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21 Reason, Richard Edmund
SUBJECT AREA: Mechanical, pneumatic and hydraulic engineering[br]b. 21 December 1903 Exeter, Devon, Englandd. 20 March 1987 Great Bowden, Leicestershire, England[br]English metrologist who developed instruments for measuring machined-surface roughness.[br]Richard Edmund Reason was educated at Tonbridge School and the Royal College of Science (Imperial College), where he studied under Professor A.F.C.Pollard, Professor of Technical Optics. After graduating in 1925 he joined Taylor, Taylor and Hobson Ltd, Leicester, manufacturers of optical, electrical and scientific instruments, and remained with that firm throughout his career. One of his first contributions was in the development, with E.F.Fincham, of the Fincham Coincidence Optometer. At this time the firm, under William Taylor, was mainly concerned with optical instruments and lens manufacture, but in the 1930s Reason was also engaged in developing means for measuring the roughness of machined surfaces. The need for establishing standards and methods of measurement of surface finish was called for when the subcontracting of aero-engine components became necessary during the Second World War. This led to the development by Reason of an instrument in which a stylus was moved across the surface and the profile recorded electronically. This was called the Talysurf and was first produced in 1941. Further development followed, and from 1947 Reason tackled the problem of measuring roundness, producing the first Talyrond machine in 1949. The technology developed for these instruments was used in the production of others such as the Talymin Comparator and the Talyvel electronic level. Reason was also associated with the development of optical projection systems to measure the profile of parts such as gear teeth, screw threads and turbine blades. He retired in 1968 but continued as a consultant to the company. He served for many years on committees of the British Standards Institution on surface metrology and was a representative of Britain at the International Standards Organization.[br]Principal Honours and DistinctionsOBE 1967. FRS 1971. Honorary DSc University of Birmingham 1969. Honorary DSc Leicester University 1971.Further ReadingD.J.Whitehouse, 1990, Biographical Memoirs of Fellows of the Royal Society 36, London, pp. 437–62 (an illustrated obituary notice listing Reason's eighty-nine British patents, published between 1930 and 1972, and his twenty-one publications, dating from 1937 to 1966).K.J.Hume, 1980, A History of Engineering Metrology, London, 113–21 (contains a shorter account of Reason's work).RTS -
22 RCS
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23 RCS
система дистанционного управления войска связи ( Великобритания) Королевский колледж науки ( Великобритания) -
24 Lanchester, Frederick William
[br]b. 28 October 1868 Lewisham, London, Englandd. 8 March 1946 Birmingham, England[br]English designer and builder of the first all-British motor car.[br]The fourth of eight children of an architect, he spent his childhood in Hove and attended a private preparatory school, from where, aged 14, he went to the Hartley Institution (the forerunner of Southampton University). He was then granted a scholarship to the Royal College of Science, South Kensington, and also studied practical engineering at Finsbury Technical College, London. He worked first for a draughtsman and pseudo-patent agent, and was then appointed Assistant Works Manager of the Forward Gas Engine Company of Birmingham, with sixty men and a salary of £1 per week. He was then aged 21. His younger brother, George, was apprenticed to the same company. In 1889 and 1890 he invented a pendulum governor and an engine starter which earned him royalties. He built a flat-bottomed river craft with a stern paddle-wheel and a vertical single-cylinder engine with a wick carburettor of his own design. From 1892 he performed a number of garden experiments on model gliders relating to problems of lift and drag, which led him to postulate vortices from the wingtips trailing behind, much of his work lying behind the theory of modern aerodynamics. The need to develop a light engine for aircraft led him to car design.In February 1896 his first experimental car took the road. It had a torsionally rigid chassis, a perfectly balanced and almost noiseless engine, dynamically stable steering, epicyclic gear for low speed and reverse with direct drive for high speed. It turned out to be underpowered and was therefore redesigned. Two years later an 8 hp, two-cylinder flat twin appeared which retained the principle of balancing by reverse rotation, had new Lanchester