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Ueber die Identität der Schwingungen des Lichts mit den elektrischen Strömen. (And Riemann:) Ein Beitrag zur Elektrodynamik. (2 Papers). - [TWO MILESTONE PAPERS ON THE THEORY OF ELECTROMAGNETISM]
Leipzig, Johann Ambrosius Barth, 1867. Contemp. hcalf, raised bands, gilt spinewith gilt lettering. A few scratches to binding. In ""Annalen der Physik und Chemie. Hrsg.von Poggendorff"", Bd. 131. (Entire volume offered). (2),X,660 pp. and 5 engraved plates. Small stamps to verso of titlepage and to verso of plates. Clean and fine.
First German edition (which originally appeared the same year in Danish in ""Oversigt over det Kongelige Danske Viidenskabernes Selskabs Forhandlinger"") of Lorenz' paper, which contains his important studies on the electromagnetic theory of light in which he - less than two years after, but independently of, Maxwell - found that LIGHT MIGHT BE INTERPRETED AS ELECTROMAGNETIC WAVES, and that his equations lead to the CORRECT VALUE FOR THE VELOCITY OF LIGHT. AND: First appearance of RIEMANN'S important paper (issued posthumously) in which he introduces the concept of ""RETARDED POTENTIALS"". Riemann suggests that Poisson's equation be modified by introducing terms which, though too small to be appreciable in ordinary experiments, would be capable of accounting for the propagation of electrical effects through space with a finite velocity c. This, so far as it goes, is in agreement with the view now accepted as correct.""The procedure which Lorenz followed was that of which Riemann had suggested in 1858 (the present paper by Riemann, which was published for the first time in 1867), namely, to modify the accepted formula of electrodynamics by introducing terms which, though too small to be appreciable in ordinary laboratory experiments, would be capable of accounting for the propagation of electrical effects through space with a finite velocity...The (Lorenz-) equations are, however, the fundamental equations of Maxwell's theory"" and therefore the theory of L. Lorenz is practically equivalent to that of Maxwell, so far as concerns the propagation of electromagnetic disturbances through free aether.....he suggested that ALL LUMINOUS VIBRATIONS MIGHT BE CONSTITUTED BY ELECTRIC CURRENTS, and hence that there was 'no longer any reason for maintaining the hypothesis of an aether, since we can admit that space contains sufficient ponderable matter to enable the disturbance to be propagated"" (Edmund Whittaker in ""A History of the Theories of Aether and Electricity I"", p. 267-70).""Maxwell seems to have considered the great paper of L. Lorenz on retarded potentials (published simultaneously in 1867 with a paper written in 1858 by B. Riemann on the same theme) as insufficiently supportive of his vision of a dynamical theory of theelectromagnetic field, whereas the present attitude is that Riemann and Lorenz made important contributions to the Maxwellian view."" (Kirk T. McDonald in ""Maxwell's Objection to Lorenz' Retarded Potentials"").
?uvres scientifiques
Copenhague, Librairie Lehmann & Stage, 1899, , 2 vol. in-8 : 210 pp. + 315 pp, Broché, couverture originale imprimée, Recueil de mémoires du mathématicien et physiciste danois Ludvig Lorenz, publiés aux frais de la fondation Carlsberg (le brasseur danois) qui finança ses recherches. Il comprend ses études sur la lumière, la conductivité thermique et électrique. Cachets et étiquettes de l'Institut catholique de Paris. Couverture légèrement défraîchie. État intérieur satisfaisant. Couverture rigide
Bon 2 vol. in-8 : 210 pp. + 315
"LORENZ, L. (LUDVIG VALENTIN). - ESTABLISHING LORENZ' FORCE LAW.
Reference : 52157
(1873)
Kviksølvets elektriske Ledningsmodstand i absolut Maal.
Kjøbenhavn, Bianco Luno, 1873. Original clothbacked printed boards. Offprint from ""Oversigter over d. K.D. Vidensk. Selskabs Forhandlinger. 1873, Nr. 1). A stamp on title-page. 20 pp. with 1 textillustration (apparatus). Scattered brownspots. Inscribed from the author on top of frontcover ""Vensk. fra Forf"" (i.e. with friendship from the author).
Extremely scarce first edition in the OFFPRINT issue with inscription from the author. Here Lorenz established the method for absolute ohm determination by means of the elctromotive force and the geometrical dimensions of his apparatus. The paper was immideately translated into German and published the same year in Annalen der Physik und Chemie.Lorenz is well known for his achievements in optics, the formula for dependence of refraction upon specific gravity (the Lorentz-Lorenz formula), and his electromagnetic theory of light, developed in a relatively unknown paper of 1867, two years after Maxwell’s famous paper on the same subject.
"LORENZ, L. (LUDVIG VALENTIN). - ESTABLISHING THE ELECTRO-MAGNETIC THEORY OF LIGHT.
Reference : 53255
(1867)
Om Identiteten af Lyssvingninger og elektriske Strømme. Meddelt den 25. Jan. 1866. (On the Identity of light- vibrations and electrical Currents - Ueber die Identität der Schwingungen des Lichts mit den elektrischen Strömen - Sur l'identité des vibrat...
Kjöbenhavn, Bianco Luno, 1867. Contemp. hcalf. Gilt spine with gilt lettering. In: ""Oversigt over det Kongelige danske Videnskabernes Selskabs Forhandlinger... i Aaret 1867"". X,273,49,(3) pp., textillustrations and plates. (Entire volume offered). Lorenz's paper: pp. 26-45 and pp. 9-16 (Resumé en Francais). Clean and fine.
Scarce first edition of Lorenz' landmark paper, which contains his important studies on the electromagnetic theory of light in which he - less than two years after, but independently of, Maxwell - found that LIGHT MIGHT BE INTERPRETED AS ELECTROMAGNETIC WAVES, and that his equations lead to the CORRECT VALUE FOR THE VELOCITY OF LIGHT. ""The procedure which Lorenz followed was that of which Riemann had suggested in 1858, namely, to modify the accepted formula of electrodynamics by introducing terms which, though too small to be appreciable in ordinary laboratory experiments, would be capable of accounting for the propagation of electrical effects through space with a finite velocity...The (Lorenz-) equations are, however, the fundamental equations of Maxwell's theory"" and therefore the theory of L. Lorenz is practically equivalent to that of Maxwell, so far as concerns the propagation of electromagnetic disturbances through free aether.....he suggested that ALL LUMINOUS VIBRATIONS MIGHT BE CONSTITUTED BY ELECTRIC CURRENTS, and hence that there was 'no longer any reason for maintaining the hypothesis of an aether, since we can admit that space contains sufficient ponderable matter to enable the disturbance to be propagated"" (Edmund Whittaker in ""A History of the Theories of Aether and Electricity I"", p. 267-70).
Om Elektricitetens Forplantning. (On the propagation of Electricity).
Kjøbenhavn, Bianco Luno, 1873. Contemp. clothbacked blank boards. Offprint from ""Oversigter over d. K.D. Vidensk. Selskabs Forhandlinger. 1879"". A stamp on title-page. (2),32 pp. Scattered brownspots.
First edition, offprint issue. Lorenz is well known for his achievements in optics, the formula for dependence of refraction upon specific gravity (the Lorentz-Lorenz formula), and his electromagnetic theory of light, developed in a relatively unknown paper of 1867, two years after Maxwell’s famous paper on the same subject.
