35 books for « helmholtz hermann »Edit

‎Physiologische Wärmeerscheinungen. Bericht über ""Der Inhalt der Schrift ""Ueber die Erhaltung der Kraft"""".‎

‎Berlin, G. Reimer, 1850. Contemp. hcalf, profusely gilt spine. XXXII,622 pp. In: ""Fortschritte der Physik im Jahre 1847. Dargestellt von der physikalischen Gesellschaft zu Berlin"". III. Jahrgang. Redigirt von G. Karsten. XLIV,703 pp. Stamp on titlepage. Helmholtz's paper: pp. 232-245. Clean and fine.‎

‎First printing of Helmholtz's own report on the meeting of the 23rd of July 1847 in the Physical Society of Berlin. In the meeting he presented with great success his groundbreaking paper ""Ueber die Erhaltung der Kraft"". In the paper printed in the ""Fortschritte"", Helmholtz summarizes the main mathematical and historical features of his Conservation of Energy-principle as it was laid down in ""Ueber die Erhaltung der Kraft"".""On July 21 he (Helmholtz) announced to du Bois-Reymond that he would bring forward his 'Conservation of Energy' on the 23rd at the Physical Society. The meeting was one of the most memorable in the annals of the Society"" as du Bois tells us, Helmholtz revealed himself at one bound, to the surprise of all his friends, as a master of mathematical physics. The members of the Physical Society were acquainted with the Law of the Conservation of Energy when it was still unknown to all the rest of the world.""(Leo Koenigsberger in ""Hermann von Helmholtz"", pp. 38).In his groundbreking work Helmholtz announced the first comprehensive statement of the first law of thermodynamics: All modes of energy, heat, light, electricity, and all chemical phenomena, are capable of transformation from one to the other but are indestructible and cannot be created. Helmholtz offered his paper to Poggendorf's 'Annalen', but the editor declined to publish so dangerous a speculation. Helmholtz had it printed at his own expense in a small number in 1847.‎

‎Ueber einige Stellen der Schrift von Helmholtz ""über die Erhaltung der Kraft""" (and Helmholtz:) Erwiederung auf die Bemerkungen von Hrn. Clausius" (and Clausius:) Ueber einige Stellen der Schrift von Helmholtz ""über die Erhaltung der Kraft"", zweite No...‎

‎Leipzig, Johann Ambrosius Barth, 1853-54. No wrappers. ""Annalen der Physik und Chemie. Hrsg. von J.C. Poggendorff"", Vol. 89, No 8 and vol. 91 No 2 a. 4. Pp. 497-628, pp. 161-320 a. pp. 497-628 a. 1 folded plate. (3 entire issues offered). Clausius's papers pp. 568-579 (vol. 89, ""Heft"" 8) a. pp. 601-604 (vol. 91,""Heft"" 4). Helmholtz paper: pp. 241-260 (vol. 91, ""Heft"" 4). With titlepages to both volumes 89 a. 91. All three issues clean and fine.‎

‎First printing of the 3 main papers in the famous Helmholtz-Clausius controversy about the principle of the ""Conservation of Energy"". His reply to Clausius contains very importent additons to his conservation law, as it clarifies his use of the concepts of ""energy"", ""vis viva"", ""electrical tension"" , ""potentials"" etc.Helmholtz famous work Über die Erhaltung der Kraft"" from 1847 gave the first comprehensive statement of the first law of thermodynamics: All modes of energy, heat, light, electricity, and all chemical phenomena, are capable of transformation from one to the other but are indestructible and cannot be created. Clausius (in the papers offere) critized helmholtz on his theory of heat over the consistency of the physical interpretation and of the use mathematics. He argued that Helmholtz's demonstration of his conservation law was valid only for Helmholtz's particulat model of matter, and that he had not understood the notion of the potential. This criticism lead Helmholtz expand and clarify the central concepts of physics, importent steps in the history of theoretical physics.‎