valve-gear and a new method of ignition based on a magneto generator. For the first time a worm and wheel replaced chain-drive or bevel-gear transmission. Lanchester also designed the machinery to make it. The car was capable of about 18 mph (29 km/h): future cars of his travelled at twice that speed. From 1899 to 1904 cars were produced for sale by the Lanchester Engine Company, which was formed in 1898. The company had to make every component except the tyres. Lanchester gave up the managership but remained as Chief Designer, and he remained in this post until 1914.In 1907–8 his two-volume treatise Aerial Flight was published; it included consideration of skin friction, boundary-layer theory and the theory of stability. In 1909 he was appointed to the Government's Committee for Aeronautics and also became a consultant to the Daimler Company. At the age of 51 he married Dorothea Cooper. He remained a consultant to Daimler and worked also for Wolseley and Beardmore until 1929 when he started Lanchester Laboratories, working on sound reproduction. He also wrote books on relativity and on the theory of dimensions.[br]Principal Honours and DistinctionsFRS.Bibliographybht=1907–8, Aerial Flight, 2 vols.Further ReadingP.W.Kingsford, 1966, F.W.Lanchester, Automobile Engineer.E.G.Semler (ed.), 1966, The Great Masters. Engineering Heritage, Vol. II, London: Institution of Mechanical Engineers/Heinemann.IMcNBiographical history of technology > Lanchester, Frederick William
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25 A.R.C.S.
Сокращение: Associate of the Royal College of Science -
26 ARCS
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27 ARCS
forkortelse for Associate of the Royal College of Science -
28 Shoenberg, Isaac
[br]b. 1 March 1880 Kiev, Ukrained. 25 January 1963 Willesden, London, England[br]Russian engineer and friend of Vladimir Zworykin; Director of Research at EMI, responsible for creating the team that successfully developed the world's first all-electronic television system.[br]After his initial engineering education at Kiev Polytechnic, Shoenberg went to London to undertake further studies at the Royal College of Science. In 1905 he returned to Russia and rose to become Chief Engineer of the Russian Wireless Telegraphy Company. He then returned to England, where he was a consultant in charge of the Patent Department and then joint General Manager of the Marconi Wireless Telegraphy Company (see Marconi). In 1929 he joined the Columbia Graphophone Company, but two years later this amalgamated with the Gramophone Company, by then known as His Master's voice (HMV), to form EMI (Electric and Musical Industries), a company in which the Radio Corporation of America (RCA) had a significant shareholding. Appointed Director of the new company's Research Laboratories in 1931, Shoenberg gathered together a team of highly skilled engineers, including Blumlein, Browne, Willans, McGee, Lubszynski, Broadway and White, with the objective of producing an all-electronic television system suitable for public broadcasting. A 150-line system had already been demonstrated using film as the source material; a photoemissive camera tube similar to Zworykin's iconoscope soon followed. With alternate demonstrations of the EMI system and the mechanical system of Baird arranged with the object of selecting a broadcast system for the UK, Shoenberg took the bold decision to aim for a 405-line "high-definition" standard, using interlaced scanning based on an RCA patent and further developed by Blumlein. This was so successful that it was formally adopted as the British standard in 1935 and regular broadcasts, the first in the world, began in 1937. It is a tribute to Shoenberg's vision and the skills of his team that this standard was to remain in use, apart from the war years, until finally superseded in 1985.[br]Principal Honours and DistinctionsKnighted 1954. Institution of Electrical Engineers Faraday Medal 1954.Further ReadingA.D.Blumlein et al., 1938, "The Marconi-EMI television system", Journal of the Institution of Electrical Engineers 83:729 (provides a description of the development of the 405-line system).For more background information, see Proceedings of the International Conference on the History of Television. From Early Days to the Present, November 1986, Institution of Electrical Engineers Publication No. 271.KF -
29 Clerk, Sir Dugald
