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1 davy
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2 Davy
m.Davy, Sir Humphrey Davy. -
3 Davy, Sir Humphry
[br]b. 17 December 1778 Penzance, Cornwall, Englandd. 29 May 1829 Geneva, Switzerland[br]English chemist, discoverer of the alkali and alkaline earth metals and the halogens, inventor of the miner's safety lamp.[br]Educated at the Latin School at Penzance and from 1792 at Truro Grammar School, Davy was apprenticed to a surgeon in Penzance. In 1797 he began to teach himself chemistry by reading, among other works, Lavoisier's elementary treatise on chemistry. In 1798 Dr Thomas Beddoes of Bristol engaged him as assistant in setting up his Pneumatic Institution to pioneer the medical application of the newly discovered gases, especially oxygen.In 1799 he discovered the anaesthetic properties of nitrous oxide, discovered not long before by the chemist Joseph Priestley. He also noted its intoxicating qualities, on account of which it was dubbed "laughing-gas". Two years later Count Rumford, founder of the Royal Institution in 1800, appointed Davy Assistant Lecturer, and the following year Professor. His lecturing ability soon began to attract large audiences, making science both popular and fashionable.Davy was stimulated by Volta's invention of the voltaic pile, or electric battery, to construct one for himself in 1800. That enabled him to embark on the researches into electrochemistry by which is chiefly known. In 1807 he tried decomposing caustic soda and caustic potash, hitherto regarded as elements, by electrolysis and obtained the metals sodium and potassium. He went on to discover the metals barium, strontium, calcium and magnesium by the same means. Next, he turned his attention to chlorine, which was then regarded as an oxide in accordance with Lavoisier's theory that oxygen was the essential component of acids; Davy failed to decompose it, however, even with the aid of electricity and concluded that it was an element, thus disproving Lavoisier's view of the nature of acids. In 1812 Davy published his Elements of Chemical Philosophy, in which he presented his chemical ideas without, however, committing himself to the atomic theory, recently advanced by John Dalton.In 1813 Davy engaged Faraday as Assistant, perhaps his greatest service to science. In April 1815 Davy was asked to assist in the development of a miner's lamp which could be safely used in a firedamp (methane) laden atmosphere. The "Davy lamp", which emerged in January 1816, had its flame completely surrounded by a fine wire mesh; George Stephenson's lamp, based on a similar principle, had been introduced into the Northumberland pits several months earlier, and a bitter controversy as to priority of invention ensued, but it was Davy who was awarded the prize for inventing a successful safety lamp.In 1824 Davy was the first to suggest the possibility of conferring cathodic protection to the copper bottoms of naval vessels by the use of sacrificial electrodes. Zinc and iron were found to be equally effective in inhibiting corrosion, although the scheme was later abandoned when it was found that ships protected in this way were rapidly fouled by weeds and barnacles.[br]Principal Honours and DistinctionsKnighted 1812. FRS 1803; President, Royal Society 1820. Royal Society Copley Medal 1805.Bibliography1812, Elements of Chemical Philosophy.1839–40, The Collected Works of Sir Humphry Davy, 9 vols, ed. John Davy, London.Further ReadingJ.Davy, 1836, Memoirs of the Life of Sir Humphry Davy, London (a classic biography). J.A.Paris, 1831, The Life of Sir Humphry Davy, London (a classic biography). H.Hartley, 1967, Humphry Davy, London (a more recent biography).J.Z.Fullmer, 1969, Cambridge, Mass, (a bibliography of Davy's works).ASD -
4 Davy Crockett
m.Davy Crockett, David Crockett. -
5 Davy Jones
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6 Davy-lámpa
