‎Physique‎

‎"KORTEWEG, D.J. & G. DE VRIES - THE KORTEWEG-DE VRIES EQUATION FOR THE SOLITARY WAVE‎

‎On the Change of Form of Long Waves advancing in a Rectangular Canal, and on a New Type of Long Stationary Waves.‎

‎London,Taylor and Francis, 1895. 8vo. Contemp. hcalf. Gilt lettering to spine. A stamp at foot of titlepage. In: No wrappers. In: ""The London, Edinburgh and Dublin Philosophical Magazine and Journal of Science"", Vol. XXXIX, Fifth Series. VI,(1),552 pp. a. 7 plates. The paper: pp. 422-443. Internally clean and fine.‎

‎"KRAFT, JENS.‎

‎Betænkninger over Neutons og Cartesii Systemata, tilligemed nye Anmærkninger over Lyset.‎

‎(København, 1747). 4to. In a later half calf binding with gilt lettering to spine. Previous owner's name to pasted down front end-paper. Without wrappers as issued in ""Videnskabernes Selskabs Skrifter, III. Del, 1747"". A nice and clean copy. Pp. 213-296. + 3 engraved plates.‎

‎First edition of one of Kraft's earliest and most important works, being a preliminary study to his seminal ""Forelæsninger over Mekanik"" (1763). It also constitute one of the earliest introductions to Newton in Danish.In 1747, he became a member of the Academy of Sciences, same year as the present thesis was published. Here, he takes a stand in favor of Newton against Descartes, in contrast to his admired teacher C. v. Wolff. Kraft concluded that while the Cartesian system was unreasonable and even inconsistent, Newton's physics perfectly aligned with the most reliable experiences, including the best astronomical observations. Furthermore, the Newtonian system was superior from a methodological standpoint, as it contained fewer hypotheses and was more simple and well-ordered than the Cartesian alternative.‎

Référence libraire : 61838

‎"KRATZENSTEIN, CHRISTIAN GOTTLIEB.‎

‎Forelæsninger over Experimental-Physiken, udkastede. (Oversat af H.C.H. Sandrue)‎

‎Kiöbenhavn, Schultz, 1791. Velbevaret samtidigt hldrbd. med rygforgyldning. (4),180 pp. Lille stempel nederst på titelblad. Rent, frisk eksemplar.‎

‎Den sjældne originaludgave af den første danske oversættelse af Kratzensteins ""Systema physicae experimentalis..."". Han blev på foranledning af Leonhard Euler ansat som ""Mechanicus"" ved Akademiet i St. Petersburg i 1748 og blev 5 år senere udnævnt til professor i København. Kratzenstein er mest kendt for sine experimenter over elektricitetens virkninger på forskellige områder, bl. indenfor medicinen (således var han den første, som ved hjælp af gnisten fra en Leydner-flaske, kurerede en paralyseret finger, og således grundlæggeren af elektro-terapien), og han var den første fysiker overhovedet, som søgte at udfinde forholdet mellem den elektriske kraft of dens virkningsafstand, på samme måde som gravitet er en simpel funktion af afstand. - Bibl. Danica II:108. - Poggendorff I:1314 (the German edition from 1758).‎

Référence libraire : 36142

‎"KRAFT, JENS.‎

‎Forelæsninger over Mekanik med hosføiede Tillæg (+) Forelæsninger over Statik og Hydrodynamik med Maskin=Væsenets Theorier som Anden Deel af Forelæsningerne over Mekaniken. 2 vols.‎

‎Sorøe, Jonas Lindgren, 1763 - 1764. 4to. Uniformly bound in two contemporary full sprinkled calf bindings with five raised bands. ""Söe Cadet Accadem:"" embossed to front boards. Wear to extremities, head of spines chipped and parts of the gilting worn off. A few annotations to front free end-paper in both volumes. Small stamp to upper outer corner on title-page in both volumes. Internally very nice and clean. (28), 656, (4) pp. + 14 folded engraved plate"" (16),1000 pp. + 47 folded engraved plates.‎