‎Ueber galvanische Ströme, verursacht durch Concentrationsunterschiede"" Folgerungen aus der mechanischen Wärmetheorie. (On galvanic Currents caused by Differences in Concentration: Deductions from the Mechanical Theory of Heat).‎

‎Leipzig, Johann Ambrosius Barth, 1878. Without wrappers as issued in ""Annalen der Physik und Chemie. Hrsg. von G. Wiedemann."", Neue Folge Bd. 3, 2. Heft. Pp. 161-320 a. 1 folded plate. (entire issue offered). Helmholtz' paper: pp. 201-216. With titlepage to volume 3.‎

‎First apperance - in full - of this importent paper in which for the first time the 2 laws of thermodynamics were applied to electrical phenomena. Parts of the paper were published already in 1877.""In 1877 Helmholtz attempted to predict theoretically the electromotive force of a galvanic cell for different concentrations of a salt solution. Under certain conditions the cell can be treated as a reversible cycle and the laws of Carnot and Clapeyron applied to it. The theory was in substantial agreement with experimental data by James Moser.""(DSB). - The Moser-paper confirming Helmholtz theory is printed here on pp. 216-219, taken from Monatsberichte der Berl. Akad., 1877.""In his work 'On Galvanic Currents', Helmholtz was the first to apply the two laws of thermodynamics to electricity. In order to keep up a current of electricity through any conductor it is necessary to expend a certain amount of chemical or mechanical work"" the supply of positive electricity in the positive end of the conductor must be perpetually renewed, in order to oppose the repulsive force of the positive electricity there accumulated, and the same holds for the negative electricity at the negative end.""(Koenigsberger ""Hermann von helmholtz"", pp. 309-12).‎

‎Studien über electrische Grenzschichten. (Studies in Electrical Contact-layers).‎

‎Leipzig, Johann Ambrosius Barth, 1879. Without wrappers as issued in ""Annalen der Physik und Chemie. Hrsg. von G. Wiedemann."", Neue Folge Bd. 7, No. 7. Pp. 337-496 a. 1 plate. (Entire issue offered). Helmholtz paper: pp. 337-382.‎

‎First appearance of a famous paper in electrodynamics in which Helmholtz was able to explain the production of electricity by friction and succeeding ""in deriving the relations of the series of electrical tensions due to friction, and the theory of the electrical machine, satisfactorily from it.....In this paper....Helmholtz comes back repeatedly to the close connection between electrical and the chemical forces, as well as to the explanation of Volta's fundamental experiment......These researches of Hertz, the results of which were plainly foreseen by helmholtz, gave substantial support to the Faraday-Maxwell hypothesis of the nature of electricity, and confirmed Helmholtz in his opinion of the accuracty of Faraday's conceptions.""(Koenigsberger ""Hermann von helmholts"", pp. 317-321).‎

‎Note sur la vitesse de propagation de l'agent nerveux dans la nerfs rachidiens" (Transmise par M. de Humboldt). (Séance du Lundi 25 Fevrier 1850). (+) Deuxieme Note sur la vitesse de l'agent nerveux. (2 Papers).‎

‎Paris, Bachelier, 1850 a. 1851. 4to. No wrappers. In: ""Comptes Rendus Hebdomadaires des Séances de L'Academie des Sciences"", Tome 30, No 8 and Tome 33, No 9. Pp. (185-) 215 a. pp. (253-) 276. Helmholtz's papers: pp. 204-206 a. pp. 262-265. Clean and fine.‎