[br]b. 31 March 1854 Glasgow, Scotlandd. 12 November 1932 Ewhurst, Surrey, England[br]Scottish mechanical engineer, inventor of the two-stroke internal combustion engine.[br]Clerk began his engineering training at about the age of 15 in the drawing office of H.O.Robinson \& Company, Glasgow, and in his father's works. Meanwhile, he studied at the West of Scotland Technical College and then, from 1871 to 1876, at Anderson's College, Glasgow, and at the Yorkshire College of Science, Leeds. Here he worked under and then became assistant to the distinguished chemist T.E.Thorpe, who set him to work on the fractional distillation of petroleum, which was to be useful to him in his later work. At that time he had intended to become a chemical engineer, but seeing a Lenoir gas engine at work, after his return to Glasgow, turned his main interest to gas and other internal combustion engines. He pursued his investigations first at Thomson, Sterne \& Company (1877–85) and then at Tangyes of Birmingham (1886–88. In 1888 he began a lifelong partnership in Marks and Clerk, consulting engineers and patent agents, in London.Beginning his work on gas engines in 1876, he achieved two patents in the two following years. In 1878 he made his principal invention, patented in 1881, of an engine working on the two-stroke cycle, in which the piston is powered during each revolution of the crankshaft, instead of alternate revolutions as in the Otto four-stroke cycle. In this engine, Clerk introduced supercharging, or increasing the pressure of the air intake. Many engines of the Clerk type were made but their popularity waned after the patent for the Otto engine expired in 1890. Interest was later revived, particularly for application to large gas engines, but Clerk's engine eventually came into its own where simple, low-power motors are needed, such as in motor cycles or motor mowers.Clerk's work on the theory and design of gas engines bore fruit in the book The Gas Engine (1886), republished with an extended text in 1909 as The Gas, Petrol and Oil Engine; these and a number of papers in scientific journals won him international renown. During and after the First World War, Clerk widened the scope of his interests and served, often as chairman, on many bodies in the field of science and industry.[br]Principal Honours and DistinctionsKnighted 1917; FRS 1908; Royal Society Royal Medal 1924; Royal Society of Arts Alber Medal 1922.Further ReadingObituary Notices of Fellows of the Royal Society, no. 2, 1933.LRD -
30 Guest, James John
SUBJECT AREA: Mechanical, pneumatic and hydraulic engineering[br]b. 24 July 1866 Handsworth, Birmingham, Englandd. 11 June 1956 Virginia Water, Surrey, England[br]English mechanical engineer, engineering teacher and researcher.[br]James John Guest was educated at Marlborough in 1880–4 and at Trinity College, Cambridge, graduating as fifth wrangler in 1888. He received practical training in several workshops and spent two years in postgraduate work at the Engineering Department of Cambridge University. After working as a draughtsman in the machine-tool, hydraulic and crane departments of Tangyes Ltd at Birmingham, he was appointed in 1896 Assistant Professor of Engineering at McGill University in Canada. After a short time he moved to the Polytechnic Institute at Worcester, Massachusetts, where he was for three years Professor of Mechanical Engineering and Head of the Engineering Department. In 1899 he returned to Britain and set up as a consulting engineer in Birmingham, being a partner in James J.Guest \& Co. For the next fifteen years he combined this work with research on grinding phenomena. He also developed a theory of grinding which he first published in a paper at the British Association for the Advancement of Science in 1914 and elaborated in a paper to the Institution of Mechanical Engineers and in his book Grinding Machinery (1915). During the First World War, in 1916–17, he was in charge of inspection in the Staffordshire and Shropshire Area, Ministry of Munitions. In 1917 he returned to teaching as Reader in Graphics and Structural Engineering at University College London. His final appointment was about 1923 as Professor of Mechanical and Electrical Engineering, Artillery College, Woolwich, which later became the Military College of Science.He carried out research on the strength of materials and contributed many articles on the subject to the technical press. He originated Guest's Law for a criterion of failure of materials under combined stresses, first published in 1900. He was a Member of the Institution of Mechanical Engineers in 1900–6 and from 1919 and contributed to their proceedings in many discussions and two major papers.[br]BibliographyOf many publications by Guest, the most important are: 1900, "Ductile materials under combined stress", Proceedings of the Physical Society 17:202.1915, Grinding Machinery, London.1915, "Theory of grinding, with reference to the selection of speeds in plain and internal work", Proceedings of the Institution of Mechanical Engineers 89:543.1917. "Torsional hysteresis of mild steel", Proceedings of the Royal Society A93:313.1918. with F.C.Lea, "Curved beams", Proceedings of the Royal Society A95:1. 1930, "Effects of rapidly acting stress", Proceedings of the Institution of MechanicalEngineers 119:1,273.RTS -
