‎Physique‎

‎"BECQUEREL, (ANTOINE) HENRI.‎

‎Mesure de la Rotation du Plan de polarisation de la Lumiere sous L'Influence magnétique de la Terre.‎

‎Paris, G. Masson, 1882. 8vo. Contemp. hcalf, raised bands, gilt spine. Light wear along edges. Small stamps on verso of titlepage. In: ""Annales de Chimie et de Physique"", 5e Series, Tome 27. 576 pp. and 5 folded engraved plates. (Entire volume offered). Becquerel's paper: pp. 312-347 and 1 folded engraved plate. Textillustrations. (apparatus).‎

‎First apperance of Becquerels first optical paper. Becquerel’s early research was almost exclusively optical. His first extensive investigations dealt with the rotation of plane-polarized light by magnetic fields (the paper offered). He turned next to infrared spectra (in the paper offered), making visual observations by means of the light released from certain phosphorescent crystals under infrared illumination. Becquerel is known for his discovery of radioactivity, for which he received the Nobel Prize for physics jointly with the Curies in 1903, and for other contributions to that field which he made during the halfdozen years when he was most active in it.‎

书商的参考编号 : 45998

‎"BECQUEREL, (ANTOINE) HENRI.‎

‎Mémoire sur L'Étude des Radiations Infra-Rouges au Moyen des Phénomenes de phosphorescence.‎

‎Paris, G. Masson, 1883. 8vo. Contemp. hcalf, raised bands, gilt spine. Light wear along edges. Small stamps on verso of titlepage. In: ""Annales de Chimie et de Physique"", 5e Series, Tome 30. 576 pp. and 3 folded engraved plates. (Entire volume offered). Becquerel's paper pp. 5-68 and 1 folded engraved plate.‎

‎First apperance of Becquerels early importent paper on the infrared spectra. Becquerel’s early research was almost exclusively optical. His first extensive investigations dealt with the rotation of plane-polarized light by magnetic fields. He turned next to infrared spectra (in the paper offered), making visual observations by means of the light released from certain phosphorescent crystals under infrared illumination. Becquerel is known for his discovery of radioactivity, for which he received the Nobel Prize for physics jointly with the Curies in 1903, and for other contributions to that field which he made during the halfdozen years when he was most active in it.‎

书商的参考编号 : 45997

‎"BECQUEREL, ANTOINE HENRI.- THE DOCTORIAL DISSERTATION.‎

‎Recherches sur les Variations des Spectres D'Absorption dans les Christaux. (+) Surles Variations des Spectres D'Absorption des Composé du Didyme.‎

‎Paris, G. Masson, 1888. Bound with the original printed wrappers to all 4 issues (8 wrappers) in contemp. hcalf. Wear to top of spine. Light wear along edges. Two small stamps on verso of titlepage. In ""Annales de Chimie et de Physique"", 6. Series - Tome XIV. 576 pp. The entire volume offered. Becquerel's papers pp. 170-257 a. pp.257-279.‎

‎First printing of Henri Becquerel's doctorial thesis. Becquerel is known for his discovery of radioactivity, for which he received the Nobel Prize for physics jointly with the Curies in 1903, and for other contributions to that field which he made during the half-dozen years when he was most active in it.After studying infrared spectra ""He then studied the absorption of light in crystals (1886-88), particularly its dependence of the plane of polarization of the incident light and the direction of its propagation through crystal (the papers offered). With these researches Becquerel obtained his doctorate from the Faculty of Sciences of Paris (1888) and election to the Academy of Sciences (1889).""(DSB I, p.558).The volume has other notable papers by Chappuis et Riviere, E. Edlund, M. Berthelot (3 papers).‎

书商的参考编号 : 43641

‎"BECQUEREL, EDMOND.‎

‎Des Lois du Dégagement de la Chaleur pendant le Passage des Courants électriques a Travers les Corps solides et liquides. (+) Des Effets produits sur les Corps par les Rayons solaires. (2 Papers).‎

