engineer r&d laboratory

assayer

assistant engineer

assistant engineers

laboratory technician

laboratory technicians

tester

1 technical, expert.

2 technical.

1 technician, technicist, technical expert.

2 repairperson, repairman.

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► adjetivo

1 technical

► nombre masculino,nombre femenino

1 technician, technical expert

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"technical;

Technisch;

tecnico"

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(pl -ci) 1. adj technical

2. m technician

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tecnico agg. technical: per motivi d'ordine tecnico, for technical reasons; scuola tecnica, technical school; termine tecnico, technical term; ufficio tecnico, technical office // (banca) scoperto tecnico, ( di conto corrente) technical overdraft

◆ s.m. technician, engineer, technicist; ( esperto) expert: tecnico pubblicitario, advertising expert; tecnico dell'organizzazione, systems engineer; tecnico della politica, political expert; tecnico aeronautico, qualified aircraft engineer; tecnico del suono, sound engineer; (ind.) tecnico del collaudo, testing engineer; (cinem., tv) tecnico delle luci, light technician.

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1. agg

2. sm/f

(gen) technician, (esperto) expert

- tecnico del suono

- tecnico della televisione

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pl. -ci, - che ['tɛkniko, tʃi, ke] aggettivo technical

sostantivo maschile (f. -a) technician, engineer

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tecnico

pl. -ci, - che /'tεkniko, t∫i, ke/

I aggettivo

 technical; ufficio tecnico (del comune) engineering and design department; consulente tecnico consulting engineer

II sostantivo maschile

 ⇒ 18 (f. -a) technician, engineer; i -ci the technical staff, the technicians

COMPOUNDS

tecnico di laboratorio laboratory technician; tecnico delle luci lighting engineer; tecnico del suono audio-engineer.

SUBJECT AREA: Broadcasting, Electronics and information technology, Telecommunications

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Kompfner obtained a degree in engineering from the Vienna Technische Hochschule in 1931 and qualified as a Diplom-Ingenieur in Architecture two years later. The following year, with a worsening political situation in Austria, he moved to England and became an architectural apprentice. In 1936 he became Managing Director of a building firm owned by a relative, but at the same time he was avidly studying physics and electronics. His first patent, for a television pick-up device, was filed in 1935 and granted in 1937, but was not in fact taken up. In June 1940 he was interned on the Isle of Man, but as a result of a paper previously sent by him to the Editor of Wireless Engineer he was released the following December and sent to join the group at Birmingham University working on centimetric radar. There he worked on klystrons, with little success, but as a result of the experience gained he eventually invented the travelling-wave tube (TWT), which was based on a helical transmission line. After disbandment of the Birmingham team, in 1946 Kompfner moved to the Clarendon Laboratory at Oxford and in 1947 he became a British subject. At the Clarendon Laboratory he met J.R. Pierce of Bell Laboratories, who worked out the theory of operation of the TWT. After gaining his DPhil at Oxford in 1951, Kompfner accepted a post as Principal Scientific Officer at Signals Electronic Research Laboratories, Baldock, but very soon after that he was invited by Pierce to work at Bell on microwave tubes. There, in 1952, he invented the backward-wave oscillator (BWO). He was appointed Director of Electronics Research in 1955 and Director of Communications Research in 1962, having become a US citizen in 1957. In 1958, with Pierce, he designed Echo 1, the first (passive) satellite, which was launched in August 1960. He was also involved with the development of Telstar, the first active communications satellite, which was launched in 1962. Following his retirement from Bell in 1973, he continued to pursue research, alternately at Stanford, California, and Oxford, England.

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SUBJECT AREA: Ports and shipping

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Sir Alexander Kennedy was trained as a marine engineer. The son of a Congregational minister, he was educated at the City of London School and the School of Mines, Jermyn Street. He was then apprenticed to J. \& W.Dudgeon of Millwall, marine engineers, and went on to become a draughtsman to Sir Charles Marsh Palmer of Jarrow (with whom he took part in the development of the compound steam-engine for marine use) and T.M.Tennant \& Co. of Leith. In 1874 he was appointed Professor of Engineering at University College, London. He built up an influential School of Engineering, being the first in England to integrate laboratory work as a regular feature of instruction. The engineering laboratory that he established in 1878 has been described as "the first of its kind in England" (Proceedings of the Institution of Civil Engineers). He and his students conducted important experiments on the strength and elasticity of materials, boiler testing and related subjects. He followed the teaching of Franz Reuleaux, whose Kinematics of Machinery he translated from the German.

