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121 turn
turn [tɜ:n]tourner ⇒ 1A (a), 1B (a), 1B (d), 1C (d), 2 (a), 2 (b), 2 (f) faire tourner ⇒ 1A (a) retourner ⇒ 1B (a) changer ⇒ 1C (a) faire devenir ⇒ 1C (a) se tourner ⇒ 2 (a) se retourner ⇒ 2 (b) devenir ⇒ 2 (d) se changer ⇒ 2 (e) tour ⇒ 3 (a), 3 (d), 3 (f), 3 (g) tournant ⇒ 3 (b), 3 (c) virage ⇒ 3 (b), 3 (c) tournure ⇒ 3 (d)A.(a) (cause to rotate, move round) tourner; (shaft, axle) faire tourner, faire pivoter; (direct) diriger;∎ she turned the key in the lock (to lock) elle a donné un tour de clé (à la porte), elle a fermé la porte à clé; (to unlock) elle a ouvert la porte avec la clé;∎ turn the wheel all the way round faites faire un tour complet à la roue;∎ Cars to turn the (steering) wheel tourner le volant;∎ turn the knob to the right tournez le bouton vers la droite;∎ turn the knob to "record" mettez le bouton en position "enregistrer";∎ she turned the oven to its highest setting elle a allumé ou mis le four à la température maximum;∎ she turned her chair towards the window elle a tourné sa chaise face à la fenêtre;∎ he turned the car into the drive il a engagé la voiture dans l'allée;∎ we turned our steps homeward nous avons dirigé nos pas vers la maison;∎ turn your head this way tournez la tête de ce côté∎ she turned the conversation to sport elle a orienté la conversation vers le sport;∎ their votes could turn the election in his favour leurs voix pourraient faire basculer les élections en sa faveur;∎ he would not be turned from his decision to resign il n'y a pas eu moyen de le faire revenir sur sa décision de démissionner;∎ nothing would turn the rebels from their cause rien ne pourrait détourner les rebelles de leur cause;∎ you've turned my whole family against me vous avez monté toute ma famille contre moi;∎ we turned his joke against him nous avons retourné la plaisanterie contre lui;∎ let's turn our attention to the matter in hand occupons-nous de l'affaire en question;∎ she turned her attention to the problem elle s'est concentrée sur le problème;∎ to turn one's thoughts to God tourner ses pensées vers Dieu;∎ research workers have turned the theory to practical use les chercheurs ont mis la théorie en pratique;∎ how can we turn this policy to our advantage or account? comment tirer parti de cette politique?, comment tourner cette politique à notre avantage?;∎ to turn one's back on sb tourner le dos à qn;∎ she looked at the letter the minute his back was turned dès qu'il a eu le dos tourné, elle a jeté un coup d'œil à la lettre;∎ how can you turn your back on your own family? comment peux-tu abandonner ta famille?;∎ she turned her back on her friends elle a tourné le dos à ses amis;∎ to turn one's back on the past tourner la page, tourner le dos au passé;∎ she was so pretty that she turned heads wherever she went elle était si jolie que tout le monde se retournait sur son passage;∎ success had not turned his head la réussite ne lui avait pas tourné la tête, il ne s'était pas laissé griser par la réussite;∎ all their compliments had turned her head tous leurs compliments lui étaient montés à la tête ou lui avaient tourné la tête;∎ to turn the tables on sb reprendre l'avantage sur qn;∎ figurative now the tables are turned maintenant les rôles sont renversésB.∎ the very thought of food turns my stomach l'idée même de manger me soulève le cœur;∎ to turn sth on its head bouleverser qch, mettre qch sens dessus dessous;∎ recent events have turned the situation on its head les événements récents ont retourné la situation∎ he turned the beggar from his door il a chassé le mendiant;∎ they turned the poachers off their land ils ont chassé les braconniers de leurs terres(c) (release, let loose)∎ he turned the cattle into the field il a fait rentrer le bétail dans le champ(d) (go round → corner) tourner(e) (reach → in age, time) passer, franchir;∎ I had just turned twenty je venais d'avoir vingt ans;∎ she's turned thirty elle a trente ans passés, elle a dépassé le cap de la trentaine;∎ it has only just turned four o'clock il est quatre heures passées de quelques secondes(f) (do, perform) faire;∎ the skater turned a circle on the ice la patineuse a décrit un cercle sur la glace;∎ to turn a cartwheel faire la roue∎ I've turned my ankle je me suis tordu la chevilleC.