‎First edition of the most significant Danish physics work of the 18th century, being the first systematic exposition of Newtonian physics and mathematics in Denmark. Here he provides a systematic presentation of Newtonian physics and calculus. ""Kraft’s best-known work is a textbook on theoretical and technical mechanics (1763-1764). The book, written in an easy and fluent style, contains a series of lectures baied on Newtonian principle. Each lecture is provided with a supplement giving a more advanced mathematical exposition of the subject matter. In Denmark this work gave theoretical physics a firm basis as an academic subject, while its large section on machines stimulated the expansion of industry. The book was favorably received abroad and was trans. lated into Latin and German."" (DSB) Jens Kraft (1720–1765) was a Dano-Norwegian mathematician and philosopher. He was born in Frederikshald in Norway.While still a student in Copenhagen, he was influenced by Christian Wolff, having attended one of Wolff’s lectures during a visit to Halle. Later he was appointed professor of philosophy at the Sorø Academy, where he responded to Baumgarten’s Metaphysica with his own work, Metaphysik. Both philosophers structured their works into four divisions: Cosmologie, Ontologie, Psykologie, and Naturlig Theologie. Kraft distinguished between time and eternity asserting that “the finite can never attain eternity, but it can attain infinite time (Aevum), a time with a beginning but without an end.” In contrast, the infinite possesses true permanence. Biblioteca Danica II, 53.‎

Référence libraire : 61848

‎"KRAMERS, H.A.‎

‎Intensities of Spectral Lines on the Application of the Quantum Theory to the Problem of the relative Intensities of the Components of the fine Structure and of the Stark Effect of the Lines of the Hydrogen Spectrum. - [KRAMERS THE DOCTORAL THESIS]‎

‎København, Andr. Fred. Høst, 1919. 4to. Uncut, unopened in the original printed wrappers. Offprint from ""Memoires de L'Academie Royale des Sciences et des Letteres de Danemark"". Light miscolouring to extremities. Otherwise a very fine and clean copy. Pp. 287-384, XVI + 4 plates.‎

‎Offprint issue of Kramer's doctorial thesis. Kramer was Niels Bohr's first assistent when Bohr's Institute opened in 1920, later he returned to Utrecht and became sucessor to Ehrenfest. - The frequency of spectral lines did not coincide with a kinetic frequency of electrons, but was only partly explained by Bohr's correspondence principle. Kramers developed here in this work the mathematical formalism required to unite these ideas, leading to an interpretation of the intensities of Stark Components.""In his 1919 dissertation, Kramers calculated in detail the intensities and polarizations of the hydrogen spectral lines, including Zeeman and Stark effects. His results were in good, if not perfect, agreement with experimental data"". (Kragh, Quantum Generations, P. 157).‎

Référence libraire : 47628

‎"KRONIG, R. DE L.‎

‎Quantenmechanik, Bandenspektren und Molekülbau. Mit 19 Fig.‎

‎Leipzig, 1934. Orig. printed wrappers. Backstrip with tears. 68 pp. Offprint from ""Handbuch der Radiologie"" Bd. VI/2.‎

Référence libraire : 25769

‎"KRAMERS, H.A. - THE DOCTORAL THESIS.‎

‎Intensities of Spectral Lines. On the Application of the Quantum Theory to the Problem of the relaive Intensities of the Components of the Fine Structure and of the Stark Effect of the Lines of the Hydrogen Spectrum. With four Plates.‎

‎København, Høst & Søn, 1919. 4to. Orig.printed wrappers. (Offprint issue from ""D. Kgl. Danske Videnskabernes Selskab. Skr. Nat. Vid og Math. Afd. 8. Række, III.3.). Pp. 285-384,(2) a. 4 plates. Lower margin of frontwrapper faded.‎

‎"KRATZENSTEIN, CHRISTIAN GOTTLIEB.‎

‎Forelæsninger over Experimental-Physiken, udkastede. (Oversat af H.C.H. Sandrue)‎

‎Kiöbenhavn, Schultz, 1791. Samtidigt hldrbd. Forgyldt skindtitel. papirsetiket påsat øverst på ryg. Stempler på titelbladet. (4),180 pp. Nogle få spredte brunpletter.‎

‎"KRONIG, R. DE L.‎

‎Quantenmechanik, Bandenspektren und Molekülbau. Mit 19 Fig.‎

‎Leipzig, 1934. Orig. printed wrappers. Backstrip with tears. 68 pp. Offprint from ""Handbuch der Radiologie"" Bd. VI/2.‎

‎"L'ACADEMIE ROYALE DES SCIENCES - KÖNIGLICHE AKADEMIE DER WISSENSCHAFTEN IN PARIS.‎

‎Der Königl. Akademie der Wissenschaften in Paris Physische Abhandlungen. Erster- (Sechster Theil). Aus dem Französischen übersetzet von Wolf Balth. Adolph von Steinwehr. (Umfasst: 1. Theil 1692. 1693. 1699-1702. - 2. Theil 1703-1706. - 3. Theil 1707-1...‎

