ""Mémoires de l'Academie des Sciences. Année 1714"". Pp. 55-64.‎

‎First printing.""Réamur was among the greatest naturalists of his or any age. In the breadth and range of his researches, in the patient detail of his observations, and in the brilliant ingenuity of his experiments, it would be difficult to name his equal. Thomas Henry Huxley has compared him favorably with Darwin.""(DSB XI, p. 331).‎

‎Regles pour construire des Thermometres dont les Degres soient comparables, et qui donnent des idées d'un Chaud ou d'un Froid qui puissant être rapportés à desmsures connües.‎

‎Paris, L'Imprimerie Royale, 1732. 4to. Without wrappers. Extracted from ""Mémoires de l'Academie des Sciences. Année 1730"". Pp. 452-507 a. 1 folded engraved plate. With titlepage to Année 1730/1732. Titlepage with small tears to margins. Clean and fine.‎

‎First appearance of this importent paper in which Reaumur reveled how he constructed his invention of the thermometer scale, the scale which bears his name. The construction of the thermometer was based on alchohol, and the scaling bases on 0 degree for the freezing point of water and 80 degree for the boiling point of water.""The one serious drawback to Réaumur’s thermometer was that different strengths of alcohol have different coefficients of dilation, so that while one type of alcohol might expand one degree after the application of a certain amount of heat, another might expand two degrees under the same conditions. It was vital that all thermometers scaled according to his system have the same grade of alcohol. Réaumur suggested that the alcohol used in his thermometers be of a type that would dilate 80 degrees - that is, 8 parts in 100 - between the temperature of ice and the temperature at which the alcohol began to boil in an open thermometer tube. Owing to an unfortunate confusion of language in his article on the thermometer, however, nearly everyone believed that 80° on his scale was the temperature of boiling water"" and as a result, when so-called Reaumer thermometers began to be made by the artisans of Paris, they were nearly all scaled linearly with respect to two fiducial points, 0° for ice and 80° for boiling water."" (DSB).Parkinson ""Breakthroughs"" 1730 P.‎

‎Regles pour construire des Thermometres dont les Degres soient comparables, et qui donnent des idées d'un Chaud ou d'un Froid qui puissant être rapportés à desmsures connües. (+) Second Mémoire sur la Construction... (2 Papers).‎

‎Paris, L'Imprimerie Royale, 1732 a. 1733. 4to. Without wrappers. Extracted from ""Mémoires de l'Academie des Sciences. Année 1730 and 1731"". Pp. 452-507 a. pp. 250-296 and 1 folded engraved plate. With engraved frontispiece and titlepage to Année 1730/1732. Clean and fine.‎

‎First appearance of these importent paper in which Reaumur reveled how he constructed his invention of the thermometer scale, the scale which bears his name. The construction of the thermometer was based on alchohol, and the scaling bases on 0 degree for the freezing point of water and 80 degree for the boiling point of water.Parkinson ""Breakthroughs"" 1730. ‎

‎On a New Kind of Rays. - [THE DISCOVERY OF X-RAYS]‎

‎London, Macmillan and Co., 1895-96. Royal8vo. Bound in contemporary half calf with five raised bands and two black leather title labels with gilt lettering to spine. In ""Nature"", November - April, 1895-96, Vol. LIII [53]. Pp. 274-6. [Entire volume: XL, 624 pp.].‎