∎ to turn sth into sth transformer ou changer qch en qch;∎ bitterness turned their love into hate l'amertume a transformé leur amour en haine;∎ she turned the remark into a joke elle a tourné la remarque en plaisanterie;∎ they're turning the book into a film ils adaptent le livre pour l'écran;∎ the sight turned his heart to ice le spectacle lui a glacé le cœur ou l'a glacé;∎ Stock Exchange you should turn your shares into cash vous devriez réaliser vos actions;∎ time had turned the pages yellow le temps avait jauni les pages(b) (make bad, affect)∎ the lemon juice turned the milk (sour) le jus de citron a fait tourner le lait∎ to turn a good profit faire de gros bénéfices;∎ he turns an honest penny il gagne sa vie honnêtement;∎ familiar he was out to turn a fast buck il cherchait à gagner ou faire du fric facilement∎ a well-turned leg une jambe bien faite;∎ figurative to turn a phrase faire des phrases∎ to turn on an axis tourner autour d'un axe;∎ the crane turned (through) 180° la grue a pivoté de 180°;∎ the key won't turn la clé ne tourne pas;∎ he turned right round il a fait volte-face;∎ they turned towards me ils se sont tournés vers moi ou de mon côté;∎ they turned from the gruesome sight ils se sont détournés de cet horrible spectacle;∎ turn (round) and face the front tourne-toi et regarde devant toi∎ figurative the smell made my stomach turn l'odeur m'a soulevé le cœur(c) (change direction → person) tourner; (→ vehicle) tourner, virer; (→ luck, wind) tourner, changer; (→ river, road) faire un coude; (→ tide) changer de direction;∎ Military right turn! à droite!;∎ we turned towards town nous nous sommes dirigés vers la ville;∎ he turned (round) and went back il a fait demi-tour et est revenu sur ses pas;∎ the road turns south la route tourne vers le sud;∎ the car turned into our street la voiture a tourné dans notre rue;∎ we turned onto the main road nous nous sommes engagés dans ou nous avons pris la grand-route;∎ we turned off the main road nous avons quitté la grand-route;∎ Stock Exchange the market turned downwards/upwards le marché était à la baisse/à la hausse;∎ figurative I don't know where or which way to turn je ne sais plus quoi faire∎ it's turning cold il commence à faire froid;∎ the weather's turned bad le temps s'est gâté;∎ the argument turned nasty la dispute s'est envenimée;∎ she turned angry when he refused elle s'est mise en colère quand il a refusé;∎ to turn red/blue virer au rouge/bleu;∎ he turned red il a rougi;∎ a lawyer turned politician un avocat devenu homme politique;∎ to turn professional passer ou devenir professionnel;∎ the whole family turned Muslim toute la famille s'est convertie à l'islam(e) (transform) se changer, se transformer;∎ the pumpkin turned into a carriage la citrouille s'est transformée en carrosse;∎ the rain turned to snow la pluie s'est transformée en neige;∎ the little girl had turned into a young woman la petite fille était devenue une jeune femme;∎ their love turned to hate leur amour se changea en haine ou fit place à la haine∎ the weather has turned le temps a changé3 noun(a) (revolution, rotation) tour m;∎ he gave the handle a turn il a tourné la poignée;∎ give the screw another turn donnez un autre tour de vis;∎ with a turn of the wrist avec un tour de poignet∎ take the second turn on the right prenez la deuxième à droite;∎ no right turn (sign) défense de tourner à droite;∎ figurative at every turn à tout instant, à tout bout de champ(c) (bend, curve in road) virage m, tournant m;∎ there is a sharp turn to the left la route fait un brusque virage ou tourne brusquement à gauche(d) (change in state, nature) tour m, tournure f;∎ the conversation took a new turn la conversation a pris une nouvelle tournure;∎ it was an unexpected turn of events les événements ont pris une tournure imprévue;∎ things took a turn for the worse/better les choses se sont aggravées/améliorées;∎ the patient took a turn for the worse/better l'état du malade s'est aggravé/amélioré;∎ the situation took a tragic turn la situation a tourné au tragique∎ at the turn of the year vers la fin de l'année;∎ at the turn of the century au tournant du siècle(f) (in game, order, queue) tour m;∎ it's my turn c'est à moi, c'est mon tour;∎ it's his turn to do the dishes c'est à lui ou c'est son tour de faire la vaisselle;∎ you'll have to wait your turn il faudra attendre ton tour;∎ they laughed and cried by turns ils passaient tour à tour du rire aux larmes;∎ to take it in turns to do sth faire qch à tour de rôle;∎ let's take it in turns to drive relayons-nous au volant;∎ we took turns sleeping on the floor nous avons dormi par terre à tour de rôle;∎ turn and turn about à tour de rôle(g) (action, deed)∎ to do sb a good/bad turn rendre service/jouer un mauvais tour à qn;∎ he did them a bad turn il leur a joué un mauvais tour;∎ I've done my good turn for the day j'ai fait ma bonne action de la journée;∎ proverb one good turn deserves another = un service en vaut un autre, un service rendu en appelle un autre∎ she had one of her (funny) turns this morning elle a eu une de ses crises ce matin∎ you gave me quite a turn! tu m'as fait une sacrée peur!, tu m'as fait une de ces peurs!;∎ it gave me such a turn! j'ai eu une de ces peurs!