‎Breslau, Johann Jacob Korn, 1748-51. Large 8vo. Uncut in mounted orig. marbled wrappers, all 6 volumes later clotbacked. Wear to wrappers. Stamps on titlepages. Ca. 5000 pp. (each vol. separately paginated). Textillustrations and 104 engraved plates, some folding.Title-pages browned and brownspotted. Some browning and brownspots throughout.‎

‎Scarce first German translation of the pysical memoirs from the ""Mémoires de l'Academie des Sciences"", containing many importent papers by the leading French scientists: Amontons, Cassini, Bernoulli, Homberg, Lemery, la Hire, Reaumur, Tournefort, Maraldi, Delisle etc. etc.Of special importence are GOTTFRIED WILHELM LEIBNIZ: ""Erklärung der Arithmetica binaria, die sich nur der Charakteren 0 und I bedienet, nebst Anmerkungen von ihrem Nutzen und dem verstande, den sie den alten chinesischen Figuren des Fohi giebt."", pp. 88-93 (Bd. II). Leibniz' BINARY NUMBER SYSTEM, first published 1703. And JACOB (JACQUES) CASSINI ""Abhandlung von der Grösse und Figur der Erde"", pp. 431-756 and 14 engraved plates and maps.Poggendorff II, 1000‎

Référence libraire : 51397

‎"LARMOR, JOSEPH. - THE FITZGERALD-LORENTZ CONTRACTION CONFIRMED.‎

‎A Dynamical Theory of the Electric and Luminiferous Medium. - Part III. Relations with Material Medica. Received April 21, 1897, - Read May 13, 1897.‎

‎(London, Harrison and Sons, 1898). 4to. No wrappers as extracted from ""Philosophical Transactions"" Year 1897, Volume 190 - Series A. - Pp. 205-300, textillustr. Clean and fine.‎

‎First appearance of an importent paper announcing the first formulation of the complete Lorentz-transformation and with the first prediction of time dilation. ""It seems churlish however to deny that Larmor had gained an importent, if limited insight into time dilation, two years before Lorentz's striking similar and independent insight of 1899.""(Harvey R. brown in ""Physical relativity"", p. 61). - The paper also presents the ""Larmor formula"".It's notable that Larmor was the first who recognized that some sort of time dilation is a consequence of the Loretz transformation as well, because individual electrons describe corresponding parts of their orbits in times shorter for the [rest] system in the ratio 1/y.Parallel to the development of Lorentz ether theory, Larmor published the complete Lorentz transformations in the Philosophical Transactions of the Royal Society in 1897 (in the paper offered) some two years before Hendrik Lorentz (1899, 1904) and eight years before Albert Einstein (1905). Larmor predicted the phenomenon of time dilation, at least for orbiting electrons, and verified that the FitzGerald-Lorentz contraction (length contraction) should occur for bodies whose atoms were held together by electromagnetic forces. In his book Aether and Matter (1900), he again presented the Lorentz transformations, time dilation and length contraction (treating these as dynamic rather than kinematic effects). Larmor opposed Albert Einstein's theory of relativity (though he supported it for a short time). Larmor rejected both the curvature of space and the special theory of relativity, to the extent that he claimed that an absolute time was essential to astronomy.Larmor held that matter consisted of particles moving in the aether. Larmor believed the source of electric charge was a ""particle"" (which as early as 1894 he was referring to as the electron). Thus, in what was apparently the first specific prediction of time dilation, he wrote ""... individual electrons describe corresponding parts of their orbits in times shorter for the [rest] system in the ratio (1 - v2/c2)1/2"" (in the paper offered).‎

Référence libraire : 43015

‎"LAPLACE, PIERRE-SIMONE. - LAPLACE'S THEORY OF CAPILLARITY.‎

‎Considerations Sur la Théorie des phénomènes capillaires. (Lu à l'Academie des Sciences le 13 septembre 1819). (+) Application du calcul des probabilités aux opérations géodésiques de la méridienne de France. (+) Mémoire Sur l'Application du calcul...‎