‎First printing of the English translation (translated by Arthur Stanton) of Göntgen's seminal paper in which he presented his groundbreaking discovery of X-rays"" the foundation of roentgenology and thereby unveiling a new form of matter and offering a new revolutionary method for medical diagnosis.""Translations of Rontgen's paper soon started to appear, beginning with an English translation in Nature on 23 January. By 20 Febrary Nature was commenting that ""so numerous are the communications being made to scientific societies that it is difficult to keep pace with them, and the limits of our space would be exceeded if we attempted to describe the whole of the contributions to the subject, even at this early stage."" (Bakker, p. 319)""Their [X-rays] importance in surgery, medicine and metallurgy is well known. Incomparable the most important aspect of Röntgen's experiments, however, is his discovery of matter in a new form, which has completely revolutionized the study of chemistry and physics. Laue and the Braggs have used X-rays to show us the atomic structure of crystals. Moseley has reconstructed the periodic table of the elements. Becquerel was directly inspired by Röntgen's results to the investigation that discovered radio-activity. Finally J. J. Thomson enunciated the electron theory as a result of investigating the nature of the X-rays."" (DSB).""On Friday, 8 November 1895, Röntgen first suspected the existence of a new phenomenon when he observed that crystals of barium platinocyanide fluoresced at some distance from a Crookes tube with which he was experimenting. Hertz and Lenard had published on the penetrating powers of cathode rays (electrons), and Röntgen thought that there were unsolved problems worth investigation. He found time to begin his repetition of their experiments in October 1895. Although others had operated Crookes tubes in laboratories for over thirty years, it was Röntgen who found that X rays are emitted by the part of the glass wall of the tube that is opposite the cathode and that receives the beam of cathode rays. He soon discovered the penetrating properties of the rays, and was able to produce photographs of balance-weights in a closed box, the chamber of a shotgun, and a piece of nonhomogeneous metal. The apparent magical nature of the new rays was something of a shock even to Röntgen, and he, naturally, wished to be absolutely sure of the repeatability of the effects before publishing. The first communication on the rays, on 28 December, was to the editors of the Physical and Medical Society of Würzburg, and by 1 January 1896 Röntgen was able to send reprints and, in some cases, photographs to his friends and colleagues. Emil Warburg displayed some of the photographs at a meeting of the Berlin Physical Society on 4 January. The Wiener Presse carried the story of the discovery on 5 January, and on the following day the news broke around the world. The world's response was remarkably swift, both the general public and the scientific community reacting in their characteristic ways. For the former, the apparent magic caught the imagination, and for the latter, Crookes tubes and generators were promptly sold in great numbers.After a royal summons, Röntgen demonstrated the effects of X rays to the Kaiser and the court on 13 January. He was immediately awarded the Prussian Order of the Crown, Second Class.In March 1896, a second paper on X rays was published, and there followed a third in 1897, after which Röntgen returned to the study of the physics of solids. "" (DSB)""Aside from its obvious applications, Roentgen's discovery galvanized the world of physics and led to a rash of further discoveries that so completely overturned the old concepts of the science, that the discovery of X-rays is sometimes considered the first stroke of the Second Scientific Revolution. (The First Scientific Revolution is, of course that which included Galileo and his experiments on falling bodies). Within a matter of months, investigations of X rays led to the discovery of radioactivity by Becquerel....The importence of the discovery was well recognized in its own time. In 1896 Roentgen shared the Rumford Medal with Lenard and in 1901, when Nobel Prizes were set up.the first to be honoured with a Nobel Prize in Physics was Roentgen."" (Asimov).‎

‎Bestimmungen des thermischen linearen Ausdehnungskoeffizienten von Cuprit und Diamant.‎

‎(München, 1912). From ""Sitzungsberichte d. K. Bayer. Akad. d. Wissenschaften.."" pp. 381-387.‎

‎First edition.‎

‎Ueber die Compressibilität von Schwefelkohlenstoff, Benzol, Aethyläther und einigen Alkoholen.‎

‎Leipzig, Barth, 1891. Orig. printed wrappers. Offprint from ""Annalen der Physik und Chemie"" pp. 1-23 and 1 plate.‎

‎First edition in the scarce offprint and with ""Ueberreicht vom Verfasser"" printed on frontcover.‎

‎Ueber die Dicke von cohärenten Oelschichten auf der Oberfläche des Wassers.‎

‎Leipzig, Barth, 1890. Orig. printed wrappers. Offprint from ""Annalen der Physik und Chemie"" pp. 321-329.‎

‎First edition in the scarce offprint with ""Ueberreicht vom Verfasser"" printed on frontwrapper.‎

‎Ueber die durch Electricität bewirkten Form-und Volumenänderungen von dielectrischen Körpern.‎

‎Leipzig, Barth, 1880. Orig. printed wrappers. Offprint from ""Annalen der Physik und Chemie..."" pp. 771-786 and 1 plate.‎

‎First edition in the scarce offprint.‎

‎Ueber die von Herrn Kerr gefundene neue Beziehung zwischen Licht und Elektricität.‎

‎(Giessen, 1880). Offprint from ""Berich der Oberhess. Gesellschaft f. Natur-u. Heilkunde"" pp. 1-16 and 1 lithographed plate. From the library of H. Becquerel with his small paperlabel pasted on front with the booknumber ""B 1919"".‎