While thus breaking new educational ground at University College, Kennedy concurrently established a very thriving private practice as a consulting engineer in partnership with Bernard Maxwell Jenkin (the son of Fleeming Jenkin), to pursue which he relinquished his academic posts in 1889. He planned and installed the whole electricity system for the Westminster Electric Supply Corporation, and other electricity companies. He was also heavily involved in the development of electrically powered transport systems. During the First World War he served on a panel of the Munitions Invention Department, and after the war he undertook to record photographically the scenes of desolation in his book From Ypres to Verdun (1921). Towards the end of his life, he pursued his interest in archaeology with the exploration of Petra, recorded in a monograph: Petra. Its History and Monuments (1925). He also joined the Institution of Mechanical Engineers in 1879, becoming the President of that body in 1894, and he joined the Institution of Electrical Engineers in 1890. Kennedy was thus something of an engineering polymath, as well as being an outstanding engineering educationalist.

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SUBJECT AREA: Broadcasting, Electronics and information technology, Recording, Telecommunications

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From an early age he was absorbed by phenomena of physics to the exclusion of all other subjects, including mathematics. When choosing his subjects for the final three years in Borgedydskolen in Christianshavn (Copenhagen) before university, he opted for languages and history. At the University of Copenhagen he embarked on the study of medicine in 1889, but broke it off and was apprenticed to the machine firm of A/S Frichs Eftf. in Aarhus. He was employed between 1893 and 1899 as a mechanic and assistant in the laboratory of the Copenhagen Telephone Company KTAS. Eventually he advanced to be Head of the line fault department. This suited his desire for experiment and measurement perfectly. After the invention of the telegraphone in 1898, he left the laboratory and with responsible business people he created Aktieselskabet Telegrafonen, Patent Poulsen in order to develop it further, together with Peder Oluf Pedersen (1874– 1941). Pedersen brought with him the mathematical background which eventually led to his professorship in electronic engineering in 1922.

The telegraphone was the basis for multinational industrial endeavours after it was demonstrated at the 1900 World's Exhibition in Paris. It must be said that its strength was also its weakness, because the telegraphone was unique in bringing sound recording and reproduction to the telephone field, but the lack of electronic amplifiers delayed its use outside this and the dictation fields (where headphones could be used) until the 1920s. However, commercial interest was great enough to provoke a number of court cases concerning patent infringement, in which Poulsen frequently figured as a witness.

In 1903–4 Poulsen and Pedersen developed the arc generator for continuous radio waves which was used worldwide for radio transmitters in competition with Marconi's spark-generating system. The inspiration for this work came from the research by William Duddell on the musical arc. Whereas Duddell had proposed the use of the oscillations generated in his electric arc for telegraphy in his 1901 UK patent, Poulsen contributed a chamber of hydrogen and a transverse magnetic field which increased the efficiency remarkably. He filed patent applications on these constructions from 1902 and the first publication in a scientific forum took place at the International Electrical Congress in St Louis, Missouri, in 1904.

In order to use continuous waves efficiently (the high frequency constituted a carrier), Poulsen developed both a modulator for telegraphy and a detector for the carrier wave. The modulator was such that even the more primitive spark-communication receivers could be used. Later Poulsen and Pedersen developed frequency-shift keying.

The Amalgamated Radio-Telegraph Company Ltd was launched in London in 1906, combining the developments of Poulsen and those of De Forest Wireless Telegraph Syndicate. Poulsen contributed his English and American patents. When this company was liquidated in 1908, its assets were taken over by Det Kontinentale Syndikat for Poulsen Radio Telegrafi, A/S in Copenhagen (liquidated 1930–1). Some of the patents had been sold to C.Lorenz AG in Berlin, which was very active.

The arc transmitting system was in use worldwide from about 1910 to 1925, and the power increased from 12 kW to 1,000 kW. In 1921 an exceptional transmitter rated at 1,800 kW was erected on Java for communications with the Netherlands. More than one thousand installations had been in use worldwide. The competing systems were initially spark transmitters (Marconi) and later rotary converters ( Westinghouse). Similar power was available from valve transmitters only much later.

From c. 1912 Poulsen did not contribute actively to further development. He led a life as a well-respected engineer and scientist and served on several committees. He had his private laboratory and made experiments in the composition of matter and certain resonance phenomena; however, nothing was published. It has recently been suggested that Poulsen could not have been unaware of Oberlin Smith's work and publication in 1888, but his extreme honesty in technical matters indicates that his development was indeed independent. In the case of the arc generator, Poulsen was always extremely frank about the inspiration he gained from earlier developers' work.