‎Paris, Victor Masson et Cie, 1843. 8vo. Contemp. hcalf, raised bands, gilt spine. Light wear along edges. Small stamps on verso of titlepage. In ""Annales de Chimie et de Physique"", 3e Series - Tome IX. 512 pp. and 4 folded engraved plates. (The entire volume offered). Becquerel's papers: pp. 21-70 a. pp. 257-322. Some scattered browspots and foxing.‎

‎First appearance of two importent papers on heat, electricity and light. In the first paper he showed that Joule’s law governing the production of heat in the passage of an electrical current applied to liquids as well as to solids and in the second paper he revealed in the presence of Fraunhofer lines in photographs of the ultraviolet portion of the spectrum by spectroscopy. Earlier he had shown that rays at the red end of the spectrum reinforced or continued the chemical action initiated by rays at the violet end. He also demonstrated that phosphorescence was stimulated in different substances by specific frequencies of light and that at some frequencies the phosphorescent glow seemed to stop immediately after the cutting off of incident light rays.‎

书商的参考编号 : 44893

‎"BECQUEREL, EDMOND.‎

‎Recherches sur la conductibilité électrique des gaz à des températures élevées.‎

‎(Paris, Bachelier),1853. 4to. No wrappers. In: ""Comptes Rendus Hebdomadaires des Séances de L'Academie des Sciences"", Tome XXXVII [37] (No.1). Entire issue offered. Library stamp and category numers to verso of title page, vaguely showing on recto. Pp. 20-4. [Entire issue: 36 pp.].‎

‎First printing of Becquerel's important paper on gaze's electrical conductivity in high temperatures. Shiers, Early Television: #20‎

书商的参考编号 : 47198

‎"BECQUEREL, EDMOND. - INVENTION OF THE PHOSPHOROSCOPE.‎

‎Recherches sur divers Effets Lumineux qui résultent de l'Action de la Lumiere sur les Corps.(Ce Travail comprend les deux Mémoires présentés à l'Academie des Sciences le 16 novembre 1857 et le 24 Mai 1858). (Premiere-deuxieme Mémoire).‎

‎(Paris, Victor Masson et Fils, 1859). Without wrappers. In: ""Annales de Chimie et de Physique"", 3e Series - Tome 55, Cahier Janvier 1861. Pp. 5-128 a. 2 large folded engraved plates (emission-lines and the phosporoscope). The entire issue offered.‎

‎First appearance of Becquerel's first two pioneering studies on lluminiscent phenomena. ""It was in these studies that Becquerel first described the phosphoroscope, an instrument of his own invention consisting of a box sealed with two disks mounted on the same axis and pierced with holes arranged in such a way that light could not at any one time pass through the entire apparatus. By rapidly revolving these perforated disks, an observer could continously view substances in the dark only fractions of a second after they had been exposed to brilliant light"" and by regulating the speed of the revolution of the disks, one could measure the lenght of time that substances continued to glow after the exposure to light. Using this device, Becquerel was able to identify many new phosphorescent substances and to show that the phenomenon G.C. Stokes had named fluorescence in 1852 was in reality only phosphorescence of an extremely short duration....In this manner substances could be analyzed without physical or chemical alteration.""(DSB I, p. 556).Becquerel dis his most importent work in optics on the phenomena of luminescence. In the middle years of the nineteenth century, he virtually monopollized the significant discoveries made inthis field.(DSB).‎

书商的参考编号 : 44136

‎"BECQUEREL, EDMOND. - THE BEGINNING OF SOLAR-CELL-ENERGY.‎

‎Sur les effets électriques qui se produisent sous l'influence solaire.‎

‎(Paris, Bachelier), 1839. 4to. No wrappers. In: ""Comptes Rendus Hebdomadaires des Séances de L'Academie des Sciences"", Tome IX (No.22). Entire issue offered. Becquerel's paper: pp. 711-713.‎