∎ let's go for or take a turn in the garden allons faire un tour dans le jardin(k) (tendency, style)∎ to have an optimistic turn of mind être optimiste de nature ou d'un naturel optimiste;∎ he has a strange turn of mind il a une drôle de mentalité;∎ to have a good turn of speed rouler vite;∎ turn of phrase tournure f ou tour m de phrase;∎ she has a witty turn of phrase elle est très spirituelle ou pleine d'esprit(l) (purpose, requirement) exigence f, besoin m;∎ this book has served its turn ce livre a fait son temps(n) Stock Exchange (transaction) transaction f (qui comprend l'achat et la vente); British (difference in price) écart m entre le prix d'achat et le prix de vente∎ a comedy turn un numéro de comédie∎ she interviewed each of us in turn elle a eu un entretien avec chacun de nous l'un après l'autre;∎ I told Sarah and she in turn told Paul je l'ai dit à Sarah qui, à son tour, l'a dit à Paul;∎ I worked in turn as a waiter, an actor and a teacher j'ai travaillé successivement ou tour à tour comme serveur, acteur et enseignant∎ to be on the turn être sur le point de changer;∎ the tide is on the turn c'est le changement de marée; figurative le vent tourne;∎ the milk is on the turn le lait commence à tourner∎ don't play out of turn attends ton tour pour jouer;∎ figurative to speak out of turn faire des remarques déplacées, parler mal à proposAmerican turn signal lever (manette f de) clignotant mse retourner contre, s'en prendre à∎ she turned aside to blow her nose elle se détourna pour se moucheralso figurative écarter, détourner∎ she turned her head away from him elle s'est détournée de lui∎ the college turned away hundreds of applicants l'université a refusé des centaines de candidats;∎ she turned the salesman away elle chassa le représentant;∎ to turn people away (in theatre etc) refuser du monde;∎ we've been turning business away nous avons refusé du travailse détourner;∎ he turned away from them in anger en ou de colère, il leur a tourné le dos∎ it was getting dark so we decided to turn back comme il commençait à faire nuit, nous avons décidé de faire demi-tour;∎ my mind is made up, there is no turning back ma décision est prise, je ne reviendrai pas dessus∎ turn back to chapter one revenez ou retournez au premier chapitre∎ to turn the clock back remonter dans le temps, revenir en arrière(a) (heating, lighting, sound) baisser∎ to turn down the corner of a page corner une page;∎ to turn down the bed ouvrir le lit∎ they offered him a job but he turned them down ils lui ont proposé un emploi mais il a rejeté leur offre;∎ familiar she turned me down flat elle m'a envoyé balader(move downwards) tourner vers le bas;∎ the corners of his mouth turned down il a fait la moue ou une grimace désapprobatrice➲ turn in(a) (return, give in → borrowed article, equipment, piece of work) rendre, rapporter; (→ criminal) livrer à la police;∎ they turned the thief in (took him to the police) ils ont livré le voleur à la police; (informed on him) ils ont dénoncé le voleur à la police∎ turn in the edges rentrez les bords∎ the actor turned in a good performance l'acteur a très bien joué;∎ the company turned in record profits l'entreprise a fait des bénéfices record(a) (feet, toes)∎ my toes turn in j'ai les pieds en dedans∎ he turned in at the gate arrivé à la porte, il est entré∎ to turn in on oneself se replier sur soi-même➲ turn off(a) (switch off → light) éteindre; (→ heater, radio, television) éteindre, fermer; (cut off at mains) couper; (tap) fermer;∎ she turned the ignition/engine off elle a coupé le contact/arrêté le moteur∎ her superior attitude really turns me off son air suffisant me rebute(a) (leave road) tourner;∎ we turned off at junction 5 nous avons pris la sortie d'autoroute 5(b) (switch off) s'éteindre;∎ the heater turns off automatically l'appareil de chauffage s'éteint ou s'arrête automatiquement➲ turn on(a) (switch on → electricity, heating, light, radio, television) allumer; (→ engine) mettre en marche; (→ water) faire couler; (→ tap) ouvrir; (open at mains) ouvrir;∎ figurative she can turn on the charm/the tears whenever necessary elle sait faire du charme/pleurer quand il le faut(b) familiar (person → interest) intéresser□ ; (→ sexually) exciter; (→ introduce to drugs) initier à la drogue□ ;∎ to be turned on (sexually) être excité;∎ the movie didn't turn me on at all le film ne m'a vraiment pas emballé;∎ he turned us on to this new pianist il nous a fait découvrir ce nouveau pianiste(attack) attaquer;∎ the dogs turned on him les chiens l'ont attaqué ou se sont jetés sur lui;∎ his colleagues turned on him and accused him of stealing ses collègues s'en sont pris à lui et l'ont accusé de vol(take drugs) se droguer(a) (switch on) s'allumer;∎ the oven turns on automatically le four s'allume automatiquement(b) (depend, hinge on) dépendre de, reposer sur;∎ the whole case turned on or upon this detail toute l'affaire reposait sur ce détail;∎ everything turns on whether he continues as president tout dépend s'il reste président ou non➲ turn out∎ she turns her toes out when she walks elle marche en canard∎ he turned his daughter out of the house il a mis sa fille à la porte ou a chassé sa fille de la maison;∎ he was turned out of his job il a été renvoyé∎ turn the cake out onto a plate démoulez le gâteau sur une assiette∎ to turn out a room faire une pièce à fond∎ he turns out a book a year il écrit un livre par an;∎ few schools turn out the kind of people we need peu d'écoles forment le type de gens qu'il nous faut(g) (police, troops) envoyer;∎ turn out the guard! faites sortir la garde!