‎First appearance (also in Berichte königl. Preuss. Ak. the same year) of these short notes in which Helmholtz announced his discovery and measurements of the time delay of nervous impulses, a discovery ""which opened a new and unbounded field of investigations to physiologists"". It is one the most importent discoveries in physiology in the 19th century.""Du Bois-Reymond... received Helmholtz's first two-page note. Müller, to whom Du Bois tried to ecplain it, insisted on rejecting the conclusion, arguing that Helmholtz had not eliminated the time for the contraction of the muscle. Humboldt, du Bois wrote Helmholtz, ""war ganz depaysiert"", and at first refused to send the paper to Paris for publication there. Du Bois had first to edit it and then Humboldt, won over, had it published in the ""Comptes Rendus"", adding a further explanatory foot-note of his own. By summer, Müller had also been won, and then helmholtz published his longer paper in which he included a measurement of tghe time of the muscular cobntraction and nes determinations of the rate of transmission.""(Boring ""History of Experimental Psychology"", p. 48).""To separate the movement in time from the event of will that caused it was in a sense to separate the body from the mind, and almost from the personality or self. At any rate, helmholtz's discovery was a step in the analysis of bodily motionthat changed it from an instantaneous occurrence to a temporal series of events, and it thus contributed to the materialistic view of the psychophysical organuismthat was the essence of nineteenthy century science.... The most impiortent effect of the experiment and all the research that followed upon it was, however, thatit brought the soul to time, as it were, measured what had been ineffable, actually captured the essential agent of mind in the toils of natural science."" (Boring ""History of Experimental Psychology"", p. 42).""Helmholtz’ research in sensory physiology began in 1850, when he determined the velocity of the nerve impulse in the sciatic nerve of the frog. In 1852 he obtained more precise results through his invention of the myograph. This device, in which the muscle traces the motion of its contraction upon a rotating drum, permitted more exact measurement of the small time intervals involved than any previous method. Helmholtz’ measurements yielded not only a finite velocity for nerve propagation but also the surprisingly slow one of about ninety feet per second. The result was considered a victory for the mechanistic school, for it seemed to confirm du Bois-Reymond’s hypothesis that the nerve impulse consisted in the progressive rearrangement of ponderable molecules.""(DSB).‎

‎Handbuch der Physiologischen Optik. Bearbeitet. Mit 213 in den text eingedruckten Holzschnitten und 11 Tafeln.‎

‎Leipzig, Leopold Voss, 1867. Lex8vo. Contemporary hcloth. Some cracks along hinges neathly repaired. A stamp on titlepage and last page. XIV,874,(1) pp., 213 textillustr. in woodcut and 11 folded plates. Plate 1 with a faint dampstain, otherwise clean and fine. The copy also having the series-title: ""Allgemeine Encyclopädie der Physik...Hrsg. von Gustav Karsten. IX. Band. Handbuch der Physiologischen Optik.""‎

‎First edition of a main work by the ""Patriarch of German Science"". It is ""Considered the most importent book on the physiology and physics on vision."" (Horblit, 100 Books famous in Science). It incorporates Helmholtz's studies on physiological Optics, starting in the year 1851, the year in which he published his invention of the ophthalmoscope. - ""When Helholtz abandoned physiology for physics in 1871, the former science, he complained, had already grown too complex for any individual to embrace in its entirety. At his death in 1894, that complexity had become true of virtually all fields, Helmholtz was the last scholar whose work, in the tradition of Leibniz, embraced all the sciences, as well as philosophy and the fine arts."" (R. Steven Turner in DSB). -""One of the greatest book on physiological optics"" (Garrison & M., 1513). Helmholtz' contributions to science covers a wide range. ""His work in physiological optics, which he embodies in a great, is of fundamental value"" (Magie: A Source Book in Mathematics). In the authors introduction to the work,dated 1866, he states that it originally appeared in three parts, the first in 1856, the second in 1860 and the third in 1816, and incorporates his researches in his investigations on colours, the physiology of vision and the dioptrics of the eye. The first part contains besides the papers on physiological optics, that were published the years before, an admirable review of all previous work comprised under this heading, the book contains a store of new and most importent results, which provided a firm mathematical basis for the whole structure of physiological optics....In the first part he is principally concerned with the problem of of the refraction of the light-rays, or the dioptrics of the eye. Part II deals with the theory of visual sensation and treats in the first place of the various forms of stimulation of the optic nerve, and then of its excitation by light in particular, after which Helmholtz gives a connected development of the theories previously published by himself and others on simple and compound colours. Part III deals with the connections between the sensations and the external objects, that is with the the representations of objects by the perceptions caused by them, in other words, what kind of truth are we to describe to our ideas and perceptions ? (Based on Leo Koenigsberger: Hermann von Helmholtz).- Horblit No 49b - Garrison & M. No 1513. - ‎