‎First printing of this important paper, which together with Becquerel's paper ""Mémoire sur les effets èlectriques produits sous l'influence des rayons solaires"" and ""Recherches sur les effets de la radiation chimique de la lumière solaire, au moyen des courants électriques"", published the same year, marks the beginning of Solar-Cell-Energy, the first step in a long path to solar panels, and a technology of immense importence for humanity. In 1923 Albert Einstein received the Nobel Prize for his theories explaining the photoelectric effect (his 1905-paper).The ""photovoltaic effect"" is the basic physical process through which a solar cell converts sunlight into electricity. In 1839, nineteen-year-old Edmund Becquerel, a French experimental physicist, discovered the photovoltaic effect while experimenting with an electrolytic cell made up of two metal electrodes. Becquerel found that certain materials would produce small amounts of electric current when exposed to light.‎

书商的参考编号 : 49104

‎"BECQUEREL, HENRI - THE FIRST EVIDENCE OF A RADIOACTIVE TRANSFORMATION.‎

‎Sur la radioactivité de l'uranium.‎

‎(Paris, Gauthier-Villars), 1901. 4to. No wrappers. In: ""Comptes Rendus Hebdomadaires des Séances de L'Academie des Sciences"", Tome 133, No 24.. Pp. (969-) 1044. (Entire issue offered). Becquerel's paper: pp. 977-980.‎

‎First appearance of this historical paper in which Becquerel relates THE FIRST EVIDENCE OF A RADIOACTIVE TRANSFORMATION. ""Nothing that Becquerel subsequently accomplished (after his discovery of radioactivity in 1896) was as important as this discovery, by which he opened the way to nuclear physics. Nevertheless, there were two other occasions on which he stood directly on the path of history: when he identified electrons in the radiations of radium (1899 - 1900) and when he published the first evidence of a radioactive transformation (1901). (The paper offered).""(DSB).""To prove his supposition that the uranium would recover its activity, Becquerel set aside some of the inactive uranium solution and its radioactive barium sulfate precipitate for a period of 18 months. Late in 1901, he found that the uranium had completely regained its activity, whereas the barium sulfate precipitate had become completely inactive. Becquerel wrote: ""The loss of activity ... shows that the barium has not removed the essentially active and permanent part of the uranium. This fact constitutes, then, a strong presumption in favor of the existence of an activity peculiar to uranium, although it is not proved that the metal be not intimately united with another very active product.""‎

书商的参考编号 : 47430

‎"BECQUEREL, HENRI.‎

‎Influence d'un champ magnétique sur le rayonnement des corps radio-actifs. (Séance du Lundi 11 Decembre 1899).‎

‎(Paris, Gauthier-Villars), 1899. 4to. No wrappers. In: ""Comptes Rendus Hebdomadaires des Séances de L'Academie des Sciences"", Tome 129, No 24. pp. (985-) 1047. (Entire issue offered). Becquerel's paper: pp. 996-1001. 1 textillustr. Clean and fine.‎

‎First printing of an early importent investigation on the newly (1896) discovered phenomenon of radioactivity.""Toward the end of 1899 (his first report is dated 11 December), he began to investigate the effects on the radiation from radium of magnetic fields in various orientations to the direction of its propagation (in modern terms, the magnetic deflection of the beta rays from shortterm decay products in equilibrium with the radium). In this work he united two descriptive traditions, the magneto optics of his own experience and a line of qualitative studies of the discharge of electricity through gases. He soon moved from these to J. J. Thomson’s more radical program of quantitative observations on collimated beams, in which Thomson had shown (1897) that the cathode rays were corpuscular and consisted of streams of swiftly moving, negatively charged particles whose masses were probably subatomic. By 26 March 1900, Becquerel had duplicated those experiments for the radium radiation and had shown that it too consisted of negatively charged ions, moving at 1.6 × 1010 cm./sec. with a ratio of m/e = 10-7 gm./abcoul. Thus Thomson’s ""corpuscles"" (electrons) constituted a part of the radiations of radioactivity."" (DSB).‎

书商的参考编号 : 49600

‎"BECQUEREL, HENRI.‎

‎Note sur quelques propriétés du rayonnement de l'uranium et des corps radio-actifs.‎

