subject to military service

1) General subject: bound to military service, liable for (military) service, liable for military service, registrant, person liable for call-up, person liable to conscription for military service

2) Military: available for call up, available for military service, candidate, commandeered person, conscriptee, draft-age person, eligible for military duty, obligated reservist, obligated volunteer, obligor, person subject to draft, subject to military service, subject to recall, subject to recall (в резерве)

3) Law: bound to service, reservist

4) SAP. draftable, liable to military service, obligated to serve in the military, obliged to serve one tour of duty

5) leg.N.P. draftee, one obligated for military service

6) Labor law: person liable for military service

7) Makarov: liable for service

1) General subject: compulsory military service, conscription, national service, compulsory service

2) American: Selective Service (для определённых контингентов призывников), draft

3) Military: (всеобщая) active duty (service) commitment, compulsory (military) service, draft obligation, forced military service, involuntary service, military service obligation, service obligation

4) Law: military duty, selective service (в США)

5) Politico-military term: military obligation, military service

1) General subject: do military service

2) Makarov: do military service

1) General subject: finish military service

2) Makarov: finish( one's) military service

1) General subject: do military service

2) Makarov: do military service

1) General subject: dodge military service

2) Makarov: evade service

тж. как сущ.

SUBJECT AREA: Photography, film and optics

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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.

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SUBJECT AREA: Electricity, Public utilities

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Jablochkoff studied at the Military Engineering College in St Petersburg. Having a scientific bent, he was sent to the Military Galvano Technical School. At the end of his military service in 1871 he was appointed Director General of the Moscow-Kursk telegraph lines for the Midi Railway Company. At this time he began to develop an interest in electric lighting, and in 1875 he left the Imperial Telegraph Service to devote his time exclusively to scientific pursuits. He found employment at the workshop of M Bréguet in Paris, where Gramme dynamos and Serrin arc lamps were being constructed. After some experimentation he found a means of producing a carbon arc that regulated itself without any mechanism. This lamp, the Jablochkoff candle, with two carbon rods placed parallel to each other and so close that an arc formed at the ends, could continue to burn until the rods were consumed. Plaster of Paris was used to separate the two electrodes and crumbled away as the carbon burned, thus exposing fresh carbon. These lamps were used in May 1878 in Paris to illuminate the avenue de l'Opéra, and later in Rome and London, and in essence were the first practical electric street lighting. Since there was no regulating mechanism, several candles could be placed in a single circuit. Despite inherent defects, such as the inability to restart the lamps after they were extinguished by wind or interruption of supply, they remained in use for some purposes for several years on account of their simplicity and cheapness. In 1877 Jablochkoff obtained the earliest patent to employ transformers to distribute current in an alternating-current circuit.

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SUBJECT AREA: Weapons and armour

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Bothe studied under Max Planck at the University of Berlin, gaining his doctorate in 1914. After military service during the First World War, he resumed his investigations into nuclear physics and achieved a breakthrough in 1929 when he developed a method of studying cosmic radiation by placing one Geiger counter on top of another. From this he evolved the means of high-speed counting known as "coincidence counting". The following year, in conjunction with Hans Becker, Bothe made a Further stride forward when they identified a very penetrative neutral particle by bombarding beryllium with alpha particles; this was a significant advance towards creating nuclear energy in that the neutral particle was what Chadwick later identified as the neutron.

In 1934 Bothe's achievements were recognized by his appointment as Director of the Max Planck Institute for Medical Research, although this was after Planck himself had been deposed because of his Jewish sympathies. Bothe did, however, become primarily involved in Germany's pursuit of the atomic bomb and in 1944 constructed Germany's first cyclotron for accelerating nuclear particles. By that time Germany was faced with military defeat and Bothe was not able to develop his ideas further. Even so, for his work in the field of cosmic radiation Bothe shared the 1954 Nobel Prize for Physics with the naturalized Briton (formerly German) Max Born, whose subject was statistical mechanics.

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SUBJECT AREA: Weapons and armour

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The youngest of nine children, Shrapnel was commissioned into the Royal Artillery in July 1779. His early military service was in Newfoundland and it was on his return to England in 1784 that he began to interest himself in artillery ammunition. His particular concern was to develop a round that would be more effective against infantry than the existing solid cannon-ball and canister round. The result was a hollow, spherical shell filled with lead musket balls and fitted with a bursting charge and fuse. His development of the shell was interrupted by active service in the Low Countries in 1793–4, during which he was wounded, and duty in the West Indies. Nevertheless, in 1803 the British Army adopted his shell, which during the next twelve years played a significant part on the battlefield.