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SUBJECT AREA: Electronics and information technology

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Following education at Stockport Grammar School, Williams entered Manchester University in 1929, gaining his BSc in 1932 and MSc in 1933. After a short time as a college apprentice with Metropolitan Vickers, he went to Magdalen College, Oxford, to study for a DPhil, which he was awarded in 1936. He returned to Manchester University that year as an assistant lecturer, gaining his DSc in 1939. Following the outbreak of the Second World War he worked for the Scientific Civil Service, initially at the Bawdsey Research Station and then at the Telecommunications Research Establishment at Malvern, Worcestershire. There he was involved in research on non-incandescent amplifiers and diode rectifiers and the development of the first practical radar system capable of identifying friendly aircraft. Later in the war, he devised an automatic radar system suitable for use by fighter aircraft.

After the war he resumed his academic career at Manchester, becoming Professor of Electrical Engineering and Director of the University Electrotechnical Laboratory in 1946. In the same year he succeeded in developing a data-memory device based on the cathode ray tube, in which the information was stored and read by electron-beam scanning of a charge-retaining target. The Williams storage tube, as it became known, not only found obvious later use as a means of storing single-frame, still television images but proved to be a vital component of the pioneering Manchester University MkI digital computer. Because it enabled both data and program instructions to be stored in the computer, it was soon used worldwide in the development of the early stored-program computers.

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1) General subject: demonstrator, laboratory assistance, laboratory assistant, paramedic, technician, tester, laboratory aide, departmental assistant

2) Medicine: laboratorian, laboratory technician, lab tech, lab technician

3) Military: paramedic (и т.п.)

4) Engineering: assistant chemist

5) Chemistry: analyst

6) Mathematics: keeper

7) Metallurgy: assayer

8) Advertising: assistant engineer

9) Aviation medicine: laboratory worker

10) Makarov: operator, test

11) oil&gas: lab assistant

m, Chemielaborantin f (chemical) laboratory ( oder lab umg.) assistant ( oder technician)

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m(f) laboratory chemist

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Chemielaborant m, Chemielaborantin f (chemical) laboratory ( oder lab umg) assistant ( oder technician) Chemieingenieur m, Chemieingenieurin f chemical engineer

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SUBJECT AREA: Metallurgy

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His family emigrated to Australia when he was 5 years old. He was educated at Wesley College, Melbourne, and attended Queen's College, University of Melbourne, graduating in physics and engineering in 1897. As an 1851 Exhibitioner he then spent three years at St John's College, Cambridge, under Sir Alfred Ewing, where he studied the microstructure of deformed metal crystals and abandoned his original intention of becoming a civil engineer. Rosenhain was the first to observe the slip-bands in metal crystals, and in the Bakerian Lecture delivered jointly by Ewing and Rosenhain to the Royal Society in 1899 it was shown that metals deformed plastically by a mechanism involving shear slip along individual crystal planes. From this conception modern ideas on the plasticity and recrystallization of metals rapidly developed. On leaving Cambridge, Rosenhain joined the Birmingham firm of Chance Brothers, where he worked for six years on optical glass and lighthouse-lens systems. A book, Glass Manufacture, written in 1908, derives from this period, during which he continued his metallurgical researches in the evenings in his home laboratory and published several papers on his work.

In 1906 Rosenhain was appointed Head of the Metallurgical Department of the National Physical Laboratory (NPL), and in 1908 he became the first Superintendent of the new Department of Metallurgy and Metallurgical Chemistry. Many of the techniques he introduced at Teddington were described in his Introduction to Physical Metallurgy, published in 1914. At the outbreak of the First World War, Rosenhain was asked to undertake work in his department on the manufacture of optical glass. This soon made it possible to manufacture optical glass of high quality on an industrial scale in Britain. Much valuable work on refractory materials stemmed from this venture. Rosenhain's early years at the NPL were, however, inseparably linked with his work on light alloys, which between 1912 and the end of the war involved virtually all of the metallurgical staff of the laboratory. The most important end product was the well-known "Y" Alloy (4% copper, 2% nickel and 1.5% magnesium) extensively used for the pistons and cylinder heads of aircraft engines. It was the prototype of the RR series of alloys jointly developed by Rolls Royce and High Duty Alloys. An improved zinc-based die-casting alloy devised by Rosenhain was also used during the war on a large scale for the production of shell fuses.

After the First World War, much attention was devoted to beryllium, which because of its strength, lightness, and stiffness would, it was hoped, become the airframe material of the future. It remained, however, too brittle for practical use. Other investigations dealt with impurities in copper, gases in aluminium alloys, dental alloys, and the constitution of alloys. During this period, Rosenhain's laboratory became internationally known as a centre of excellence for the determination of accurate equilibrium diagrams.