‎Ueber die Dauer und den Verlauf der durch Stromesschwankungen inducirten elektrischen Ströme. (On the Duration and Course of the Electrical Currents induced by Variation of an Inducing Current).‎

‎Leipzig, Johann Ambrosius Barth, 1851. Without wrappers as issued in ""Annalen der Physik und Chemie. Hrsg.von Poggendorff"", Bd. 83, Viertes Stück.(= Heft No. 8 of 1851). (The entire issue offered (Heft 2 of vol. 83 with titlepage to vol. 83). Pp.469-600 a. 2 engraved plates. Helmholtz's paper: pp. 505-540. Clean and fine.‎

‎First appearance of this paper in which Helmholtz for the first time measures and gives the mathematical formula for the duration of induced electrical currents and thus distinguished with mathematical accuracy from those due to nerve-action.""In (the offered paper) he begins by stating a mathematical law, which he had verified by a long and difficult series of experiments. By means of this law F. neumann was enabled to solve the problem he had previously laid aside, as to the distribution of current in a copper disk rotating below the two poles of a magnet......After Helmholtz had extended this exponiential law mathematically to divided circuits, he tested it experimentally by means of a new type of galvanic contact-key, which madeit possible to vary the interval between the opening and closing of any current, as required.""(Koenigsberger ""Hermann von helmholtz"", pp. 79-80).‎

‎Physiologische Wärmeerscheinungen. Bericht ""über die Theorie der physiologischen Wärmeerscheinungen für 1845"" (Report on the Work done on the Theory of Animal Heat in 1845).‎

‎Berlin, G. Reimer, 1847. Contemp. hcalf, profusely gilt spine. Light wear along edges. XXXII,622 pp. In: ""Fortschritte der Physik im Jahre 1845. Dargestellt von der physikalischen Gesellschaft zu Berlin"". I. Jahrgang. Redigirt von G. Karsten. XXXII,622 pp. A stamp on titlepage. Helmholtz's paper: pp. 346-355. Clean and fine.‎

‎First appearance of this milestone paper which represents the first, and most importent, step towards his great work laid down in ""Über die Erhaltung der Kraft"", 1847. This is Helmholtz' FIRST PAPER ON THE CONSERVATION OF FORCE""At the beginning of October, 1846, Helnmholtz sent a 'Report on Work done on the Theory of Animal Heat for 1845', at du Bois' request, to the ""Fortschritte der Physik"", issued by the Physical Society. (the paper offered). This was merely an abstract from the article in the Encyclopaedic Dictionary.....BUT IT ANTICIPATES MORE DEFINITELY THE CONDCLUSIONS OF HIS GREAT WORK. He states without hesitation that the material theory of heat is no longer tenable, and that a kinetic theory must be substituted for it, since heat originates in mechanical forces, either directly by friction, or indirectly from an electrical current produced by themotion of magnets. This conception of heat as a motion involves the conclusion that mechanical, electrical and chemical forces must always be the definite equivalent of one and the same energy, whatever the mode by which one force is transformed into another. The empirical confirmation of this law must be the imperative duty of physicists and physiologists.""(Leo Koenigsberger in ""Hermann von Helmholtz"", pp. 34-35).""In the ""Fortschritte der Physik"" for 1845, which appeared in 1847, Helmholtz published a report on theories of physiological heat which he later acknowledged as belonging to his work on the conversation of force.""(Jungnickel & McCormach ""Intellectual Masteryof Nature, Vol. 1, p. 157).‎

