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Abila of the Decapolis, Pella, and Northern 'Ajlûn, "Within the Decapolis." [THREE BOOKS IN ONE VOLUME].

1889Three books in one volume. Crown Octavo. Pp. 51; 78; 207. Plus three folding lithographed maps, one of which is coloured, each as frontispiece to each book; two lithographed plans bound in Book III. With numerous engraved illustrations, some full-page, throughout. Indices of names with transliteration, Arabic script, and translation. Hardcover, bound in the original publisher's ochre cloth, lettered in black, illustration stamped in gilt on cover. In a very fine condition. Excellent copy of a lovely book. ~ First edition. Three books in one volume, published 1889, 1895, 1890 respectively. Provenance: Noted classicist Dr. Henriëtte Boas' copy, with her bookplate. Schumacher was the first explorer to survey the regions described here, and his minute and thorough scientific observations, notes, maps, drawings, and sketches were prepared for publication at the request of the Palestine Exploration Fund by his friend, the explorer Guy le Strange. They were published here for the first time. Gottlieb Schumacher (1857) settled at a very young age with his family in Haifa, where his father, a member of the "Temple Association" designed most of the buildings of the German Colony. Following the completion of his engineering studies in Stuttgart, he returned to Haifa and was appointed Chief Engineer for the Province of Akko. He designed many buildings and was a leading figure in civil engineering. One of his most important projects was the survey of the Golan, Hauran, and the Ajlun districts in preparation for the construction of the Damascus-Haifa railway. In the course of this survey he produced the first accurate maps of these regions, along with detailed descriptions of the archaeological remains and the present villages. He published many other reports and books on his discoveries, supported by the Palestine Exploration Fund. With the outbreak of World War I the Templar community left for Germany. Schumacher returned in 1924 to his home on the Carmel, where he died a year later. Although he was born in Ohio, U.S.A., Gottlieb was brought-up and educated as a German. "I beg to through myself on the indulgence of my readers for the defects of style," he once wrote, "for my work has been perforce written in a language which, though familiar to me, is not my own." Scarce. [Descriptive text Copyright Librarium, The Hague]

Librarium · Pays-Bas620,00 €

BOLTZMANN, LUDWIG - THE STEFAN-BOLTZMANN LAW - BLACKBODY RADIATIONBiblio.com

Ableitung des Stefan'schen Gesetzes betreffend die Abhängigkeit der Warmestrahlung von der Temperatur aus der electromagnetischen Lichttheorie.

1884réf. 43536Leipzig Johann Ambrosius Barth 1884. Without wrappers as issued in "Annalen der Physik und Chemie. Hrsg. von G. Wiedemann." Neue Folge Bd. 22 6. Heft = No 6. Titlepage to vol. 22. Pp. 145-304 entire issue offered "Heft" 6. Boltzmann's paper: pp. 291-294. Small stamp to titlepage and verso of. First appearance of this importent paper in which Boltzmann uses the second law of thermodynamics and Maxwell's electromagnetic theory to derive theoretically based on Stefan's experimental observations the proportionality of the radiation emitted from a body and the fourth power of the temperature of the body in Kelvin units. "The law show a possible connection between thermodynamics and electromagnetism that was exploited in the later quantum theory. In the 1920s it was applied by Edington and others in explaining the equilibrium of stellar atmospheres."DSB II p. 266."The law states that the total energy radiated per unit surface area of a black body per unit time known variously as the black-body irradiance energy flux density radiant flux or the emissive power is directly proportional to the fourth power of the black body's thermodynamic temperature T also called absolute temperature.The Stefan Boltzmann law was experimentally discovered in the year 1879 by Josef Stefan and deduced 1884 by Ludwig Boltzmann theoretically by thermodynamic considerations from the classical electromagnetic theory of the radiation. In the year 1900 thus 21 years after the Stefan Boltzmann law discovered Max Planck the Planck radiation law designated after it from which the Stefan Boltzmann law follows simply by integration over all directions and wavelengths. The Planck radiation law could attribute the Stefan Boltzmann constant also for the first time with the introduction of the quantum of action h to fundamental natural constants."Parkinson "Breakthroughs" 1883 P. unknown

Herman H. J. Lynge & Søn A/S · Danemark4 500,00 DKK≈ 602,04 €

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