‎(Paris, Gauthier-Villars), 1899. 4to. No wrappers. In: ""Comptes Rendus Hebdomadaires des Séances de L'Academie des Sciences"", Tome 128, No 13. Pp. (753-) 852. (Entire issue offered). Becquerel's paper: pp. 771-777.‎

‎First appearance of Henri Becquerel last paper on radio-activity in the first period, two years after his monumental discovery of radioactivity.‎

书商的参考编号 : 47426

‎"BECQUEREL, HENRI.‎

‎Recherches sur les rayons uraniques.‎

‎(Paris, Gauthier-Villars), 1897. 4to. No wrappers. In: ""Comptes Rendus Hebdomadaires des Séances de L'Academie des Sciences"", Tome 124, No 9. Pp. (429-) 480. (Entire issue offered). Becquerel's paper: pp. 438-444. A small tear to inner lower margin. Disbound.‎

‎First printing. In 1896 Becquerel made his landmark discovery of radioactivity and in this follow-up paper he further established some of the properties of the radiation so that it could be identified unambiguously.‎

书商的参考编号 : 49452

‎"BECQUEREL, HENRI.‎

‎Sur la lois de la décharge dans l'air de l'uranium électrisé.‎

‎(Paris, Gauthier-Villars), 1897. 4to. No wrappers. In: ""Comptes Rendus Hebdomadaires des Séances de L'Academie des Sciences"", Tome 124, No 15. Pp. (797-) 838. (Entire issue offered). Becquerel's paper: pp. 800-803.‎

‎First printing. In 1896 Becquerel made his landmark discovery of radioactivity and in this follow-up paper he further established some of the properties of the radiation so that it could be identified unambiguously.‎

书商的参考编号 : 49453

‎"BECQUEREL, HENRI.‎

‎Sur le rayonnement des corps radio-actifs. (Séance du Mardi 26 Décembre 1899).‎

‎(Paris, Gauthier-Villars), 1899. 4to. No wrappers. In: ""Comptes Rendus Hebdomadaires des Séances de L'Academie des Sciences"", Tome 129, No 26. Pp. (1201-) 1296. (Entire issue offered). Becquerel's paper: pp. 1205-1207. Clean and fine.‎

‎First printing of an early importent investigation on the newly (1896) discovered phenomenon of radioactivity.""Toward the end of 1899 (his first report is dated 11 December), he began to investigate the effects on the radiation from radium of magnetic fields in various orientations to the direction of its propagation (in modern terms, the magnetic deflection of the beta rays from shortterm decay products in equilibrium with the radium). In this work he united two descriptive traditions, the magneto optics of his own experience and a line of qualitative studies of the discharge of electricity through gases. He soon moved from these to J. J. Thomson’s more radical program of quantitative observations on collimated beams, in which Thomson had shown (1897) that the cathode rays were corpuscular and consisted of streams of swiftly moving, negatively charged particles whose masses were probably subatomic. By 26 March 1900, Becquerel had duplicated those experiments for the radium radiation and had shown that it too consisted of negatively charged ions, moving at 1.6 × 1010 cm./sec. with a ratio of m/e = 10-7 gm./abcoul. Thus Thomson’s ""corpuscles"" (electrons) constituted a part of the radiations of radioactivity."" (DSB).‎

书商的参考编号 : 49601

‎"BECQUEREL, HENRI.‎

‎Sur les radiations émises par phosphorescence. (+) Sur les radiations invisibles émises par les corps phosphorescents. (+) Sur quelques propriétés nouvelles des radiations invisibles émises par divers corps phosphorescents. (+) Sur les radiation... - [THE DISCOVERY OF RADIO-ACTIVITY]‎

‎Paris, Gauthier-Villars, 1896. 4to. Bound in contemporary half cloth with marbled boards. ""Comptes Rendus Hebdomadaires des Séances de L'Academie des Sciences"", Tome 122 (Entire volume offered). Two title labels with gilt lettering to spine. Minor wear to extremities, upper title label with a few nicks. Library stamp to title page, otherwise a fine and clean copy. Pp. 420-421" Pp. 501-502 Pp. 559-564 Pp. 689-694 Pp. 762-767" Pp. 1086-1088.‎