‎Ueber Hrn. Brewster's neue Analyse des Sonnenlichts.‎

‎Leipzig, Johann Ambrosius Barth, 1852. Without wrappers as issued in ""Annalen der Physik und Chemie. Hrsg.von Poggendorff"", Dritte Reihe Bd. 26, Achtes Stück.(= Heft No. 8 of 1852). (The entire issue (No. 8) offered). Titlepage to vol. 26. Pp. 501-600. Helmholtz's paper: pp. 501-523. Clean and fine.‎

‎First appearance of this founding paper in the modern theory of colour, in which Helmholtz proved the surprising fact that there are only two among the colours of the spectrum, yellow and indigo-blue, which together yields pure white, that is, are complementary to each other, whereas their combination had always been supposed to produce green.""Helmholtz turned to the intricate problems of color vision in 1852 with an attack on Sir David Brewster's new theory of light. Brewster had maintained the objective reality of three primary colors by supposing, in opposition to Newton, that there exist three distinct kinds of light, each of which excites in the eye one of the sensations red, yellow, or blue. Helmholtz regarded the theory as still another confusion of physical stimulus and subjective responce....He also revived Young's theory of color visoin...only to refute it. He had discovered that spectral colors, when mixed, always yield a duller color of less-than-spectral saturation. Therefore the whole idea that all colors may be obtained from mixtures of three primary colors must be incorrect, he concluded, for the spectral colorss, at least, can never be obtained in their full saturation by mixing any three of their number....Although Helmholtz dismissed Young's theory in 1852, by 1858 he had changed his mind and become its formost advocate. In order to save Ypoung's theory....Helmholtz asumed that Young's physiological primaries are not spectral colors att all, but colors of far greater-than-spectral saturation...""(DSB VI, pp. 246-247). Garrison & Morton 1508.‎

‎Theorie der Luftschwingungen in Röhren mit offenen Enden.‎

‎Berlin, Georg Reimer, 1860. 4to. Hcalf, but spine gone and covers loose. In: ""Journal für die reine und angewandte Mathematik Crelle/Borchardt"", 57. Band. IV,375,(1) pp. (Entire volume offered). Helmholtz' paper: pp. (1-) 72. A small brownspot to page one.‎

‎First printing of Helmholtz' groundbreaking work on the aerial vibrations in tubes. Together with his work on Vortex Motion (Ueber Integrale der hydrodynamischen Gleichungen, welche den Wirbelbewegungen entsprechen) from 1858 it ""must be reckoned among the most brilliant of Helmholtz's mathematical achievements, only rivalled, and perhaps surpassed, by the work of the last ten years of his life.""(Leo Koenigsberger, p. 180 ff).The paper was reprinted in Ostwald's Klassiker Nr. 80.The volume contains further importent papers by Clebsch, C. neumann, Borchardt, Cayley, Hesse, Hermite, Kronecker, Kummer etc.‎

‎Mémoire sur la conservation de la force. Précédé d'un exposé élémentaire de la transformation des forces naturelles. Traduit de l'allemand par Louis Pérard‎

‎Paris, Victor Masson, 1869, in-8, III-137 pages, Broché, couvertures d'origine, Première édition française de cet important traité. Par "force", Helmholtz, qui titrait ce traité originellement publié en allemand en 1847 "Über die Erhaltung der Kraft", entend "énergie". Jeune physiologiste alors peu connu, Hermann von Helmholtz (1821-1894) fait émerger ici le principe de conservation de l'énergie, à la fois sur des bases philosophiques et physiques, et il met en évidence deux principes nouveaux : la force vive et la force de tension, ébauches de l'énergie cinétique et de l'énergie potentielle. "It drew heavily on the works of Sadi Carnot, Clapeyron, Holzmann, and Joule, although it was far more comprehensive than those previous treatise". Helmholz exerça une influence considérable sur la pensée scientifique du XIXe siècle, non seulement pour le succès de ses travaux, menés dans les domaines les plus variés (énergie, optique, épistémologie, électrodynamique...), mais aussi pour ses qualités de professeur et de pédagogue, qui tenta de rendre ses connaissances accessibles au plus grand nombre avec ses "conférences populaires" ("Populare wissenschaftlische Voträge"). Norman I, 1039 ; DSB VI, pp. 241 et suiv. ; Dibner, Herald & Science n° 159 (pour l édition originale allemande). Exemplaire non rogné. Couverture rigide‎