‎First edition in the scarce offprint.‎

‎""Nachweis der elektromagnetischen Drehung der Polarisationsebene des Lichtes im Schwefelkohlenstoffdampf"".‎

‎(Leipzig, 1879). From ""Annalen der Physik und Chemie."" pp. 541- 544 and 1 lithographed plate. From the library of H. Becquerel with his small paperlabel pasted on front with the booknumber ""B 1916"".‎

‎First edition.‎

‎""Ueber die elektromagnetische Drehung der Polarisationsebene des Lichtes in den Gasen"".‎

‎(München, 1879). From ""Sitzungsberichte...München"" pp. 147-170 and 2 folded lithographed plates. From the library of H. Becquerel with his small paperlabel pasted on front with the booknumber ""B 1917""‎

‎First edition.‎

‎Über die Anwendung des Eiscalorimeters zur Bestimmung der Intensität der Sonnenstrahlung.‎

‎(Wien, 1874). Lex8vo. Orig. printed wrappers, uncut. Offprint from ""Sitzungsberichte der k. Akad. d. Wissensch."" pp. 1-11 and 1 lithographed plate.‎

‎First edition in the scarce offprint.‎

‎Ueber die Compressibilität des Sylvins, des Steinsalzes und der wässerigen Chlorkaliumlösungen.‎

‎Leipzig, Barth, 1888. Orig. printed wrappers. Offprint from ""Annalen der Physik und Chemie..."" pp. 531-551.‎

‎First edition in the scarce offprint.‎

‎Ueber die Einfluss des Druckes auf die Brechungsexponenten von Wasser, Schwefelkohlenstoff, Benzol, Aethyläther und einigen Alkoholen.‎

‎Leipzig, Barth, (1891). Orig. printed wrappers. Offprint from ""Annalen der Physik und Chemie"" pp. 24-51 and 1 folded plate.‎

‎First edition in the scarce offprint and with ""Von den Verfasser überreicht"" printed on frontwrapper.‎

‎Ueber eine neue Art von Strahlen. (Erste- Zweite Mittheilung) + Weitere Betrachtungen über die Eigenschaften der X-Strahlen. (Dritte Mittheilung). 3 Papers (all).‎

‎Leipzig, Johann Ambrosius Barth, 1898. Contemp. hcloth, A small nick to boards on frontcover. Light wear to spine ends. Gilt lettering to spine. A stamp to verso of title-page. In Annalen der Physik und Chemie, Neue Folge, Band 64. VIII,(2),812 a. 2 plates. Röntgen's papers: 1. pp. 1-11, pp. 12-17 a. pp. 18-37. Internally clean and fine.‎

‎First full exposition of Röntgen's discovery of X-rays, the foundation stones of roentgenology, unveiling a new form of matter and offering a new revolutionary method for medical diagnosis.In order to ensure priority for his discovery, Röntgen first published the two first papers (Erste-Zweite Mittheilung) as offprints from ""Sitzungsberichte der Physikalisch-medicinischen Gesellschaft zu Würtzburg"" in 1895-96, but his discovery only finds its full form in the offered papers, as ""Dritte Mittheilung"" appears here.""Aside from its obvious applications, Roentgen's discovery galvanized the world of physics and led to a rash of further discoveries that so completely overturned the old concepts of the science, that the discovery of X-rays is sometimes considered the first stroke of the Second Scientific Revolution. (The First Scientific Revolution is, of course that which included Galileo and his experiments on falling bodies). Within a matter of months, investigations of X rays led to the discovery of radioactivity by Becquerel....The importence of the discovery was well recognized in its own time. In 1896 Roentgen shared the Rumford Medal with Lenard and in 1901, when Nobel Prizes were set up.the first to be honoured with a Nobel Prize in Physics was Roentgen."" (Asimov).Garrison & Morton No 2683 (only listing 1. paper) - PMM No 380 (listing only 2 parts) - Dibner: 162 (listing only 2 parts).‎

‎Ueber eine neue Art von Strahlen. (Erste- Zweite Mittheilung) + Weitere Betrachtungen über die Eigenschaften der X-Strahlen. (Dritte Mittheilung). 3 Papers (all).‎