‎First appearance of the six landmark papers in which Becquerel documents his discovery of Radio-activity, PROMPTING THE NUCLEAR AGE.Becquerel was an expert in fluorescence and phosphorescence, continuing the work of his father and grandfather. Follwing the discovery of X-rays by Röntgen, Bexquerel investigated fluorescent materials to see if they also emitted X-rays. He exposed a fluorescent uranium salt, pechblende, to light and then placed it on a wrapped photographic plate.He found that a faint image was left on the plate, which he believed was due to the pichblende emitting the light it had absorbed as a more penetrating radiation.. However, by chace, he left a sample that had not been exposed to light on top of a photographic plate in a drawer. he noticed that the photographic plate also had a a faint image of the pechblende. After several chemical tests he concluded that these ""Becquerel rays"" were a property of atoms. He had, by chace, discovered radio-activity and prompted thee beginning of the nuclear age. He shared the Nobel Prize for Physics in 1903 with Marie and Pierre Curie. The ""Becquerel Rays"" were later discovered to be a composite of three forms of emanation, distinguished by Rutherford as alpha, beta and gamma rays.Dibner: 163 (the later Mémoire from 1903) - PMM: 393 (1903- Mémoire) - Garrison & Morton: 2001 (only the first paper). - Magie ""A Source Book in Physics"" p. 610 ff. - Norman:157.‎

书商的参考编号 : 46935

‎"BECQUEREL, HENRI.‎

‎Sur Une Propriété Nouvelle De La Matière, La Radio-Active. Les Prix Nobel En 1903. - [BECQUEREL'S NOBEL LECTURE]‎

‎Stockholm: P.-A. Norstedt & Fils, 1905. Large 8vo. (246x166mm). Original printed wrappers.‎

‎First edition of Becquerel's Nobel Lecture.""Becquerel attended a session of the 'Académie des Sciences' in Paris on 20 January 1896, when Jules Henri Poincaré exhibited a series of radiographs sent to him by Röntgen. He, like others, observed that the emission of X-rays from the cathode tube was accompanied by strong phosphorescence of the glass. He therefore suspected that other forms of induced phosphorescence might be accompanied by other hithero unknown rays. In February 1896 Charles Henry reported to the 'Académie' his discovery of that phosphorescence could be induced in certain substances by exposure to sunlight. In the same month Becquerel reported that uranium was among these substances. Like all his other early papers on the subject, this appeared in the 'Comptes rendus' and was entitled 'Sur les Radiations Invisibles' émises par les Corps Phosphorescents'. In a second paper, 'Sur quelques Propriétés Nouvelles des Radiations Invisibles', he reported the astonishing fact that uranium was capable of fogging photographic plates even without previous exposure to sunlight and when the plates themselves were completely protected from ordinary light. In a third paper, March 1896, 'Sur les Radiations invisbles émises par les d'Uranium' Becquerel discarded phosphorescence completely and declared that the emanations from uranium constituded an entirely new and unsuspected property of matter, which in his seventh paper he named 'radioactivité'. He also found that the uranium rays discharged a gold-leaf electroscope, which is still used as one method of detecting radio-activity.Becquerel also discovered that the residue of pitchblende, a natural uranium oxide, after the uranium had been extracted from it was about four times as radio-active as uranium itself. He therefore suggested to the Curies the importance of further investigations of the ore, with the result that they discovered radium. He continued to work on the subject until 1903, in which year he collaborated with Pierre Curie in a paper, 'Action Physiologique des Rayons du Radium', which is the starting-point of the treatment of disease by radio-active substances. In that year he also published ... ('Recherches sur une Propriété Nouvelle de la Matière' - the offered item) ... which is his definitive work, containing a chronological narrative of his investigations, his mature conclusions and a bibliography of two hundred and fourteen treatises on radio-activity, dating from his own first paper in 1896. The rays emitted by uranium were named in his honour 'Becquerel' rays. They were later discovered to be a composite of three forms of emanation, distinguished by Rutherford (in 1919) as alpha, beta and gamma rays and identified thus: alpha as helium nuclei, beta as electrons, and gamma as powerful X-rays."" - (PMM).In 1903 Becquerel shared the Nobel Prize in Physics with the Curies ""in recognition of the extraordinary services he has rendered by his discovery of spontaneous radioactivity"".‎