‎Paris, Crochard, 1819. Contemp. hcalf, richly gilt spine. Light wear to top of spine and a few minor scratches. ""Annales de Chimie et de Physique, Par MM. Gay-Lussac et Arago."", Tome 12.. Entire volume offered. 448 pp. a. 1 folded engraved plate. Small stamps on verso of titlepage and plate. Laplace's papers: pp. 5-12, pp. 37-41 a. pp. 337-341.‎

‎The paper on Capillarity is the last version of this theory in which he refined it to take account of the effect of heat in reducing the attractive force between the particles of a liquid. ""The net attractive force was now taken as the difference between the innate attraction (the only force considered in the supplement to the ""Mecanique celeste"") and a repulsive force that was supposed to be caused by the presence of heat.""(DSB). - Using the theory of Boscovich, ""who assumed that between every two ultimate particles and along the lines connecting them forces act which are attractive for some distances and repulsive for others. Using this theory, with the added requirements that that the molecular forces diminish rapidly with increase of the distances between the molecules, Laplace was able to develop his theory of capillarity (referring to the offered paper).""(Timoshenko ""History of the Strenghts of Material"", p. 104).The 2 papers here offered on probability applied, were both incorporated into the third edition of ""Theoriques analytique des probabilities"" (1820).‎

Référence libraire : 43817

‎"LANDRIANI, MARSILIO.‎

‎Dell' utilità dei Conduttoti Elettrici. Dissertazione.....Publicata per Ordine de Governo. - [REPEATING FRANKLIN'S ELECTRICAL EXPERIMENTS]‎

‎Milano, Marelli, 1784. 8vo. Bound uncut in a fine later hvellum, spine gilt and gilt lettering to titlelabel. Engraved titlepage with an engraved illustration of different kinds of lightening experiments a la Franklin. XIV,304 pp. a. 1 folded engraved plate showing how to install lightening conductors on buildings. One engraved vignette and 1 fine engraved initial. Internally clean and fine, a wide-margined copy.‎

‎Scarce first edition of Landriani's large work on the funcioning of lightning conductors, on natural and artificial electricity, the Franklin experiments, and lightening-rods, which also includes a collection of letters from de Saussure, Toaldo and others, here printed for the first time. At the end a comprehensive catalogue of European buildings on which lightning rods were installed: ""Catalogo dei Conduttori Elettrice"".""Landriani's name is repeatedly linked to Volta's inventions (from the electrophorus to the pile) and especially to the eudiometer. The term (derived from the Greek ""eudia"" (""fair weather"") was first used by Landriani in the ""Recherche"" to indicate the instrument he had devised to measure the purity of the air.....Volta transformed the instrument, assigning it new tasks. In 1777 the eudiomter entered the history of science as a valued instrument for the analyzing of gases."" (DSB VII, 620-21).Wheeler Gift No. 523.‎

Référence libraire : 44317

‎"LANDAU, L.‎

‎Diamagnetismus der Metalle. - [LANDAU DIAMAGNETISM]‎

‎Berlin, Springer, 1930. 8vo. Bound in contemporary half cloth with gilt lettering, In ""Zeitschrift für Physik"", Band 64, 1930. Entire volume offered. Two stamps to title page, otherwise fine. Pp. 629-637. [Entire volume: VII, (1), 862 pp.].‎

‎First printing of Landau's ""fundamental work in the field of the theory of metals, showing that the degenerate electron gas possesses diamagnetic susceptibility"" (DSB), often referred to as Landau diamagnetism. ""His best known work from this time is his diamagnetism of metals in which he showed that not only the spins of free electrons contribute to the magnetic properties of a metal but also their orbits. The motion of such electrons is allowed only for discrete energy values, the Landau levels."" (Brandt, The Harvest of A Century).‎

Référence libraire : 49258

‎"LAUE, MAX von - AN EXPERIMENTAL PROOF OF THE GENERAL THEORY OF RELATIVITY.‎

‎Die Mitführung des Lichtes durch bewegte Körpernach dem Relativitätsprincip. + Zur Cohnschen Elektrodynamik.‎

‎Leipzig, Barth, 1907. No wrappers. Extracted from ""Annalen der Physik"", Vierte Folge, Bd. 23. Pp. 989-990 a. pp. 991-996. The leaves is punched in inner margins after cords. Fine and clean.‎