31 RMCS
1) Военный термин: Range Monitoring Control System, Royal Military College of Science3) Сокращение: Royal Military College of Science (UK) -
32 Abel, Sir Frederick August
[br]b. 17 July 1827 Woolwich, London, Englandd. 6 September 1902 Westminster, London, England[br]English chemist, co-inventor of cordite find explosives expert.[br]His family came from Germany and he was the son of a music master. He first became interested in science at the age of 14, when visiting his mineralogist uncle in Hamburg, and studied chemistry at the Royal Polytechnic Institution in London. In 1845 he became one of the twenty-six founding students, under A.W.von Hofmann, of the Royal College of Chemistry. Such was his aptitude for the subject that within two years he became von Hermann's assistant and demonstrator. In 1851 Abel was appointed Lecturer in Chemistry, succeeding Michael Faraday, at the Royal Military Academy, Woolwich, and it was while there that he wrote his Handbook of Chemistry, which was co-authored by his assistant, Charles Bloxam.Abel's four years at the Royal Military Academy served to foster his interest in explosives, but it was during his thirty-four years, beginning in 1854, as Ordnance Chemist at the Royal Arsenal and at Woolwich that he consolidated and developed his reputation as one of the international leaders in his field. In 1860 he was elected a Fellow of the Royal Society, but it was his studies during the 1870s into the chemical changes that occur during explosions, and which were the subject of numerous papers, that formed the backbone of his work. It was he who established the means of storing gun-cotton without the danger of spontaneous explosion, but he also developed devices (the Abel Open Test and Close Test) for measuring the flashpoint of petroleum. He also became interested in metal alloys, carrying out much useful work on their composition. A further avenue of research occurred in 1881 when he was appointed a member of the Royal Commission set up to investigate safety in mines after the explosion that year in the Sealham Colliery. His resultant study on dangerous dusts did much to further understanding on the use of explosives underground and to improve the safety record of the coal-mining industry. The achievement for which he is most remembered, however, came in 1889, when, in conjunction with Sir James Dewar, he invented cordite. This stable explosive, made of wood fibre, nitric acid and glycerine, had the vital advantage of being a "smokeless powder", which meant that, unlike the traditional ammunition propellant, gunpowder ("black powder"), the firer's position was not given away when the weapon was discharged. Although much of the preliminary work had been done by the Frenchman Paul Vieille, it was Abel who perfected it, with the result that cordite quickly became the British Army's standard explosive.Abel married, and was widowed, twice. He had no children, but died heaped in both scientific honours and those from a grateful country.[br]Principal Honours and DistinctionsGrand Commander of the Royal Victorian Order 1901. Knight Commander of the Most Honourable Order of the Bath 1891 (Commander 1877). Knighted 1883. Created Baronet 1893. FRS 1860. President, Chemical Society 1875–7. President, Institute of Chemistry 1881–2. President, Institute of Electrical Engineers 1883. President, Iron and Steel Institute 1891. Chairman, Society of Arts 1883–4. Telford Medal 1878, Royal Society Royal Medal 1887, Albert Medal (Society of Arts) 1891, Bessemer Gold Medal 1897. Hon. DCL (Oxon.) 1883, Hon. DSc (Cantab.) 1888.Bibliography1854, with C.L.Bloxam, Handbook of Chemistry: Theoretical, Practical and Technical, London: John Churchill; 2nd edn 1858.Besides writing numerous scientific papers, he also contributed several articles to The Encyclopaedia Britannica, 1875–89, 9th edn.Further ReadingDictionary of National Biography, 1912, Vol. 1, Suppl. 2, London: Smith, Elder.CMBiographical history of technology > Abel, Sir Frederick August
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33 Crookes, Sir William