书商的参考编号 : 38047

‎"BECQUEREL, HENRI. - ESTABLISHING THE CONNEXTION BETWEEN ROTATORY POWERS AND MAGNETISM.‎

‎Recherches expérimentales sur la polarisation rotatoire magnétique.‎

‎Paris, G. Masson, 1877. 8vo. Contemp. hcalf, raised bands, gilt spine. Light wear along edges. Small stamps on verso of titlepage. In: ""Annales de Chimie et de Physique"", 5e Series,Tome 12. - 576 pp. a. 1 folded plate. (The entire volume offered). Becquerel's paper: pp. 5-87.‎

‎First edition of Henri Becquerel's importent study of the magnetic substances in which he sets forth his discovery that ""the magnetic rotation of the bodies is connected with their refractive index and with another function that varies with their specific magnetism"". For the first time it was showed that there is a connexion between the rotatory power and the magnetic properties of matter.The volume contains other importent papers, more than 10 papers by , MARCELLIN BERTHELOT, mainly on Thermo-Chemistry.‎

书商的参考编号 : 47427

‎"BECQUEREL, HENRI. - NAMING ""URANIUM RAYS""‎

‎Sur diverses propriétés des rayons uraniques.‎

‎Paris, Gauthier-Villars, 1896. 4to. No wrappers. In: ""Comptes Rendus Hebdomadaires des Séances de L'Academie des Sciences"", Tome 123,, No 21. Pp. (771-) 854. (Entire issue offered). Fabry and Perot's paper: pp. 802-805.‎

‎First printing of one of Becquerel's importent papers relating to his discovery of radioactivity this same year. Here he confirms that uranium salts emits some forms of radiation and these rays he names ""rayons uraniques"" (URANIUM RAYS)‎

书商的参考编号 : 53366

‎"BECQUEREL, HENRI. - THE DISCOVERY OF RADIO-ACTIVITY - THE BEGINNING OF THE NUCLEAR AGE‎

‎Sur les radiations émises par phosphorescence. (+) Sur les radiations invisibles émises par les corps phosphorescents. (+) Sur quelques propriétés nouvelles des radiations invisibles émises par divers corps phosphorescents. (+) Sur les radiation...‎

‎Paris, Gauthier-Villars, 1896. 4to. Near contemp. full cloth. Spine gilt and with gilt lettering. Bookmark, ""The Chemists Club"" in gold on lower part of spine. Light wear along edges. In: ""Comptes Rendus Hebdomadaires des Séances de L'Academie des Sciences"", Tome 122 (Entire volume offered).1633 pp. The papers: 420-421, pp. 501-502, pp. 559-564, pp. 689-694, pp. 762-767 and pp. 1086-1088.‎

‎"BEER, AUGUST - THE BEER-LAMBERT-BOUGUER LAW.‎

‎Bestimmung der Absorption des rothen Lichts in farbigen Flüssigkeiten.‎

‎(Leipzig, Johann Ambrosius Barth, 1852). Without wrappers as issued in ""Annalen der Physik und Chemie. Hrsg. von J.C. Poggendorff"", 86. Bd., 1. issue (""Heft"" No 5, 1852). Entire issue offered. Pp. 1-160 a. 1 engraved plate. Beer's paper: pp.. 78-90. Clean and fine.‎

‎"BEGUELIN, (N.).‎

‎Remarques et Observations sur les Couleurs Prismatiques et sur L'Analyse Physique, et Metaphysique de la Sensation des Couleurs en Général.‎