‎First edition of Laue's importent paper in which he gives an experimental proof of the non-addition and non-subtraction phenomena in respect of the velocity of light. - Laue was awarded the Nobel Prize in 1914.""Einstein’s special theory of relativity dispensed with the addition or subtraction of the velocities, hitherto assumed to be self-evident, and applied instead a special ""addition theorem."" In 1907 Laue demonstrated that this theorem readily yields Fizeau’s formula with the previously enigmatic Fresnel drag coefficient: u = c/n ± v(1 - 1/n2). Laue thereby furnished Einstein’s theory with an important experimental proof, which, along with the Michelson-Morley experiment and arguments from group theory, contributed to early acceptance of the theory. Having thus proved himself an expert in relativity theory, in 1910 Laue wrote the first monograph on the subject. He expanded it in 1919 with a second volume on the general theory of relativity"" the work went through several editions.""(DSB).‎

Référence libraire : 44822

‎"LAUE, MAX VON.‎

‎Die Fortpflanzung der Strahlung in dispergiernden und absorbierenden Medien.‎

‎(Leipzig, Johann Ambrosius Barth, 1905). 8vo. No wrappers. Extracted from ""Annalen der Physik"" Vierte Folge. Bd. 18. Pp. 523-566. [Entire offering: Pp. 413-638].‎

‎First appearance of Laue's paper on the propagation of radiation in dispersing and absorbing media. This caused a major‎

Référence libraire : 50547

‎"LANDAU, LEV (+) RUDOLF PEIERLS.‎

‎Erweiterung des Unbestimmtheitsprinzips für die relativistische Quantentheorie.‎

‎Berlin, Springer 1931. 8vo. In contemporary halv cloth with gilt lettering to spine. In ""Zeitschrift für Physik"", Bd. 69, 1931. Entire issue offered. Stamp to front free end-paper and titlepage, otherwise fine and clean. pp.56-69. [Entire volume: VII, (1), 861 pp.].‎

‎First printing of Landau and Peierls's important paper in the development of quantum field theory. The present paper became seminal for Bohr and Rosenfeld's 1933 paper which is often credited with having laid the foundation for quantum electrodynamics. Landau and Peierls published a critical analysis of the consequences of such limitations in a relativistic quantum theory of fields (second paper offered). Landau and Peierls came to the negative conclusion that in several cases, the concept of momentum was without physical meaning and quantities such as the strength of a field was un-measurable.‎

Référence libraire : 59478

‎"LANGLEY, S.P. - INVENTION OF THE BOLOMETER.‎

‎Le Bolomètre. Mémoire lu devant la Societe Mét´rorologique américaine, décembre 1880.‎

‎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 the plates. In ""Annales de Chimie et de Physique"", Cinquiéme Series - Tome XXIV. 576 pp. + 2 folded plates. Langley's paper: pp. 275-284, textillustrations.‎

‎First French edition of the paper in which Langley describes the function of his invention of the bolometer for measurements of the cosmic microwave background radiation. A bolometer is a device for measuring the power of incident electromagnetic radiation via the heating of a material with a temperature-dependent electrical resistance.""Correctly recognizing the need for measurements of the energy of radiation as a function of wavelenght, Langley developed a new instrument ""the bolometer"" between 1879 and 1881 to do this......The superior measurements by means of the bolometer, the newly discovered extent of the solar spectrum, and the new results for selective absorption of the earth’s atmosphere were significant contributions to the study of the sun and its effects on the earth.""(DSB).Langley was awarded the Nobe l in physics in 1908.The volume conatins also Gabriel Lippmann (Nobel Prize 1908) ""Princiope de la Coservation de L'électricité"", pp. 145-178 and Crooke's famous paper (in French) ""Sur la viscosité des Gaz trés raréfies"", pp. 476-547 with 1 plate.‎

Référence libraire : 46019

‎"LAMBERT, JOHANN HEINRICH.‎

‎Mémoire su la Résistance des Fluides avec la Solution du Probleme balistique.‎

‎(Berlin, Haude et Spener, 1767). 4to. No wrappers as issued in ""Mémoires de l'Academie Royale des Sciences et Belles-Lettres"", tome XXI, pp.102-188.‎

‎First edition. Together with Lambert's work is a mémoir by Johann Friedrich Meckel: Observations anatomiques sur la Glande Pineale, sur la Cloison transparante, et sur L'origine du Nerf de la septieme paire."" pp. 91-100, and 2 folded engraved plates. (1767). Meckel is known for his description of ""Meckel's Ganglion"" and ""Meckel's Cave"".‎

Référence libraire : 35779

‎"LANDAU, L. (+) R PEIERLS.‎

‎Quantenelektrodynamik im Konfigurationsraum. - [THE LANDAU-PEIERLS WAVE FUNCTION]‎