∎ nicely or smartly turned out élégant;∎ he was turned out in a suit and a tie il portait un costume-cravate;∎ she always turns her children out beautifully elle habille toujours bien ses enfants(a) (show up) venir, arriver; Military (guard) (aller) prendre la faction; (troops) aller au rassemblement;∎ thousands turned out for the concert des milliers de gens sont venus ou ont assisté au concert;∎ the doctor had to turn out in the middle of the night le docteur a dû se déplacer au milieu de la nuit(b) (car, person) sortir, partir;∎ the car turned out of the car park la voiture est sortie du parking∎ my feet turn out j'ai les pieds en canard ou en dehors∎ his statement turned out to be false sa déclaration s'est révélée fausse;∎ her story turned out to be true ce qu'elle a raconté était vrai;∎ he turned out to be a scoundrel il s'est révélé être un vaurien, on s'est rendu compte que c'était un vaurien;∎ it turns out that… il se trouve que… + indicative∎ I don't know how it turned out je ne sais pas comment cela a fini;∎ how did the cake turn out? le gâteau était-il réussi?;∎ the story turned out happily l'histoire s'est bien terminée ou a bien fini;∎ the evening turned out badly la soirée a mal tourné;∎ everything will turn out fine tout va s'arranger ou ira bien;∎ as it turns out, he needn't have worried en l'occurrence ou en fin de compte, ce n'était pas la peine de se faire du souci(a) (playing card, mattress, person, stone) retourner; (page) tourner; (vehicle) retourner; (boat) faire chavirer;∎ I was turning over the pages of the magazine je feuilletais la revue;∎ figurative to turn over a new leaf s'acheter une conduite;∎ Agriculture to turn over the soil retourner la terre(b) (consider) réfléchir à ou sur;∎ I was turning the idea over in my mind je tournais et retournais ou ruminais l'idée dans ma tête(c) (hand over, transfer) rendre, remettre;∎ he turned the responsibility over to his deputy il s'est déchargé de la responsabilité sur son adjoint;∎ to turn sb over to the authorities livrer qn aux autorités∎ he's turning the land over to cattle farming il reconvertit sa terre dans l'élevage du bétail∎ the store turns over £1,000 a week la boutique fait un chiffre d'affaires de 1000 livres par semaine(f) (search through) fouiller(g) British familiar (rob → person) voler□, dévaliser□ ; (→ store) dévaliser□ ; (→ house) cambrioler□(a) (roll over → person) se retourner; (→ vehicle) se retourner, faire un tonneau; (→ boat) se retourner, chavirer(c) (when reading) tourner;∎ please turn over (in letter) TSVP∎ she turned round and waved goodbye elle se retourna et dit au revoir de la main;∎ the dancers turned round and round les danseurs tournaient ou tournoyaient (sur eux-mêmes)(b) (face opposite direction → person) faire volte-face, faire demi-tour; (→ vehicle) faire demi-tour;∎ figurative she turned round and accused us of stealing elle s'est retournée contre nous et nous a accusés de vol(a) (rotate → head) tourner; (→ object, person) tourner, retourner; (→ vehicle) faire faire demi-tour à;∎ could you turn the car round please? tu peux faire demi-tour, s'il te plaît?(b) (quantity of work) traiter∎ to turn a situation round renverser une situation;∎ Commerce to turn a company round sauver une entreprise de la faillite(d) (sentence, idea) retourner∎ turn to chapter one allez au premier chapitre(b) (seek help from) s'adresser à, se tourner vers;∎ to turn to sb for advice consulter qn, demander conseil à qn;∎ I don't know who to turn to je ne sais pas à qui m'adresser ou qui aller trouver;∎ he turned to his mother for sympathy il s'est tourné vers sa mère pour qu'elle le console;∎ she won't turn to me for help elle ne veut pas me demander de l'aide;∎ he turned to the bottle il s'est mis à boire∎ her thoughts turned to her sister elle se mit à penser à sa sœur;∎ the discussion turned to the war on se mit à discuter de la guerre(d) (address → subject, issue etc) aborder, traiter;∎ we shall now turn to the problem of housing nous allons maintenant aborder le problème du logement;∎ let us turn to another topic passons à un autre sujet➲ turn up(a) (heat, lighting, radio, TV) mettre plus fort;∎ to turn the sound up augmenter ou monter le volume;∎ she turned the oven up elle a mis ou réglé le four plus fort, elle a augmenté la température du four;∎ British very familiar turn it up! la ferme!∎ her research turned up some interesting new facts sa recherche a révélé de nouveaux détails intéressants(c) (point upwards) remonter, relever;∎ she has a turned-up nose elle a le nez retroussé(d) (collar) relever; (trousers) remonter; (sleeve) retrousser, remonter; (in order to shorten) raccourcir en faisant un ourlet(e) (uncover → card) retourner∎ she turned up at my office this morning elle s'est présentée à mon bureau ce matin;∎ he'll turn up again one of these days il reviendra bien un de ces jours;∎ I'll take the first job that turns up je prendrai le premier poste qui se présentera(b) (be found) être trouvé ou retrouvé;∎ her bag turned up eventually elle a fini par retrouver son sac∎ don't worry, something will turn up ne t'en fais pas, tu finiras par trouver quelque chose;∎ until something better turns up en attendant mieux -