SUBJECT AREA: Electricity[br]b. 17 June 1832 London, Englandd. 4 April 1919 London, England[br]English chemist and physicist who carried out studies of electrical discharges and cathode rays in rarefied gases, leading to the development of the cathode ray tube; discoverer of the element thallium and the principle of the Crookes radiometer.[br]Crookes entered the Royal College of Chemistry at the age of 15, and from 1850 to 1854 held the appointment of Assistant at the college. In 1854 he became Superintendent of the Meteorological Department at the Radcliffe Observatory in Oxford. He moved to a post at the College of Science in Chester the following year. Soon after this he inherited a large fortune and set up his own private laboratory in London. There he studied the nature of electrical discharges in gases at low pressure and discovered the dark space (later named after him) that surrounds the negative electrode, or cathode. He also established that the rays produced in the process (subsequently shown by J.J.Thompson to be a stream of electrons) not only travelled in straight lines, but were also capable of producing heat and/or light upon impact with suitable anode materials. Using a variety of new methods to investigate these "cathode" rays, he applied them to the spectral analysis of compounds of selenium and, as a result, in 1861 he discovered the element thallium, finally establishing its atomic weight in 1873. Following his discovery of thallium, he became involved in two main lines of research: the properties of rarified gases, and the investigation of the elements of the "rare earths". It was also during these experiments that he discovered the principle of the Crookes radiometer, a device in which light is converted into rotational motion and which used to be found frequently in the shop windows of English opticians. Also among the fruits of this work were the Crookes tubes and the development of spectacle lenses with differential ranges of radiational absorption. In the 1870s he became interested in spiritualism and acquired a reputation for his studies of psychic phenomena, but at the turn of the century he returned to traditional scientific investigations. In 1892 he wrote about the possibility of wireless telegraphy. His work in the field of radioactivity led to the invention of the spinthariscope, an early type of detector of alpha particles. In 1900 he undertook investigations into uranium which led to the study of scintillation, an important tool in the study of radioactivity.While the theoretical basis of his work has not stood the test of time, his material discoveries, observations and investigations of new facts formed a basis on which others such as J.J. Thomson were to develop subatomic theory. His later involvement in the investigation of spiritualism led to much criticism, but could be justified on the basis of a belief in the duty to investigate all phenomena.[br]Principal Honours and DistinctionsKnighted 1897. Order of Merit 1910. FRS 1863. President, Royal Society 1913–15. Honorary LLD Birmingham. Honorary DSc Oxon, Cambridge, Sheffield, Durham, Ireland and Cape of Good Hope.Bibliography1874, On Attraction and Repulsion Resulting from Radiation.1874, "Researches in the phenomenon of spiritualism", Society of Metaphysics; reprinted in facsimile, 1986.For many years he was also Proprietor and Editor of Chemical News.Further ReadingE.E.Fournier D'Albe, 1923, Life of Sir William Crookes. Who Was Who II, 1916–28, London: A. \& C. Black. T.I.Williams, 1969, A Biographical Dictionary of Scientists. See also Braun, Karl Ferdinand.KF / MG -
34 Cruickshank, William
SUBJECT AREA: Electricity[br]d. 1810/11 Scotland[br]Scottish chemist and surgeon, inventor of a trough battery developed from Volta's pile.[br]Cruickshank graduated MA from King's College, Aberdeen, in 1765, and later gained a Diploma of the Royal College of Surgeons. When chemistry was introduced in 1788 into the course at the Royal Military Academy in Woolwich, Cruickshank became a member of staff, serving as Assistant to Dr A.Crawford, the Lecturer in Chemistry. Upon Crawford's death in 1796 Cruickshank succeeded him as Lecturer and held the post until his retirement due to ill health in 1804. He also held the senior posts of Chemist to the Ordnance at Woolwich and Surgeon to the Ordnance Medical Department. He should not be confused with William Cumberland Cruickshank (1745–1800), who was also a surgeon and Fellow of the Royal Society. In 1801, shortly after Volta's announcement of his pile, Cruickshank built a voltaic pile to facilitate his experiments in electrochemistry. The pile had zinc and silver plates about 1½ in2 (10 cm2) with interposed papers moistened with ammonium chloride. Dissatisfied with this arrangement, Cruickshank devised a horizontal trough battery in which a wooden box was divided into cells, each holding a pair of zinc and silver or zinc and copper plates. Charged with a dilute solution of ammonium chloride, the battery, which was typically of sixty cells, was found to be more convenient to use than a pile and it, or a derivative, was generally adopted for electrochemical experiments including tose of Humphrey Davy during the early years of the nineteenth century.[br]Principal Honours and DistinctionsFRS 1802.Bibliography1801, article in Nicholsons Journal 4:187–91 (describes Cruickshank's original pile). 1801, article in Nicholsons Journal 4:245–64 (describes his trough battery).Further ReadingB.Bowers, 1982, A History of Electric Light and Power, London (a short account). A.Courts, 1959, "William Cruickshank", Annals of Science 15:121–33 GW -