‎(Berlin, Haude et Spener, 1766). 4to. No wrappers, as issued in ""Mémoires de l'Academie Royale des Sciences et Belles-Lettres"", tome XX, pp. 297-363 and 3 folded engraved plates.‎

‎"BELL, ALEXANDER GRAHAM. - ""THE GREATEST INVENTION I HAVE EVER MADE"": THE PHOTOPHONE.‎

‎On the Production and Reproduction of Sound by Light. (Read before the American Association for the Advancement of Science, in Boston, August 27, 1880).‎

‎(New Haven), 1880. 8vo. Modern plain wrappers. In: American Journal of Science"", Third series, Vol. XX, No. 118, October 1880. Frontispiece-plate. Pp. 257-352 (entire issue offered). Bell's paper: pp. 305-324 and 11 textillustrations. A small stamp to verso of plate and the first leaf.‎

‎"BELL, ALEXANDRE (ALEXANDER) GRAHAM. - BELL, ALEXANDER GRAHAM. - ""THE GREATEST INVENTION I HAVE EVER MADE"": THE PHOTOPHONE.‎

‎De la Production et de la Reproduction du Son par la Lumière. Mémoire lu à l'Association américaine pour l'avancement des Sciences, au Congrès de Boston, le 27 août 1880. (+) Les Récepteurs photophoniques de Sélénium. (Cette Note fait suite au M´wem...‎

‎Paris, G. Masson, 1880. 8vo. Contemp. hcalf, raised bands, gilt spine. Light wear along edges. Small stamps on verso of titlepage. In: ""Annales de Chimie et de Physique"", 5e Series, Tome 21. 576 pp. and 2 folded engraved plates. (Entire volume offered). Bell's paper: 399-430. With 11 fine textillustrations (showing the apparatus). Clean and fine.‎

‎"BELL, M. A. GRAHAM.‎

‎De la production du son par l'energie radiante. - [FIRST FRENCH PUBLICATION OF BELL'S PHOTOPHONE]‎

‎Paris, Imprimerie Gauthier-Villars, 1881. 8vo. Contemporary half calf, raised bands, gilt spine. Light wear along edges. Two small stamps on verso of title-page, and one on verso of last plate. In ""Annales de Chimie et de Physique"", Cinquiéme Series - Tome XXIII. 576 pp. + 3 plates. G. Bell's paper: pp. 397-432, pp. and 14 figures of experimental apparatus etc. The entiree volume offered. Fine and clean copy.‎

‎"BELL, R. E. (+) M. H. JØRGENSEN.‎

‎Mean Lives of Positrons in Aluminum and the Alkali Metals.‎

‎(Montreal), 1960. 8vo. In the original yellow printed stapled wrappers. Offprint from ""Canadian Journal of Physics"", no. 38, 652, 1960. Very fine and clean. Pp. (2), 653-664.‎

‎"BERNOULLI, (JOHANN). (+) NICOLAS (NIKOLAUS) BERNOULLI. - VIS-VIVA CONTROVERSY‎

‎Extrait D'une Lettre de M. Bernoulli, écrite de Basle 10. Janvier 1711, touchant la maniere de trouver les forces centrales dans des milieux resistans en raisons composée de leurs densites & des puissances quelques des vitesses du mobile. (+) Addition...‎

‎(Paris, L'Imprimerie Royale, 1714). 4to. Without wrappers. Extracted from ""Mémoires de l'Academie des Sciences. Année 1711"". Pp. 47-53 a. pp. 53-56 (Nicolas).‎

‎First appearance of an importent paper in mathematical physics. Bernoulli had shown that the principle of virtual velocities could be shown in analytical form. The principle can be derived from the energy principle and he applied this principle several times to mechanical systems of central forces. For these forces he applied the vis viva equation to the inverse two-body problem. For the corresponding problem of centrally accelerated motion in resisting medium he solved the differential equations and determined the central force in accordance with the Huygens formula(in the paper offered). - The Addenda by his his nephew, Nicolas Bernoulli, best known for the fundamental work ""Ars Conjectandi"" from 1713.‎

书商的参考编号 : 44748