‎Bon III-137 pages‎

‎Helmholtz G. The rate at which nerve arousal spreads./Gelmgolts G. Skorost raspr‎

‎Helmholtz G. The rate at which nerve arousal spreads./Gelmgolts G. Skorost rasprostraneniya nervnogo vozbuzhdeniya.. E6‎

‎Helmholtz G. On the preservation of force (physical examination)./Gelmgolts G. O‎

‎Helmholtz G. On the preservation of force (physical examination)./Gelmgolts G. O sokhranenii sily (fizicheskoe issledovanie).. E6‎

‎Über die auf das Innere magnetisch oder elektrisch polarisirter Körper wirkende Kräfte.‎

‎Berlin, Akademie der Wissenschaften, 1881. Uncut in orig. printed wrappers. In: ""Monatsbericht der Königlichen Preussischen Akademie der Wissenschaften zu Berlin."" Februar issue 1881. Pp. 117-274 a. 2 plates. (Entire issue offered). Helmholtz's paper: pp. 191-213.‎

‎First appearance of this importent paper on the electromagnetic theory, proposing a complete theory of the phenomenon that insulators tend to alter their shape under the influence of dielectric forces.... ""Helmholtz finally concludes from the expression for the forces, that the two views - that, namely, which postulates forces acting at a distance, and that of Farady-Maxwell, according to which there is only polarization of the media - may thus exist side by side."" (Koenigsberger, pp. 329-30).The issue contains Rudolf Virchow's paper ""Über die ethnologische Bedeutung des Os malare bipartitum"", pp. 230-267 and 1 folded lithographed plate.‎

‎Ueber Integrale der hydrodynamischen Gleichungen, welche den Wirbelbewegungen entsprechen,‎

‎Berlin, Georg Reimer, 1858. 4to. Extracted from ""Journal für die reine und angewandte Mathematik Crelle/Borchardt"", 55. Band, 1. Heft.: 3. Pp. 25-55 and with titlepage to volume 55. A bit of browning to outer corners of titlepage.‎

‎Firsi printing of Helmholtz' seminal paper on the hydrodynamics of vortex motion, which is the first detailled analysis of fluid motion not constrained to being irrotational - being his most importent contribution to mathematical physics. The paper was the direct inspiration for J.J. Thomson's ""vortex atom"" (See Pais ""Inward Bound"", pp. 176 ff).""In 1857, in a work of genius that proved him to be a mathematician of first rank 'On the Integrals of the Hydrodynamic Equations which express Vortex-motion' (the paper offered), he gave the solution of some extremely difficult hydrodynamical problems. He rejected the earlier hypotheses, and followed up the analogies between the motion of fluids and the electromagnetic action of electrical currents, which were of such much importence for his subsequent work on the Theory of Electricity and Magnetism.""Leo Koenigsberger, p. 167 ff.)""In 1858 Helmholtz published his seminal memoir ""Ueber Integrale der hydrodynamischen Gleichungen, welche den Wirbelbewegungen entsprechen,"" important for both its physical results and its mathematical methods. His motivations for taking up this new research interest remain unclear. One motive seems, however, to have been his interest in frictional phenomena, carried over from his interest in energetics"" another was his growing awareness of the power of Green’s theorem.""(DSB).Parkinson ""Breakthroughs"", 1858 P.‎

‎Hermann von Helmholtz.‎

‎3 Bände. Braunschweig, Friedrich Vieweg und Sohn, 1902-1903. Gross-8°. XII, 375 S.; XIV, 383 S.; X, 142 S., 3 S. Faksimile. Mit 9 Heliogravuren und einem Brieffaksimile. Halbleinwandbände der Zeit mit goldgeprägtem Rückentitel.‎