122 relevant costs/revenues
Fincosts and revenues appropriate to a specific management decision. These are represented by future cash flows whose magnitude will vary depending upon the outcome of the management decision made. If stock is sold by a retailer, the relevant cost, used in the determination of the profitability of the transaction, would be the cost of replacing the stock, not its original purchase price, which is a sunk cost. Abandonment analysis, based on relevant cost and revenues, is the process of determining whether or not it is more profitable to discontinue a product or service than to continue it. -
123 Bateman, John Frederick La Trobe
[br]b. 30 May 1810 Lower Wyke, near Halifax, Yorkshire, Englandd. 10 June 1889 Moor Park, Farnham, Surrey, England[br]English civil engineer whose principal works were concerned with reservoirs, water-supply schemes and pipelines.[br]Bateman's maternal grandfather was a Moravian missionary, and from the age of 7 he was educated at the Moravian schools at Fairfield and Ockbrook. At the age of 15 he was apprenticed to a "civil engineer, land surveyor and agent" in Oldham. After this apprenticeship, Bateman commenced his own practice in 1833. One of his early schemes and reports was in regard to the flooding of the river Medlock in the Manchester area. He came to the attention of William Fairbairn, the engine builder and millwright of Canal Street, Ancoats, Manchester. Fairbairn used Bateman as his site surveyor and as such he prepared much of the groundwork for the Bann reservoirs in Northern Ireland. Whilst the reports on the proposals were in the name of Fairbairn, Bateman was, in fact, appointed by the company as their engineer for the execution of the works. One scheme of Bateman's which was carried forward was the Kendal Reservoirs. The Act for these was signed in 1845 and was implemented not for the purpose of water supply but for the conservation of water to supply power to the many mills which stood on the river Kent between Kentmere and Morecambe Bay. The Kentmere Head dam is the only one of the five proposed for the scheme to survive, although not all the others were built as they would have retained only small volumes of water.Perhaps the greatest monument to the work of J.F.La Trobe Bateman is Manchester's water supply; he was consulted about this in 1844, and construction began four years later. He first built reservoirs in the Longdendale valley, which has a very complicated geological stratification. Bateman favoured earth embankment dams and gravity feed rather than pumping; the five reservoirs in the valley that impound the river Etherow were complex, cored earth dams. However, when completed they were greatly at risk from landslips and ground movement. Later dams were inserted by Bateman to prevent water loss should the older dams fail. The scheme was not completed until 1877, by which time Manchester's population had exceeded the capacity of the original scheme; Thirlmere in Cumbria was chosen by Manchester Corporation as the site of the first of the Lake District water-supply schemes. Bateman, as Consulting Engineer, designed the great stone-faced dam at the west end of the lake, the "gothic" straining well in the middle of the east shore of the lake, and the 100-mile (160 km) pipeline to Manchester. The Act for the Thirlmere reservoir was signed in 1879 and, whilst Bateman continued as Consulting Engineer, the work was supervised by G.H. Hill and was completed in 1894.Bateman was also consulted by the authorities in Glasgow, with the result that he constructed an impressive water-supply scheme derived from Loch Katrine during the years 1856–60. It was claimed that the scheme bore comparison with "the most extensive aqueducts in the world, not excluding those of ancient Rome". Bateman went on to superintend the waterworks of many cities, mainly in the north of England but also in Dublin and Belfast. In 1865 he published a pamphlet, On the Supply of Water to London from the Sources of the River Severn, based on a survey funded from his own pocket; a Royal Commission examined various schemes but favoured Bateman's.Bateman was also responsible for harbour and dock works, notably on the rivers Clyde and Shannon, and also for a number of important water-supply works on the Continent of Europe and beyond. Dams and the associated reservoirs were the principal work of J.F.La Trobe Bateman; he completed forty-three such schemes during his professional career. He also prepared many studies of water-supply schemes, and appeared as professional witness before the appropriate Parliamentary Committees.[br]Principal Honours and DistinctionsFRS 1860. President, Institution of Civil Engineers 1878, 1879.BibliographyAmong his publications History and Description of the Manchester Waterworks, (1884, London), and The Present State of Our Knowledge on the Supply of Water to Towns, (1855, London: British Association for the Advancement of Science) are notable.Further ReadingObituary, 1889, Minutes of the Proceedings of the Institution of Civil Engineers 97:392– 8.Obituary, 1889, Proceedings of the Royal Society 46:xlii-xlviii. G.M.Binnie, 1981, Early Victorian Water Engineers, London.P.N.Wilson, 1973, "Kendal reservoirs", Transactions of the Cumberland and Westmorland Antiquarian and Archaeological Society 73.KM / LRDBiographical history of technology > Bateman, John Frederick La Trobe