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m, Chemotechnikerin f laboratory ( oder lab umg.) technician

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m(f) chemical engineer

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Chemotechniker m, Chemotechnikerin f laboratory ( oder lab umg) technician

m, Chemieingenieurin f chemical engineer

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m(f) chemical engineer

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Chemielaborant m, Chemielaborantin f (chemical) laboratory ( oder lab umg) assistant ( oder technician) Chemieingenieur m, Chemieingenieurin f chemical engineer

SUBJECT AREA: Mechanical, pneumatic and hydraulic engineering

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From 1868 to 1896 George Alden was head of the steam and mechanical engineering departments at the Worcester Polytechnic Institute, Worcester, Massachusetts. He made a donation in 1910 to establish a hydraulic laboratory at the Institute, and later a further donation for an extension of the laboratory which was completed in 1925. He was Chairman of the Board of Norton (Abrasives) Company and made a significant contribution to the theory of grinding in his paper in 1914 to the American Society of Mechanical Engineers. He was a member of that society from 1880, the year of its foundation, and took an active part in its proceedings.

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SUBJECT AREA: Electricity, Telecommunications

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After graduating from University College, London, Ayrton became for a short time a pupil of Sir William Thomson in Glasgow. For five years he was employed in the Indian Telegraph Service, eventually as Superintendent, where he assisted in revolutionizing the system, devising methods of fault detection and elimination. In 1873 he was invited by the Japanese Government to assist as Professor of Physics and Telegraphy in founding the Imperial College of Engineering in Tokyo. There he created a teaching laboratory that served as a model for those he was later to organize in England and which were copied elsewhere. It was in Tokyo that his joint researches with Professor John Perry began, an association that continued after their return to England. In 1879 he became Professor of Technical Physics at the City and Guilds Institute in Finsbury, London, and later was appointed Professor of Physics at the Central Institution in South Kensington.

The inventions of Avrton and Perrv included an electric tricycle in 1882, the first practicable portable ammeter and other electrical measuring instruments. By 1890, when the research partnership ended, they had published nearly seventy papers in their joint names, the emphasis being on a mathematical treatment of subjects including electric motor design, construction of electrical measuring instruments, thermodynamics and the economical use of electric conductors. Ayrton was then employed as a consulting engineer by government departments and acted as an expert witness in many important patent cases.

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SUBJECT AREA: Electricity, Electronics and information technology, Public utilities

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After attending Owens College, Manchester, Hopkinson was admitted to Trinity College, Cambridge, in 1867 to read for the Mathematical Tripos. An appointment in 1872 with the lighthouse department of the Chance Optical Works in Birmingham directed his attention to electrical engineering. His most noteworthy contribution to lighthouse engineering was an optical system to produce flashing lights that distinguished between individual beacons. His extensive researches on the dielectric properties of glass were recognized when he was elected to a Fellowship of the Royal Society at the age of 29. Moving to London in 1877 he became established as a consulting engineer at a time when electricity supply was about to begin on a commercial scale. During the remainder of his life, Hopkinson's researches resulted in fundamental contributions to electrical engineering practice, dynamo design and alternating current machine theory. In making a critical study of the Edison dynamo he developed the principle of the magnetic circuit, a concept also arrived at by Gisbert Kapp around the same time. Hopkinson's improvement of the Edison dynamo by reducing the length of the field magnets almost doubled its output. In 1890, in addition to-his consulting practice, Hopkinson accepted a post as the first Professor of Electrical Engineering and Head of the Siemens laboratory recently established at King's College, London. Although he was not involved in lecturing, the position gave him the necessary facilities and staff and student assistance to continue his researches. Hopkinson was consulted on many proposals for electric traction and electricity supply, including schemes in London, Manchester, Liverpool and Leeds. He also advised Mather and Platt when they were acting as contractors for the locomotives and generating plant for the City and South London tube railway. As early as 1882 he considered that an ideal method of charging for the supply of electricity should be based on a two-part tariff, with a charge related to maximum demand together with a charge for energy supplied. Hopkinson was one the foremost expert witnesses of his day in patent actions and was himself the patentee of over forty inventions, of which the three-wire system of distribution and the series-parallel connection of traction motors were his most successful. Jointly with his brother Edward, John Hopkinson communicated the outcome of his investigations to the Royal Society in a paper entitled "Dynamo Electric Machinery" in 1886. In this he also described the later widely used "back to back" test for determining the characteristics of two identical machines. His interest in electrical machines led him to more fundamental research on magnetic materials, including the phenomenon of recalescence and the disappearance of magnetism at a well-defined temperature. For his work on the magnetic properties of iron, in 1890 he was awarded the Royal Society Royal Medal. He was a member of the Alpine Club and a pioneer of rock climbing in Britain; he died, together with three of his children, in a climbing accident.

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f <V&M> research department

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