‎Originalausgabe. - L. Königsberger (1837-1921) war Mathematiker an der Universität Heidelberg. - Papier leicht gebräunt sonst sauberes Exemplar.‎

‎Über die physikalischen Beziehungen zwischen hydrodynamischen und elektrodynamischen Erscheinungen, und die Widerlegung des elementaren Potentialgesetzes von Helmholtz durch elektrodynamische Versuche mit geschlossenen Strömen.‎

‎Leipzig, 1876, in-8vo, 3 Bl. + S. (59)-239 + 3 lith. (1 gef.) Figurentafeln (Apparate und Versuche), Original-Broschüre, Bibl.-Stempel auf Umschlag.‎

‎Separat-Abdruck aus den Berichten der Königl. Sächs. Gesellschaft der Wissenschaften zu Leipzig. Sitzung am 12. Febr. 1876.Zöllner war Prof. der Physikal. Astronomie in Leipzig und einer der Pioniere der Astrophysik. DSB XIV/627-630; Poggendorff III/1488-1489, IV/1694. ‎

‎Die theoretische Grenze für die Leistungsfähigkeit der Mikroskope. (The Theoretical Limit of the Efficiency of Microscopes).‎

‎Leipzig, J.A. Barth, 1874. Without wrappers. In ""Annalen der Physik und Chemie. Hrsg. von J.C. Poggendorff"", Jubelband. With titlepage to ""Jubelband"". Titlepage with a stamp. Pp. 557-584‎

‎First appearance of a fundamental paper in modern optics in which Helmholtz published his discovery of the resolution limit of the microscope. He found that the limit for the difference of magnitude that we are able to distinguish plainly is in general found equal to half the wave-lenght of theparticular light employed. A further increase in optical power beyond that of the best modern instruments does not therefore seem possible.‎

‎Théorie physiologique de la musique, fondée sur l'étude des sensations auditives. Traduit de l'allemand par M. G. Guéroult (...), avec le concours, pour la partie musicale, de M. Wolff (...). Avec figures dans le texte ‎

‎Paris Victor Masson 1868 in-8 demi-chagrin cerise modeste, dos à nerfs orné de filets et doubles caissons dorés, tranches mouchetées [Rel. de l'époque], dos sali ‎

‎3 ff. n. ch., 544 pp., figures dans le texte. Sans le Supplément que l'on trouve parfois joint en fin de volume.Garrisson-Morton, 1562. Edition originale de la traduction française. A la fois médecin et physicien, Hermann von Helmholtz (1821-1894) s'intéressa particulièrement à la physiologie permettant la perception et le classement des sons, élaborant une théorie depuis lors dépassée, mais qui eut le mérite de poser les éléments scientifiques de la question ‎

‎LES GLACIERS ET LES TRANSFORMATIONS DE L’EAU, suivis d’une conférence sur le même sujet par M. HELMHOLTZ, avec la réponse de M. TYNDALL. Ouvrage illustré de nombreuses figures dans le texte et de huit planches tirées à part sur papier teinté (3 ème édition)‎

‎Librairie Germer-Baillière et Cie (Collection Bibliothèque scientifique internationale), Paris, 1880‎

‎Un volume petit in-8° (14 x 22 cm), relié plein chagrin rouge avec un fer doré au centre du premier plat (Académie de Paris, Prix du Concours Général), dos à 5 nerfs, avec 6 caissons dont l’un contient les mentions d’usage (Auteur et Titre) en lettres dorées. Les 3 tranches sont également dorées. L’ouvrage s’ouvre sur un frontispice (Panache de nuages de l’Aiguille du Dru). Il se poursuit par deux préfaces (l’une à la première edition, l’autre à la seconde, toutes les deux signées TYNDALL (1820-1893). Dans l’une de ces préfaces, l’Auteur décrit avec tristesse et inquiétude, déjà, la fonte rapide des glaciers d’une visite à l’autre qui “finira par réduire les glaciers de la Suisse à n’être plus que l’ombre de ce qu’ils étaient autrefois”... L’ouvrage, qui compte 264 pages avec sa table des matières contient, en plus des 8 gravures hors-texte, de nombreuses illustrations en noir in-texte. Il s’agit d’un ouvrage fort sérieux mais d’une lecture extrêmement intéressante, basé sur des observations directeq s qui ne manqueront pas aujourd’hui encore d’intéresser les alpininistes. BEL EXEMPLAIRE.‎