‎Berlin, Springer, 1930. 8vo. Bound in contemporary half cloth with gilt lettering, In ""Zeitschrift für Physik"", Band 62, 1930. Entire volume offered. Two stamps to title page, otherwise fine. Pp. 188-200. [Entire volume :VIII, 801 pp].‎

‎First printing of this important paper containing the first appearance of the Landau-Peierls wave function. ""Landau and Peierls argued that field measurements could not be performed unambiguously and hence that current quantum electrodynamics was inconsistent. The Landau-Peierls criticism caused concern until 1933, when Bohr and Rosenfeld showed that the consequences of quantrum electrodynamics were consistent with the best possible measurements of electromagnetic field quantities. (Kragh, Quantum Generations).‎

Référence libraire : 49259

‎"LAMBERT, JOHANN HEINRICH.‎

‎Sur quelques Instrumens Acoustiques.‎

‎(Berlin, Haude et Spener, 1770). 4to. No wrappers as issued in ""Memoires de L'Academie Royale des Sciences et Belles Lettres"", tome XIX, 1763. pp.87-124 and 2 folded engraved plates.‎

‎First edition of one of Lambert's importent papers on the acoustics and sounds in relation to musical instruments. Lambert performs basic experiments with the instruments and gives the results in a generalized mathematical form.‎

Référence libraire : 32594

‎"LAMBERT, JOHANN HEINRICH.‎

‎Sur la Densité de L'Air.‎

‎(Berlin, Chretien Frederic Voss, 1774. 4to. Uncut, without wrappers extracted from ""Nouveaux Mémoires de l'Academie Royale des Sciences et Belles-Lettres"", Année 1772., pp. 103-140 and 1 engraved plate.‎

‎First edition, the journal form. This work is an investigation that connects Lambert's studies on hygrometry - he actualy invented the Hygrometer - and on ballistics and friction.‎

Référence libraire : 39080

‎"LAMBERT, JOHANN HEINRICH. - HYDRODYNAMICS‎

‎Sur la Fluidité du Sable, de la Terre et d'autres Corps Mous, relativement aux loi de l'Hydrodynamique.‎

‎(Berlin, C.F. Voss, 1774). 4to. Uncut without wrappers as eXtracted from ""Nouveaux Mémoires de l'Academie des Sciences et Belles Lettres"", Annee 1772, pp. 33-64 and 1 engraved plate.‎

‎First edition. In this paper Lambert extends his theory of friction and tries to describe the fluidity of various semi-fluid substances according to the laws of Hydrodybamics.‎

Référence libraire : 39083

‎"LAMBERT, JOHANN HEINRICH. - APPLIED PHOTOMETRICS.‎

‎Sur la Vitesse du Son. (+) Memoire sur la Partie Photometrique de L'Art du Peintre. (2 Papers).‎

‎(Berlin, Haude et Spener, 1770). 4to. No wrappers, as issued in ""Mémoires de l'Academie Royale des Sciences et Belles Lettres"", Année 1768, tome XXIV, pp. 70-79 a. pp. 80-108 a. Clean and fine.‎

‎First printing of both papers. In the paper on photometrics Lambert uses his photometric theories on the art of painting, and it has a long, remarkable discussion of the technics used by Leonardi da Vinci. - The first paper deals with the propagation of sound waves in different media.‎

Référence libraire : 46558

‎"LANDÉ, A.‎

‎Termstruktur und Zeemaneffekt der Multipletts. - [FIRST APPEARANCE OF THE ""LANDÉ INTERVAL RULE""]‎

‎Braunschweig, Berlin, Vieweg & Sohn u. Julius Springer, 1923. 8vo. Bound in contemporary halfcloth. In ""Zeitschrift für Physik"", Bd. 15. (Entire volume offered). A stamp on front free end paper.. Pp.189-205. [Entire volume: IV,420 pp].‎

‎First appearance of Lalandé important paper in which the ""Landé interval rule"" was introduced for the very first time.""Lalandé interval rule states that when the spin-orbit interaction is weak enough to be treated as a perturbation, an energy level having definite spin angular momentum and orbital angular momentum is split into levels of differing total angular momentum, so that the interval between successive levels is proportional to the larger of their total angular momentum values."" (Morris, (1992). Academic Press dictionary of science and technology. P. 1201).‎

Référence libraire : 48932