In 1804 Shrapnel was appointed Assistant Inspector of Artillery and made further contributions to the science of gunnery, drawing up a series of range tables to improve accuracy of fire, inventing the brass tangent slide for better sighting of guns, and improving the production of howitzers and mortars by way of the invention of parabolic chambers. His services were recognized in 1814 by a Treasury grant of £1,200 per annum for life. He was promoted Major-General in 1819 and appointed a Colonel-Commandant of the Royal Artillery in 1827, and in the 1830s there was talk of him being made a baronet, but nothing came of it. Shrapnel remains a current military term, although modern bursting shells rely on the fragmentation of the casing of the projectile for their effect rather than his original concept of having shot inside them.

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SUBJECT AREA: Steam and internal combustion engines

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Sadi was the eldest son of Lazare Carnot, who was prominent as one of Napoleon's military and civil advisers. Sadi was born in the Palais du Petit Luxembourg and grew up during the Napoleonic wars. He was tutored by his father until in 1812, at the minimum age of 16, he entered the Ecole Polytechnique to study stress analysis, mechanics, descriptive geometry and chemistry. He organized the students to fight against the allies at Vincennes in 1814. He left the Polytechnique that October and went to the Ecole du Génie at Metz as a student second lieutenant. While there, he wrote several scientific papers, but on the Restoration in 1815 he was regarded with suspicion because of the support his father had given Napoleon. In 1816, on completion of his studies, Sadi became a second lieutenant in the Metz engineering regiment and spent his time in garrison duty, drawing up plans of fortifications. He seized the chance to escape from this dull routine in 1819 through an appointment to the army general staff corps in Paris, where he took leave of absence on half pay and began further courses of study at the Sorbonne, Collège de France, Ecole des Mines and the Conservatoire des Arts et Métiers. He was inter-ested in industrial development, political economy, tax reform and the fine arts.

It was not until 1821 that he began to concentrate on the steam-engine, and he soon proposed his early form of the Carnot cycle. He sought to find a general solution to cover all types of steam-engine, and reduced their operation to three basic stages: an isothermal expansion as the steam entered the cylinder; an adiabatic expansion; and an isothermal compression in the condenser. In 1824 he published his Réflexions sur la puissance motrice du feu, which was well received at the time but quickly forgotten. In it he accepted the caloric theory of heat but pointed out the impossibility of perpetual motion. His main contribution to a correct understanding of a heat engine, however, lay in his suggestion that power can be produced only where there exists a temperature difference due "not to an actual consumption of caloric but to its transportation from a warm body to a cold body". He used the analogy of a water-wheel with the water falling around its circumference. He proposed the true Carnot cycle with the addition of a final adiabatic compression in which motive power was con sumed to heat the gas to its original incoming temperature and so closed the cycle. He realized the importance of beginning with the temperature of the fire and not the steam in the boiler. These ideas were not taken up in the study of thermodynartiics until after Sadi's death when B.P.E.Clapeyron discovered his book in 1834.

In 1824 Sadi was recalled to military service as a staff captain, but he resigned in 1828 to devote his time to physics and economics. He continued his work on steam-engines and began to develop a kinetic theory of heat. In 1831 he was investigating the physical properties of gases and vapours, especially the relationship between temperature and pressure. In June 1832 he contracted scarlet fever, which was followed by "brain fever". He made a partial recovery, but that August he fell victim to a cholera epidemic to which he quickly succumbed.

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SUBJECT AREA: Mechanical, pneumatic and hydraulic engineering

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Hans Renold was educated at the cantonal school of his native town and at the Polytechnic in Zurich. He worked in two or three small workshops during the polytechnic vacations and served an apprenticeship of eighteen months in an engineering works at Neuchâtel, Switzerland. After a short period of military service he found employment as a draughtsman in an engineering firm at Saint-Denis, near Paris, from 1871 to 1873. In 1873 Renold moved first to London and then to Manchester as a draughtsman and inspector with a firm of machinery exporters. From 1877 to 1879 he was a partner in his own firm of machine exporters. In 1879 he purchased a small firm in Salford making chain for the textile industry. At about this time J.K.Starley introduced the "safety" bicycle, which, however, lacked a satisfactory drive chain. Renold met this need with the invention of the bush roller chain, which he patented in 1880. The new chain formed the basis of the precision chain industry: the business expanded and new premises were acquired in Brook Street, Manchester, in 1881. In the same year Renold became a naturalized British subject.