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124 Beaumont, Huntingdon
SUBJECT AREA: Mining and extraction technology[br]b. c.1560 Coleorton (?), Leicestershire, Englandd. 1624 Nottingham, England[br]English speculator in coal-mining, constructor of the first surface railway in Britain.[br]Huntingdon Beaumont was a younger son of a landed family whose estates included coal-mines at Coleorton and Bedworth. From these, no doubt, originated his great expertise in coal-mining and mine management. His subsequent story is a complex one of speculation in coal mines: agreements, partnerships, and debts, and, in trying to extricate himself from the last, attempts to improve profitability, and ever-greater enterprises. He leased mines in 1601 at Wollaton, near Nottingham, and in 1603 at Strelley, which adjoins Wollaton but is further from Nottingham, where lay the market for coal. To reduce the transport cost of Strelley coal, Beaumont laid a wooden wagonway for two miles or so to Wollaton Lane End, the point at which the coal was customarily sold. In earlier times wooden railways had probably been used in mines, following practice on the European continent, but Beaumont's was the first on the surface in Britain. The market for coal in Nottingham being limited, Beaumont, with partners, attempted to send coal to London by water, but the difficult navigation of the Trent at this period made the venture uneconomic. With a view still to supplying London, c.1605 they took leases of mines near Blyth, north of Newcastle upon Tyne. Here too Beaumont built wagonways, to convey coal to the coast, but despite considerable expenditure the mines could not be made economic and Beaumont returned to Strelley. Although he worked the mine night and day, he was unable to meet the demands of his creditors, who eventually had him imprisoned for debt. He died in gaol.[br]Further ReadingR.S.Smith, 1957, "Huntingdon Beaumont. Adventurer in coal mines", Renaissance \& Modern Studies 1; Smith, 1960, "England's first rails: a reconsideration", Renaissance\& Modern Studies 4, University of Nottingham (both are well-researched papers discussing Beaumont and his wagonways).PJGR -
125 Harrison, John
[br]b. 24 March 1693 Foulby, Yorkshire, Englandd. 24 March 1776 London, England[br]English horologist who constructed the first timekeeper of sufficient accuracy to determine longitude at sea and invented the gridiron pendulum for temperature compensation.[br]John Harrison was the son of a carpenter and was brought up to that trade. He was largely self-taught and learned mechanics from a copy of Nicholas Saunderson's lectures that had been lent to him. With the assistance of his younger brother, James, he built a series of unconventional clocks, mainly of wood. He was always concerned to reduce friction, without using oil, and this influenced the design of his "grasshopper" escapement. He also invented the "gridiron" compensation pendulum, which depended on the differential expansion of brass and steel. The excellent performance of his regulator clocks, which incorporated these devices, convinced him that they could also be used in a sea dock to compete for the longitude prize. In 1714 the Government had offered a prize of £20,000 for a method of determining longitude at sea to within half a degree after a voyage to the West Indies. In theory the longitude could be found by carrying an accurate timepiece that would indicate the time at a known longitude, but the requirements of the Act were very exacting. The timepiece would have to have a cumulative error of no more than two minutes after a voyage lasting six weeks.In 1730 Harrison went to London with his proposal for a sea clock, supported by examples of his grasshopper escapement and his gridiron pendulum. His proposal received sufficient encouragement and financial support, from George Graham and others, to enable him to return to Barrow and construct his first sea clock, which he completed five years later. This was a large and complicated machine that was made out of brass but retained the wooden wheelwork and the grasshopper escapement of the regulator clocks. The two balances were interlinked to counteract the rolling of the vessel and were controlled by helical