‎Leipzig, Johann Ambrosius Barth, 1898. Contemp. hcalf, spine gilt and with gilt lettering. Some scratches to spine and corners bumped and with wear. Some scratching to boards.Stamps to titlepage and one leaf. In: ""Annalen der Physik und Chemie"", Neue Folge, Band 64. VIII,(2),812 a. 2 plates. (Entire volume offered). Röntgen's papers: 1. pp. 1-11, pp. 12-17 a. pp. 18-37. Internally clean.‎

‎First full exposition of Röntgen's discovery of X-rays, the foundation stones of roentgenology, unveiling a new form of matter and offering a new revolutionary method for medical diagnosis.In order to ensure priority for his discovery, Röntgen first published the two first papers (Erste-Zweite Mittheilung) as offprints from ""Sitzungsberichte der Physikalisch-medicinischen Gesellschaft zu Würtzburg"" in 1895-96, but his discovery only finds its full form in the offered papers, as ""Dritte Mittheilung"" appears here.""Aside from its obvious applications, Roentgen's discovery galvanized the world of physics and led to a rash of further discoveries that so completely overturned the old concepts of the science, that the discovery of X-rays is sometimes considered the first stroke of the Second Scientific Revolution. (The First Scientific Revolution is, of course that which included Galileo and his experiments on falling bodies). Within a matter of months, investigations of X rays led to the discovery of radioactivity by Becquerel....The importence of the discovery was well recognized in its own time. In 1896 Roentgen shared the Rumford Medal with Lenard and in 1901, when Nobel Prizes were set up.the first to be honoured with a Nobel Prize in Physics was Roentgen."" (Asimov).Garrison & Morton No 2683 (only listing 1. paper) - PMM No 380 (listing only 2 parts) - Dibner: 162 (listing only 2 parts).‎

‎Neue Versuche über die Absorption von Wärme durch Wasserdampf. 2 Parts. (+ Hertz:) Ueber die Beziehungen zwischen den Maxwellschen electrodynamischen Grundgleichungen und den Grundgleichungen der gegnerischen Electrodynamik.‎

‎Leipzig, Johann Ambrosius Barth, 1884. Contemp.hcalf. Raised bands, gilt spine. Spine very slightly rubbed. Small stamp on htitle, title and verso of titlepage.""Annalen der Physik und Chemie. Hrsg. von G. Wiedemann"". Neue Folge Bd. 23. VIII,696 pp. and 8 folded plates. Röntgen's paper: pp. 1-40 a. 259-298, 2 folded plates. - Hertz's paper: pp. 84-103. Clean and fine.‎

‎First printing of Röntgen's early paper on the heat absorption in vapor. ""Having constructed a very sensitive air thermometer, he was able to measure the absorption of heat in water vapor, and his flair for experiment was also shown by his work on the compressibility of liquids and solids.""(DSB XI, p.530).An. HERTZ'S paper: This is a major paper by Hertz in which he gives simple proofs of Maxwell's fundamental equations. ""In 1884, at Kiel, Hertz had already carried out a study of Maxwell's theory. It was a theoretical response to Helmholtz' general problem of deciding between the electrodynamical theories. Whereas Helmholtz had shown that the experimental decision lay with unclosed currents, Hertz showed that a theoretical decision could be made on the basis of predictions for closed currents. Hertz proved that Maxwell's equations were compatible with the physical assumptions shared by all electrodynamical theories and that the equations of the contending theories were not. He concluded that if the choice lay solely between Maxwell's equations and the equations of the other type of theory, then Maxwell's were clearly preferable."" (DSB VI, pp. 344-45).The volume contains also an importent paper by OTTO RICHARD LUMMER his Inauguraldissertation: ""Über eine neue Inteferenzerscheinung an Planparallelen Glasplatten und eine Methode, die Planparallelität solcher Gläser zu prüfen"". Pp. 40-84 a. 1 plate. and ""Ueber eine neue Inteferenzerscheinung."" pp. 513-548. - Also papers by Kundt, Kohlrausch, Weber and others.‎

‎Adversaria. Udgivet af Det Kgl. Danske Videnskabernes Selskab ved Thyra Eibe og Kirstine Meyer.‎

‎København, Bianco Luno, 1910 Royal8vo. Orig. printed wrappers. Wrappers and sewing loose. (8),271 pp., textdiagrams. Internally fine and clean.‎

‎First edition of Roemers astronomical notes. The notes tells systematically how to correct the errors of reading his famous construction of the meridian instrument when placed in position. Adversaria also records another of his outstanding achievements, being the construction of the thermometer.‎