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Displayed below are some selected recent viaLibri matches for books published in 1869

        Im Auftrag Sr. Majestät des Königs von Preussen mit dem englischen Expeditionscorps in Abessinien.

      Mit Holzstich-Portrait, gefalt. lithogr. Karte und 3 gefalt. Tabellen. VII, 182 S., 1 Bl. HLdr. d. Zt. Erste Ausgabe. - Fumagalli 310; Kainbacher II, 344; Henze IV, 658. - Berieben, oberes Kapital mit kl. Fehlstelle. Gestempelt, Vortitel mit kleinen Löchern, leicht gebräunt und fleckig.

      [Bookseller: Antiquariat Turszynski]
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        Opere complete... traduzione eseguita sulle migliori e piu' recenti edizioni francesi con la nomenclatura linnejana e la classificazione di cuvier e con aggiunte note ed oservazioni estratte dalle opere dei piu' illustri naturalisti italiani e stranieri. napoli, stabilimento tipografico, 1869-78.

      Quindici volumi di cm. 26, pp. 8.000 ca. complessive. Con ritratto dell'autore e 202 belle tavole incise in rame e finimente colorate. Legatura coeva in mezza pelle con piccole punte, dorsi lisci con titoli in oro. Complessivamente genuino e ben conservato con ciascuna delle tavole protetta da velina originale. Non comune a trovarsi completo come il presente esemplare. Il volume quindicesimo titola: ""Vita e tempi di Buffon"".

      [Bookseller: Studio Bibliografico Benacense]
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        La Chaleur solaire et ses applications industrielles. Deuxième Édition. Revue et considérablement augmentée.