springs operating in tension. It was the first timepiece with a balance to have temperature compensation. The effect of temperature change on the timekeeping of a balance is more pronounced than it is for a pendulum, as two effects are involved: the change in the size of the balance; and the change in the elasticity of the balance spring. Harrison compensated for both effects by using a gridiron arrangement to alter the tension in the springs. This timekeeper performed creditably when it was tested on a voyage to Lisbon, and the Board of Longitude agreed to finance improved models. Harrison's second timekeeper dispensed with the use of wood and had the added refinement of a remontoire, but even before it was tested he had embarked on a third machine. The balance of this machine was controlled by a spiral spring whose effective length was altered by a bimetallic strip to compensate for changes in temperature. In 1753 Harrison commissioned a London watchmaker, John Jefferys, to make a watch for his own personal use, with a similar form of temperature compensation and a modified verge escapement that was intended to compensate for the lack of isochronism of the balance spring. The time-keeping of this watch was surprisingly good and Harrison proceeded to build a larger and more sophisticated version, with a remontoire. This timekeeper was completed in 1759 and its performance was so remarkable that Harrison decided to enter it for the longitude prize in place of his third machine. It was tested on two voyages to the West Indies and on both occasions it met the requirements of the Act, but the Board of Longitude withheld half the prize money until they had proof that the timekeeper could be duplicated. Copies were made by Harrison and by Larcum Kendall, but the Board still continued to prevaricate and Harrison received the full amount of the prize in 1773 only after George III had intervened on his behalf.Although Harrison had shown that it was possible to construct a timepiece of sufficient accuracy to determine longitude at sea, his solution was too complex and costly to be produced in quantity. It had, for example, taken Larcum Kendall two years to produce his copy of Harrison's fourth timekeeper, but Harrison had overcome the psychological barrier and opened the door for others to produce chronometers in quantity at an affordable price. This was achieved before the end of the century by Arnold and Earnshaw, but they used an entirely different design that owed more to Le Roy than it did to Harrison and which only retained Harrison's maintaining power.[br]Principal Honours and DistinctionsRoyal Society Copley Medal 1749.Bibliography1767, The Principles of Mr Harrison's Time-keeper, with Plates of the Same, London. 1767, Remarks on a Pamphlet Lately Published by the Rev. Mr Maskelyne Under theAuthority of the Board of Longitude, London.1775, A Description Concerning Such Mechanisms as Will Afford a Nice or True Mensuration of Time, London.Further ReadingR.T.Gould, 1923, The Marine Chronometer: Its History and Development, London; reprinted 1960, Holland Press.—1978, John Harrison and His Timekeepers, 4th edn, London: National Maritime Museum.H.Quill, 1966, John Harrison, the Man who Found Longitude, London. A.G.Randall, 1989, "The technology of John Harrison's portable timekeepers", Antiquarian Horology 18:145–60, 261–77.J.Betts, 1993, John Harrison London (a good short account of Harrison's work). S.Smiles, 1905, Men of Invention and Industry; London: John Murray, Chapter III. Dictionary of National Biography, Vol. IX, pp. 35–6.DV -
126 Sullivan, Louis Henry
SUBJECT AREA: Architecture and building[br]b. 3 September 1856 Boston, Massachusetts, USAd. 14 April 1924 Chicago, Illinois, USA[br]American architect whose work came to be known as the "Chicago School of Architecture" and who created a new style of architecture suited specifically to steel-frame, high-rise structures.[br]Sullivan, a Bostonian, studied at the Massachusetts Institute of Technology. Soon he joined his parents, who had moved to Chicago, and worked for a while in the office of William Le Baron Jenney, the pioneer of steel-frame construction. After spending some time studying at the Ecole des Beaux Arts in Paris, in 1875 Sullivan returned to Chicago, where he later met and worked for the Danish architect Dankmar Adler, who was practising there. In 1881 the two architects became partners, and during the succeeding fifteen years they produced their finest work and the buildings for which Sullivan is especially known.During the early 1880s in Chicago, load-bearing, metal-framework structures that made lofty skyscrapers possible had been developed (see Jenney and Holabird). Louis H.Sullivan initiated building design to stress and complement the metal structure rather than hide it. Moving onwards from H.H.Richardson's treatment of his Marshall Field Wholesale Store in Chicago, Sullivan took the concept several stages further. His first outstanding