35 Laithwaite, Eric Roberts
[br]b. 14 June 1921 Atherton, Lancashire, England[br]English engineer, notable contributor to the development of linear electric motors.[br]Laithwaite's education at Kirkham Grammar School and Regent Street Polytechnic, London, was followed by service in the Royal Air Force. After entering Manchester University in 1946 and graduating in 1949, he joined the university staff and became Secretary to the Inaugural Conference of the Ferranti Mark I computer. In 1964 he moved to Imperial College of Science and Technology, London, and became Professor of Heavy Electrical Engineering. From 1967 to 1976 he also held the post of External Professor of Applied Electricity at the Royal Institution. Research into the use of linear induction motors as shuttle drives in weaving looms was followed by investigations into their application to conveyors in industrial processes and as high-speed propulsion units for railway vehicles. With considerable involvement in a tracked hovercraft project in the 1960s and 1970s, he proposed the concept of transverse flux and the magnetic river high-speed linear induction machine. Linear motors and electromagnetic levitation have been applied to high-speed propulsion in the United States, France and Japan.Laithwaite has written five books and over one hundred papers on the subjects of linear motors and electromagnetic levitation. Two series of Christmas lectures were presented by him at the Royal Institution.[br]Principal Honours and DistinctionsRoyal Society S.G.Brown Medal 1966. Institute of Electronic and Electrical Engineers Nikola Tesla Award 1986.Bibliography1966, Induction Machines for Special Purposes, London.1970, Propulsion Without Wheels, London (discusses properties and applications of linear induction motors).1977 (ed.), Transport Without Wheels, London (describes the design and applications of linear electric motors).1987, A History of Linear Electric Motors, London (provides a general historical survey).Further ReadingB.Bowers, 1982, A History of Electric Light and Power, London, pp. 261–4 (provides an account of early linear motors).M.Poloujadoff, 1980, The Theory of Linear Induction Motors, Oxford (for a comparison of analytical methods recommended by various investigators).GWBiographical history of technology > Laithwaite, Eric Roberts
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36 Gabor, Dennis (Dénes)
SUBJECT AREA: Photography, film and optics[br]b. 5 June 1900 Budapest, Hungaryd. 9 February 1979 London, England[br]Hungarian (naturalized British) physicist, inventor of holography.[br]Gabor became interested in physics at an early age. Called up for military service in 1918, he was soon released when the First World War came to an end. He then began a mechanical engineering course at the Budapest Technical University, but a further order to register for military service prompted him to flee in 1920 to Germany, where he completed his studies at Berlin Technical University. He was awarded a Diploma in Engineering in 1924 and a Doctorate in Electrical Engineering in 1927. He then went on to work in the physics laboratory of Siemens \& Halske. He returned to Hungary in 1933 and developed a new kind of fluorescent lamp called the plasma lamp. Failing to find a market for this device, Gabor made the decision to abandon his homeland and emigrate to England. There he joined British Thompson-Houston (BTH) in 1934 and married a colleague from the company in 1936. Gabor was also unsuccessful in his attempts to develop the plasma lamp in England, and by 1937 he had begun to work in the field of electron optics. His work was interrupted by the outbreak of war in 1939, although as he was not yet a British subject he was barred from making any significant contribution to the British war effort. It was only when the war was near its end that he was able to return to electron optics and begin the work that led to the invention of holography. The theory was developed during 1947 and 1948; Gabor went on to demonstrate that the theories worked, although it was not until the invention of the laser in 1960 that the full potential of his invention could be appreciated. He coined the term "hologram" from the Greek holos, meaning complete, and gram, meaning written. The three-dimensional images have since found many applications in various fields, including map making, medical imaging, computing, information technology, art and advertising. Gabor left BTH to become an associate professor at the Imperial College of Science and Technology in 1949, a position he held until his retirement in 1967. In 1971 he was awarded the Nobel Prize for Physics for his work on holography.