      Paris, 1869. 8vo. Uncut. Original printed wrappers. Some soiling to wrappers, and spine quite worn. Book block a bit loose. Internally only a bit of occasional brownspotting. (6), 294 pp. + two folded plates. Illustrated.. Presentation-copy of the scarce first edition thus, being the much revised and expanded second edition of the first book explicitly devoted to solar energy, "Solar Energy and its Industrial Applications". This second edition, illustrating for the first time the now world-famous "sun Engine" of 1878, which became the greatest and most famous "sun machine" ever built, is of equal importance to the first. The fold-out illustration which appears here has become the most famous illustration of a solar powered machine and has been reproduced in all histories about solar energy ever since. This seminal second edition was expanded and revised on the basis of Mouchot's demonstration of his groundbreaking solar engine at the 1878 Paris exhibition. "He made a number of notable public demonstrations of his inventions. With Abel Pifre, he demonstrated a solar generator that powered a steam engine at the 1878 Paris Exhibition. Mouchot's exhibition engine included a mirror over 13 feet (3.96 meters) in diameter and a 21-gallon (79.5 liters) boiler. The boiler generated seven atmospheres of pressure and drove an ice-maker that produced a "solar" block of ice." (The Energy Library). Mouchot won the gold medal for his amazing 1878 sun machine at the Universal Exposition in Paris. An amazing feature of this groundbreaking machine was the demonstration of its ability to produce ice using concentrated solar heat. With this machine, Mouchot anticipated solar refrigerators, which he foresaw as becoming greatly important in hot climates, where sun-generated ice would help prevent food from spoiling.The PRESENTATION-INSCRIPTION to the half-title reads as thus: "à Monsieur Vanaut/ Expert-Comptable [i.e. professional accountant]/ hommage de l'auteur/ A. Mouchot". Auguste Mouchot was a French mathematics teacher, who in the 1860'ies became famous as the designer (and patent-taker) of the first machine that generated electricity with solar thermal energy electricity by the exposure of the sun, causing a revolution in the development of solar thermal power. Mouchot began his work with solar energy in 1860 after expressing grave concerns about his country's dependence on coal. In 1869 he published the first edition of his seminal "La Chaleur Solaire", which constitutes a milestone of what we now call "green energy", as it laid the foundation for our understanding of the conversion of solar radiation into mechanical power driven by steam.His work on solar energy and on the development of his sun machine forms the basis for the later developments on solar energy. "The work of Adams, Ericsson, and Shuman had been directly influenced by the solar conceptions of Augustin Mouchot, a man who arrived on the scene in nineteenth century France at precisely that moment when his ideas were likely to attract the most attention. It was a time when French industrial might was at a peak and her leaders open to new ideas, none more so than her emperor. " (Kryza, The Power of Light, p. 147). "His initial experiments involved a glass-enclosed, water-filled iron cauldron, in which sunlight passed through a glass cover, heating the water. This simple arrangement boiled water, but it also produced small quantities of steam. Mouchot added a reflector to concentrate additional radiation onto the cauldron, thus increasing the steam output. He succeeded in using his apparatus to operate a small, conventional steam engine. Impressed by Mouchot's device, Emperor Napoleon III offered financial assistance, which Mouchot used to produce refinements to the energy system. Mouchot's work help lay the foundation for our current understanding of the conversion of solar radiation into mechanical power driven by steam.The publication of his book on solar energy, "La Chaleur solaire et ses Applications industrielles" (1869), coincided with the unveiling of the largest solar steam engine he had yet built. This engine was displayed in Paris until the city fell under siege during the Franco-Prussian War in 1871, and was not found after the siege ended." (The Energy Library). "By 1878, Mouchot had quintupled the size of the boiler that created the solar-heated steam from a relatively modest 10 gallons to an industrial-grade 50-gallon tank. He invented a boiler design made of many tubes placed side by side with a capacity of 35 gallons for water and 15 for steam. To validate his work, Mouchot seems to have ben the only inventor of a solar plant (except Frank Shuman) who had his apparatus tested by independent engineers." (Kryza, p. 164). After having exhibited his sun machine in 1869, Mouchot received financial assistance in order to further develop his great invention. In September 1872, he received financial assistance from the General Council of Indre-et-Loire to install an experimental solar generator at the Tours library. He presented a paper on the generator to the Academy of Sciences on 4 October 1875, and in December of the same year he presented to the Academy a device he claimed would, in optimal sunshine, provide a steam flow of 140 liters per minute. Later the following year he sought permission from the ministry to take leave from his teaching position in order to develop an engine for the Universal Exhibition of 1878, and in January 1877 he obtained a mission and a grant for the purchase of materials and execution of his solar engines in French Algeria, where sunlight was in abundance. The director of science missions recommended Mouchout to the Governor of Algeria, stressing the importance of his mission to France, "for science and for the glory of the University".Partly for political reasons, seeing the effect that industrial and technological changes had upon society and the peoples of Algeria, Mouchot asked for a leave of absense that would allow him to return to France. "The French colonial authorities , eager to possess the inventions they felt they had already paid for, refused. But they lent Mouchot a sympathetic ear and promised to improve local conditions. Temporarily, he seemed mollified. Following a year of testing designs for an ever-larger concentrator suitable for tropical use, Mouchot presented his findings to the authorities in Algiers. They were so impressed with the models and sketches that they awarded him 5000 francs to construct "the largest mirror ever built in the world" for a huge sun machine that would represent Algeria in yet another unversal exposition in Paris. There, it was hoped, it would garner a number of prizes, win additional financing, and then be shipped back to Africa and used commercially. His money in hand, Mouchot returned to France to begin construction of his new project.With the help of a new assistant, Abel Pifre, Mouchot completed the new solar machjine in September 1878. At its widest point, the cone-shaped mirror measured twice the diameter of the device shown at Tours the previous year, and its total reflecting surface was four times greater. The boiler too had an innovative design: long vertical tubes were fastened side by side to form a circular column at the focus of the reflector. As planned, the solar engine was put on display in the French capital. Mouchot's giant solar machine entertained exposition visitors by pumping 500 gallons of water per hour, distilling alcohol, and cooking food. It was able to achieve a head of steam in far less time than previous models.The most noteworthy demonstration occurred on September 22, 1878, as Mouchot recounted: "Under a slightly veiled but continually shining sun, I was able able to raise the pressure in the boiler to 91 pounds ... [and] in spite of the seeming paradox of the statement, [it was] possible to use the rays of the sun to make ice."Mouchot was able to make ice because he had connected the solar motor to a heat-powered refigeration device invented by Ferdinand Carré in the 1850's. Mouchot saw an important future for solar refrigerators in hot climates, where sun-generated ice would help prevent food from spoiling. The average Parisian spectator, hardly aware of the scientific principles at work, was amazed - this was magic indeed, the burning heat of the sun transformed into ice." (Kryza, pp. 170-72)

      [Bookseller: Lynge & Søn A/S]
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