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7 percobaan Davy
Davy experiment -
8 Humphrey Davy
m.Humphrey Davy, Sir Humphrey Davy. -
9 lampada di Davy
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10 Hull-Davy charts
графики Халла-Дейви (графики для индексирования линий порошковых рентгенограмм, на которых нанесена зависимость между функцией межплоскостного расстояния угла Брэгга и отношением осей для ряда различных плоскостей кристаллографической решётки)Англо-русский словарь промышленной и научной лексики > Hull-Davy charts
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11 rudarska lampa
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12 Дэви
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13 rudarska lampa
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14 рудничная лампа
Davy lamp имя существительное: -
15 лампа Дэви
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16 лампа Дэви
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17 madenci feneri
davy lamp -
18 denizde ölenlerin kabri
davy jones's locker -
19 denizin dibi
davy jones's locker -
20 duh mora
• Davy Jones
См. также в других словарях:
DAVY (H.) — Le plus grand savant peut être de l’époque romantique, l’Anglais Humphry Davy est certainement l’une des figures les plus fascinantes de l’histoire des sciences. En 1801, moins de cinq ans après avoir lu son premier manuel de chimie, il assurait… … Encyclopédie Universelle
Davy — may refer to: Davy, West Virginia Davy (crater), a crater on the moon Davy (novel), a post apocalyptic science fiction novel by Edgar Pangborn Davy (film), a 1957 British film produced by Basil Dearden Davy (album), a 2009 album by Coconut… … Wikipedia
Davy — wird besonders im Angloamerikanischen Sprachraum als Kurzform des Vornamens David verwendet. Folgende Personen tragen diesen Familiennamen: Chelsy Davy (* 1985), simbabwische Freundin von Prinz Harry von Wales Edmund Davy (1785–1857), irischer… … Deutsch Wikipedia
Davy — [ deɪvɪ], 1) Gloria, amerikanische Sängerin (Sopran), * New York 29. 3. 1931; wurde 1954 durch eine Welttournee als Bess (in »Porgy and Bess« von G. Gershwin) international bekannt. Seitdem trat sie auch in Europa auf, 1958 debütierte sie an … Universal-Lexikon
Davy — (spr. Dehwi), 1) Humphry, geb. 1778 zu Penzance in der Grafschaft Cornwall, lernte die Wundarznei u. Apothekerkunst praktisch, beschäftigte sich bes. mit Chemie u. wurde 1801 Professor dieser Wissenschaft an der Royal Institution in London; 1811… … Pierer's Universal-Lexikon
Davy — Davy, WV U.S. town in West Virginia Population (2000): 373 Housing Units (2000): 170 Land area (2000): 1.291374 sq. miles (3.344643 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 1.291374 sq. miles (3.344643 sq … StarDict's U.S. Gazetteer Places
Davy, WV — U.S. town in West Virginia Population (2000): 373 Housing Units (2000): 170 Land area (2000): 1.291374 sq. miles (3.344643 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 1.291374 sq. miles (3.344643 sq. km)… … StarDict's U.S. Gazetteer Places
davy's — davy s; Davy s; … English syllables
Davy — (spr. dēwĭ), Sir Humphry, Chemiker, geb. 17. Dez. 1778 zu Penzance in Cornwall, gest. 29. Mai 1829 in Genf, war seit 1795 Lehrling bei einem Wundarzt und Apotheker, kam dann als Gehilfe zu Beddoes in Bristol, der ihn 1798 in seiner medizinischen… … Meyers Großes Konversations-Lexikon
Davy — (spr. dehwĭ), Sir Humphry, engl. Chemiker und Physiker, geb. 17. Dez. 1778 in Penzance (Cornwall), 1802 Prof. in London, 1820 27 Präsident der Royal Society, gest. 29. Mai 1829 in Genf; entdeckte 1807 die Alkalimetalle, erwies 1808 die chem.… … Kleines Konversations-Lexikon
Davy — (Däwwi, Dehwi), Sir Humphry, einer der berühmtesten Chemiker, geb. 1778 in der Grafschaft Cornwallis, bildete sich zuerst hauptsächlich durch Selbststudium, später unter Beddoes in Bristol, der ihn in sein Laboratorium aufnahm, ward Lehrer an der … Herders Conversations-Lexikon