[br]Principal Honours and DistinctionsRoyal Society Rumford Medal 1968. Franklin Institute Michelson Medal 1968. CBE 1970. Nobel Prize for Physics 1971.Bibliography1948. "A new microscopic principle", Nature 161:777 (Gabor's earliest publication on holography).1949. "Microscopy by reconstructed wavefronts", Proceedings of the Royal Society A197: 454–87.1951, "Microscopy by reconstructed wavefronts II", Proc. Phys. Soc. B, 64:449–69. 1966, "Holography or the “Whole Picture”", New Scientist 29:74–8 (an interesting account written after laser beams were used to produce optical holograms).Further ReadingT.E.Allibone, 1980, contribution to Biographical Memoirs of Fellows of the Royal Society 26: 107–47 (a full account of Gabor's life and work).JW -
37 RCMS
Военный термин: Royal College of Military Science -
38 RCMS
RCMS, Бр Royal College of Military ScienceEnglish-Russian dictionary of planing, cross-planing and slotting machines > RCMS
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39 RMCS
RMCS, Бр Royal Military College of ScienceEnglish-Russian dictionary of planing, cross-planing and slotting machines > RMCS
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40 Daniell, John Frederick
SUBJECT AREA: Electricity[br]b. 12 March 1790 London, Englandd. 13 March 1845 London, England[br]English chemist, inventor of the Daniell primary electric cell.[br]With an early bias towards science, Daniell's interest in chemistry was formed when he joined a relative's sugar-refining business. He formed a lifelong friendship with W.T.Brande, Professor of Chemistry at the Royal Institution, and together they revived the journal of the Royal Institution, to which Daniell submitted many of his early papers on chemical subjects. He made many contributions to the science of meteorology and in 1820 invented a hydrometer, which became widely used and gave precision to the measurement of atmospheric moisture. As one of the originators of the Society for Promoting Useful Knowledge, Daniell edited several of its early publications. His work on crystallization established his reputation as a chemist and in 1831 he was appointed the first Professor of Chemistry at King's College, London, where he was largely responsible for establishing its department of applied science. He was also involved in the Chemical Society of London and served as its Vice-President. At King's College he began the research into current electricity with which his name is particularly associated. His investigations into the zinc-copper cell revealed that the rapid decline in power was due to hydrogen gas being liberated at the positive electrode. Daniell's cell, invented in 1836, employed a zinc electrode in dilute sulphuric acid and a copper electrode in a solution of copper sulphate, the electrodes being separated by a porous membrane, typically an unglazed earthenware pot. He was awarded the Copley Medal of the Royal Society for his invention which avoided the "polarization" of the simple cell and provided a further source of current for electrical research and for commercial applications such as electroplating. Although the high internal resistance of the Daniell cell limited the current and the potential was only 1.1 volts, the voltage was so unchanging that it was used as a reference standard until the 1870s, when J. Lattimer Clark devised an even more stable cell.[br]Principal Honours and DistinctionsFRS 1814. Royal Society Rumford Medal 1832, Copley Medal 1837, Royal Medal 1842.Bibliography1836, "On voltaic combinations", Phil. Transactions of the Royal Society 126:107–24, 125–9 (the first report of his experiments).Listings of his scientific papers can be found in Catalogue of Scientific Papers, 1868, Vol. II, London: Royal Society.Further ReadingObituary, 1845, Proceedings of the Royal Society, 5:577–80.J.R.Partington, 1964, History of Chemistry, Vol. IV, London (describes the Daniell cell and his electrical researches).B.Bowers, 1982, History of Electric Light and Power, London.GWBiographical history of technology > Daniell, John Frederick
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