-
21 Reichenbach, Georg Friedrich von
SUBJECT AREA: Mechanical, pneumatic and hydraulic engineering, Photography, film and optics, Public utilities[br]b. 24 August 1772 Durlach, Baden, Germanyd. 21 May 1826 Munich, Germany[br]German engineer.[br]While he was attending the Military School at Mannheim, Reichenbach drew attention to himself due to the mathematical instruments that he had designed. On the recommendation of Count Rumford in Munich, the Bavarian government financed a two-year stay in Britain so that Reichenbach could become acquainted with modern mechanical engineering. He returned to Mannheim in 1793, and during the Napoleonic Wars he was involved in the manufacture of arms. In Munich, where he was in the service of the Bavarian state from 1796, he started producing precision instruments in his own time. His basic invention was the design of a dividing machine for circles, produced at the end of the eighteenth century. The astronomic and geodetic instruments he produced excelled all the others for their precision. His telescopes in particular, being perfect in use and of solid construction, soon brought him an international reputation. They were manufactured at the MathematicMechanical Institute, which he had jointly founded with Joseph Utzschneider and Joseph Liebherr in 1804 and which became a renowned training establishment. The glasses and lenses were produced by Joseph Fraunhofer who joined the company in 1807.In the same year he was put in charge of the technical reorganization of the salt-works at Reichenhall. After he had finished the brine-transport line from Reichenhall to Traunstein in 1810, he started on the one from Berchtesgaden to Reichenhall which was an extremely difficult task because of the mountainous area that had to be crossed. As water was the only source of energy available he decided to use water-column engines for pumping the brine in the pipes of both lines. Such devices had been in use for pumping purposes in different mining areas since the middle of the eighteenth century. Reichenbach knew about the one constructed by Joseph Karl Hell in Slovakia, which in principle had just been a simple piston-pump driven by water which did not work satisfactorily. Instead he constructed a really effective double-action water-column engine; this was a short time after Richard Trevithick had constructed a similar machine in England. For the second line he improved the system and built a single-action pump. All the parts of it were made of metal, which made them easy to produce, and the pumps proved to be extremely reliable, working for over 100 years.At the official opening of the line in 1817 the Bavarian king rewarded him generously. He remained in the state's service, becoming head of the department for roads and waterways in 1820, and he contributed to the development of Bavarian industry as well as the public infrastructure in many ways as a result of his mechanical skill and his innovative engineering mind.[br]Further ReadingBauernfeind, "Georg von Reichenbach" Allgemeine deutsche Biographie 27:656–67 (a reliable nineteenth-century account).W.Dyck, 1912, Georg v. Reichenbach, Munich.K.Matschoss, 1941, Grosse Ingenieure, Munich and Berlin, 3rd edn. 121–32 (a concise description of his achievements in the development of optical instruments and engineering).WKBiographical history of technology > Reichenbach, Georg Friedrich von
-
22 таяние
таяние
—
[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
melting
A change of the state of a substance from the solid phase to the liquid phase. Also known as fusion. (Source: MGH)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
EN
DE
FR
Русско-английский словарь нормативно-технической терминологии > таяние
-
23 ухудшение качества пресных вод
ухудшение качества пресных вод
—
[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
freshwater degradation
Pollution immediately or eventually involves the hydrological cycle of the earth, because even pollutants emitted into the air and those present in the soil are washed out by precipitation. Water is considered polluted when it is altered in composition or condition so that it becomes less suitable for any or all of the functions and purposes for which it would be suitable in its natural state. This definition includes changes in the physical, chemical and biological properties of water, or such discharges of liquid, gaseous or solid substances into water as will or are likely to create nuisances or render such water harmful to public health, safety or welfare, or to domestic, commercial, industrial, agricultural, fish or other aquatic life. It also includes changes in temperatures, due to the discharge of hot water. (Source: WPR)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
EN
DE
FR
Русско-английский словарь нормативно-технической терминологии > ухудшение качества пресных вод
- 1
- 2
См. также в других словарях:
Solid-state impact-ionization multiplier — Solid State Impact Ionization Multipliers, or SIM, is a amplifier which amplify small input current signal into large current signal. The application includes Optical Receiver/Detector, Photomultiplier, and Image Sensing.The Advantage of the SIM… … Wikipedia
Solid state relay — A solid state relay (SSR) is an electronic switch, which, unlike an electromechanical relay, contains no moving parts. The types of SSR are photo coupled SSR, transformer coupled SSR, and hybrid SSR. A photo coupled SSR is controlled by a low… … Wikipedia
Solid State Logic — Infobox Company company name = Solid State Logic Ltd company company type = Private limited 05356783cite web|url=http://wck2.companieshouse.gov.uk/bf7c9fe07febfa9fcc6fd72a9a56dabb/companysearch?disp=res frfsh=1152656377#result|title=Companies… … Wikipedia
solid-state diffusion — kietafazė difuzija statusas T sritis radioelektronika atitikmenys: angl. solid state diffusion vok. Festkörperdiffusion, f rus. диффузия из твёрдого источника, f pranc. diffusion en source solide d impureté, f … Radioelektronikos terminų žodynas
Diode-pumped solid-state laser — A frequency doubled green laser pointer, showing internal construction. Cells and electronics lead to a laser head module (see lower diagram) This contains a powerful 808 nm IR diode laser that pumps a Nd:YVO4 laser crystal, that in turn outputs… … Wikipedia
State and Local Affairs — ▪ 1997 Introduction States continued to be at the centre of national debates on public policy during 1996. The U.S. Congress, reacting in part to successful experimentation by a number of states, enacted a historic welfare reform measure… … Universalium
State Trading Organization — Infobox Company company name = State Trading Organization Plc. company company type = Public company slogan = foundation = Malé, Maldives (1964) location = Boduthakurufaanu Magu Malé, Maldives key people = Ahmed Mohamed, CEO num employees = 802… … Wikipedia
amorphous solid — ▪ physics Introduction any noncrystalline solid in which the atoms and molecules are not organized in a definite lattice pattern. Such solids include glass, plastic, and gel. Solids and liquids (liquid) are both forms of condensed… … Universalium
Energon (power source) — In the fictional universe of the Transformers, Energon (pronounced EN ur jon, like energy ) is the primary source of power for Transformers. Using Energon, Transformers live, power their machinery, and even craft weapons. Generation 1/Beast Wars… … Wikipedia
Frank-Read Source — A Frank Read Source is a mechanism explaining the generation of multiple dislocations in specific well spaced slip planes in crystals when they are deformed. It was proposed by and named after Sir Charles Frank and Thornton Read. When a crystal… … Wikipedia
diffusion en source solide d'impureté — kietafazė difuzija statusas T sritis radioelektronika atitikmenys: angl. solid state diffusion vok. Festkörperdiffusion, f rus. диффузия из твёрдого источника, f pranc. diffusion en source solide d impureté, f … Radioelektronikos terminų žodynas