‎La Voix, l'Oreille et la Musique.‎

‎Paris, Germer Baillire, 1867. XII, 163, [III] PP. 12M0 (12 X 18 CM.). Original half red morocco, spine with 4 raised bands, in compartments gilt decorated and lettered, on the front side the gilt supra-libros "Ville de Paris - Collge Municipal Chaptal" (prize binding).‎

‎First edition of this French vulgarization of Helmholtz' classic works (1863 & 1868) on physiological acoustics & the ear. See Garrison & Morton 1562 (for the original edition). Despite scattered foxing, a nice copy in an attractive, and solid, contemporary binding.‎

‎Optique Physiologique.‎

‎Editions Jacques Gabay. Réimpression de 1989 de l'édition de 1867. 2 Volumes In-8. Br. Tome I : 559 p. Tome II : 1057 p. + 11 planches dépliantes. Pagination continue. TBE. ‎

‎Théorie physiologique de la musique, fondée sur l'étude des sensations auditives.‎

‎Paris, Masson , 1874.‎

‎ Toutes les théories modernes de la résonance sont basées sur les travaux d'Helmhotz. En fin de volume des suppléments relatifs à des questions de physique et de mathématique ont été ajoutés. Illustré par 57 figures dans le texte. Appendice manuscrit en fin de volume. Traduit de l'allemand par M. Guéroult. Garrison-Morton 1562. "One of the greatest books on the subject." Coins frottés mais bel exemplaire. /// In-8 de (6), 636 pp. Demi-chagrin marron, dos à nerf, tranches mouchetées. (Reliure de l'époque.) //// /// PLUS DE PHOTOS SUR WWW.LATUDE.NET‎

‎Théorie physiologique de la Musique fondée sur l'étude des sensations auditives. Traduit de l'allemand par M.G. Guéroult‎

‎Paris, G. Masson, 1874, in-8, [6]-636 pp, Demi-chagrin rouge de l'époque, dos à faux nerfs et fleuronné, tranches peigne, Nouvelle édition française (la première est de 1868) de cet ouvrage important, très recherché, illustré de nombreuses figures dans le texte. L'édition originale allemande, Die Lehre von den Tonempfindungen als physiologische Grundlage für die Theorie der Musik, a paru en 1863. Helmholz donne ici la définition du timbre et l'importance des harmoniques dans la formation des accords. Cachet ex-libris JNR en pied du titre. Frottements sur le plat supérieur, une charnière intérieure fragile. Garrison & Morton 1562 pour l'édition originale allemande. Couverture rigide‎

‎Bon [6]-636 pp.‎

‎Théorie physiologique de la Musique fondée sur l'étude des sensations auditives. Traduit de l'allemand par M.G. Guéroult‎

‎Paris, G. Masson, 1874, in-8, [6]-636 pp, Demi-chagrin rouge de l'époque, Nouvelle édition française (la première est de 1868) de cet ouvrage important, très recherché, illustré de nombreuses figures dans le texte. L'édition originale allemande, Die Lehre von den Tonempfindungen als physiologische Grundlage für die Theorie der Musik, a paru en 1863. Helmholz donne ici la définition du timbre et l'importance des harmoniques dans la formation des accords. Garrison & Morton 1562 pour l'édition originale allemande. Rares surcharges au crayon rouge. Quelques rousseurs, dos épidermé. Couverture rigide‎

‎Bon [6]-636 pp.‎