Continued expansion of the business necessitated the opening of a new factory in Brook Street in 1889. The factory was extended in 1895, but by 1906 more accommodation was needed and a site of 11 ½ acres was acquired in the Manchester suburb of Burnage: the move to the new building was finally completed in 1914. Over the years, further developments in the techniques of chain manufacture were made, including the invention in 1895 of the inverted tooth or silent chain. Renold made his first visit to America in 1891 to study machine-tool developments and designed for his own works special machine tools, including centreless grinding machines for dealing with wire rods up to 10 ft (3 m) in length.

The business was established as a private limited company in 1903 and merged with the Coventry Chain Company Ltd in 1930. Good industrial relations were always of concern to Renold and he established a 48-hour week as early as 1896, in which year a works canteen was opened. Joint consultation with shop stewards date2 from 1917. Renold was elected a Member of the Institution of Mechanical Engineers in 1902 and in 1917 he was made a magistrate of the City of Manchester.

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SUBJECT AREA: Land transport, Railways and locomotives

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Chapelon's technical education at the Ecole Centrale des Arts et Manufactures, Paris, was interrupted by extended military service during the First World War. From experience of observing artillery from the basket of a captive balloon, he developed a method of artillery fire control which was more accurate than that in use and which was adopted by the French army.

In 1925 he joined the motive-power and rolling-stock department of the Paris-Orléans Railway under Chief Mechanical Engineer Maurice Lacoin and was given the task of improving the performance of its main-line 4–6–2 locomotives, most of them compounds. He had already made an intensive study of steam locomotive design and in 1926 introduced his Kylchap exhaust system, based in part on the earlier work of the Finnish engineer Kyläla. Chapelon improved the entrainment of the hot gases in the smokebox by the exhaust steam and so minimized back pressure in the cylinders, increasing the power of a locomotive substantially. He also greatly increased the cross-sectional area of steam passages, used poppet valves instead of piston valves and increased superheating of steam. PO (Paris-Orléans) 4–6–2s rebuilt on these principles from 1929 onwards proved able to haul 800-ton trains, in place of the previous 500-ton trains, and to do so to accelerated schedules with reduced coal consumption. Commencing in 1932, some were converted, at the time of rebuilding, into 4–8–0s to increase adhesive weight for hauling heavy trains over the steeply graded Paris-Toulouse line.

Chapelon's principles were quickly adopted on other French railways and elsewhere.

H.N. Gresley was particularly influenced by them. After formation of the French National Railways (SNCF) in 1938, Chapelon produced in 1941 a prototype rebuilt PO 2–10–0 freight locomotive as a six-cylinder compound, with four low-pressure cylinders to maximize expansive use of steam and with all cylinders steam-jacketed to minimize heat loss by condensation and radiation. War conditions delayed extended testing until 1948–52. Meanwhile Chapelon had, by rebuilding, produced in 1946 a high-powered, three-cylinder, compound 4–8–4 intended as a stage in development of a proposed range of powerful and thermally efficient steam locomotives for the postwar SNCF: a high-speed 4–6–4 in this range was to run at sustained speeds of 125 mph (200 km/h). However, plans for improved steam locomotives were then overtaken in France by electriflcation and dieselization, though the performance of the 4–8–4, which produced 4,000 hp (3,000 kW) at the drawbar for the first time in Europe, prompted modification of electric locomotives, already on order, to increase their power.

Chapelon retired from the SNCF in 1953, but continued to act as a consultant. His principles were incorporated into steam locomotives built in France for export to South America, and even after the energy crisis of 1973 he was consulted on projects to build improved, high-powered steam locomotives for countries with reserves of cheap coal. The eventual fall in oil prices brought these to an end.

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SUBJECT AREA: Medical technology

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During his medical training at Manchester he qualified for the Fellowship of the Royal College of Surgeons and obtained his FRCS in 1936, within a year of becoming medically qualified. Following military service as an orthopaedic specialist, he was appointed a consultant at the Manchester Royal Infirmary in 1947.

Charnley investigated the problems of joint lubrication using polytetrafluoroethylene (PTFE) and a series of 300 initially successful cases laid the foundation for further developments, involving total hip-joint replacement, when in 1962 high-density polythene became available as a suitable inert material. The need for a totally sterile operating environment in which to carry out such procedures led him to develop ultra-clean-air operating-theatre modules which proved to have wide application in relation to other surgical disciplines and to the problems of hospital building. To further these principles he resigned from the Royal Infirmary and was the guiding spirit in the establishment of the centre for hip surgery at Wrightington Hospital in Lancashire, which gained wide international recognition.

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SUBJECT AREA: Agricultural and food technology

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Columella was a native of Gades, a Roman municipium in southern Spain. The only knowledge of him is through his writings, in which he makes reference to his uncle, but not to his parents. His uncle was an expert farmer of the region, and it would appear that Columella spent much of his youth with him. As an adult he moved near to Rome, and spent the rest of his life in that region, owning at least three farms in Latium, and a fourth probably near the Etruscan town of Caere. There is evidence that he visited Syria in Cilicia, where it is possible that he was doing military service. His fame lies in the twelve books of the Res Rustica, which provide the most detailed extant discussion of Roman agricultural practice, and a single volume on trees. Each volume of Res Rustica was addressed and sent to Publius Silvinius as it was completed. The single volume De Arboribus, dealing with trees, vines and olives, was addressed to Epruis Marcellus. Columella was quoted by Seneca (4 BC-65 AD) and Pliny the elder (23–79 AD).

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SUBJECT AREA: Electricity, Electronics and information technology, Telecommunications

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At the age of 17 Hertz entered the Gelehrtenschule of the Johaneums in Hamburg, but he left the following year to obtain practical experience for a year with a firm of engineers in Frankfurt am Main. He then spent six months at the Dresden Technical High School, followed by year of military service in Berlin. At this point he decided to switch from engineering to physics, and after a year in Munich he studied physics under Helmholtz at the University of Berlin, gaining his PhD with high honours in 1880. From 1883 to 1885 he was a privat-dozent at Kiel, during which time he studied the electromagnetic theory of James Clerk Maxwell. In 1885 he succeeded to the Chair in Physics at Karlsruhe Technical High School. There, in 1887, he constructed a rudimentary transmitter consisting of two 30 cm (12 in.) rods with metal balls separated by a 7.5 mm (0.3 in.) gap at the inner ends and metallic plates at the outer ends, the whole assembly being mounted at the focus of a large parabolic metal mirror and the two rods being connected to an induction coil. At the other side of his laboratory he placed a 70 cm (27½ in.) diameter wire loop with a similar air gap at the focus of a second metal mirror. When the induction coil was made to create a spark across the transmitter air gap, he found that a spark also occurred at the "receiver". By a series of experiments he was not only able to show that the invisible waves travelled in straight lines and were reflected by the parabolic mirrors, but also that the vibrations could be refracted like visible light and had a similar wavelength. By this first transmission and reception of radio waves he thus confirmed the theoretical predictions made by Maxwell some twenty years earlier. It was probably in his experiments with this apparatus in 1887 that Hertz also observed that the voltage at which a spark was able to jump a gap was significantly reduced by the presence of ultraviolet light. This so-called photoelectric effect was subsequently placed on a theoretical basis by Albert Einstein in 1905. In 1889 he became Professor of Physics at the University of Bonn, where he continued to investigate the nature of electric discharges in gases at low pressure until his death after a long and painful illness. In recognition of his measurement of radio and other waves, the international unit of frequency of an oscillatory wave, the cycle per second, is now universally known as the Hertz.

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See also: Heaviside, Oliver

SUBJECT AREA: Paper and printing

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Mergenthaler came from a family of teachers, but following a mechanical bent he was apprenticed to a clockmaker. Having served his time, Mergenthaler emigrated to the USA in 1872 to avoid military service. He immediately secured work in Washington, DC, in the scientific instrument shop of August Hahl, the son of his former master. He steadily acquired a reputation for skill and ingenuity, and in 1876, when Hahl transferred his business to Baltimore, Mergenthaler went too. Soon after, they were commissioned to remedy the defects in a model of a writing machine devised by James O.Clephane of Washington. It produced print by typewriting, which was then multiplied by lithography. Mergenthaler soon corrected the defects and Clephane ordered a full-size version. This was completed in 1877 but did not work satisfactorily. Nevertheless, Mergenthaler was moved to engage in the long battle to mechanize the typesetting stage of the printing process. Clephane suggested substituting stereotyping for lithography in his device, but in spite of their keen efforts Mergenthaler and Hahl were again unsuccessful and they abandoned the project. In spare moments Mergenthaler continued his search for a typesetting machine. Late in 1883 it occurred to him to stamp matrices into type bars and to cast type metal into them in the same machine. From this idea, the Linotype machine developed and was completed by July 1884. It worked well and a patent was granted on 26 August that year, and Clephane and his associates set up the National Typographic Company of West Virginia to manufacture it. The New York Tribune ordered twelve Linotypes, and on 3 July 1886 the first of these set part of that day's issue. During the previous year the company had passed into the hands of a group of newspaper owners; increasing differences with the Board led to Mergenthaler's resignation in 1888, but he nevertheless continued to improve the machine, patenting over fifty modifications. The Linotype, together with the Monotype of Tolbert Lanston, rapidly supplanted earlier typesetting methods, and by the 1920s it reigned supreme, the former being used more for newspapers, the latter for book work.

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