work, built with Adler in 1886–9, was the Auditorium Building in Chicago. The exterior, in particular, was derived largely from Richardson's Field Store, and the building—now restored—is of bold but simple design, massively built in granite and stone, its form stressing the structure beneath. The architects' reputation was established with this building.The firm of Sullivan \& Adler established itself during the early 1890s, when they built their most famous skyscrapers. Adler was largely responsible for the structure, the acoustics and function, while Sullivan was responsible for the architectural design, concerning himself particularly with the limitation and careful handling of ornament. In 1892 he published his ideas in Ornament in Architecture, where he preached restraint in its quality and disposition. He established himself as a master of design in the building itself, producing a rhythmic simplicity of form, closely related to the structural shape beneath. The two great examples of this successful approach were the Wainwright Building in St Louis, Missouri (1890–1) and the Guaranty Building in Buffalo, New York (1894–5). The Wainwright Building was a ten-storeyed structure built in stone and brick and decorated with terracotta. The vertical line was stressed throughout but especially at the corners, where pilasters were wider. These rose unbroken to an Art Nouveau type of decorative frieze and a deeply projecting cornice above. The thirteen-storeyed Guaranty Building is Sullivan's masterpiece, a simple, bold, finely proportioned and essentially modern structure. The pilaster verticals are even more boldly stressed and decoration is at a minimum. In the twentieth century the almost free-standing supporting pillars on the ground floor have come to be called pilotis. As late as the 1920s, particularly in New York, the architectural style and decoration of skyscrapers remained traditionally eclectic, based chiefly upon Gothic or classical forms; in view of this, Sullivan's Guaranty Building was far ahead of its time.[br]BibliographyArticle by Louis H.Sullivan. Address delivered to architectural students June 1899, published in Canadian Architecture Vol. 18(7):52–3.Further ReadingHugh Morrison, 1962, Louis Sullivan: Prophet of Modern Architecture.Willard Connely, 1961, Louis Sullivan as He Lived, New York: Horizon Press.DY -
127 Tesla, Nikola
SUBJECT AREA: Electricity[br]b. 9 July 1856 Smiljan, Croatiad. 7 January 1943 New York, USA[br]Serbian (naturalized American) engineer and inventor of polyphase electrical power systems.[br]While at the technical institute in Graz, Austria, Tesla's attention was drawn to the desirability of constructing a motor without a commutator. He considered the sparking between the commutator and brushes of the Gramme machine when run as a motor a serious defect. In 1881 he went to Budapest to work on the telegraph system and while there conceived the principle of the rotating magnetic field, upon which all polyphase induction motors are based. In 1882 Tesla moved to Paris and joined the Continental Edison Company. After building a prototype of his motor he emigrated to the United States in 1884, becoming an American citizen in 1889. He left Edison and founded an independent concern, the Tesla Electric Company, to develop his inventions.The importance of Tesla's first patents, granted in 1888 for alternating-current machines, cannot be over-emphasized. They covered a complete polyphase system including an alternator and induction motor. Other patents included the polyphase transformer, synchronous motor and the star connection of three-phase machines. These were to become the basis of the whole of the modern electric power industry. The Westinghouse company purchased the patents and marketed Tesla motors, obtaining in 1893 the contract for the Niagara Falls two-phase alternators driven by 5,000 hp (3,700 kW) water turbines.After a short period with Westinghouse, Tesla resigned to continue his research into high-frequency and high-voltage phenomena using the Tesla coil, an air-cored transformer. He lectured in America and Europe on his high-frequency devices, enjoying a considerable international reputation. The name "tesla" has been given to the SI unit of magnetic-flux density. The induction motor became one of the greatest advances in the industrial application of electricity. A claim for priority of invention of the induction motor was made by protagonists of Galileo Ferraris (1847–1897), whose discovery of rotating magnetic fields produced by alternating currents was made independently of Tesla's. Ferraris demonstrated the phenomenon but neglected its exploitation to produce a practical motor. Tesla himself failed to reap more than a small return on his work and later became more interested in scientific achievement than commercial success, with his patents being infringed on a wide scale.[br]Principal Honours and DistinctionsAmerican Institute of Electrical Engineers Edison Medal 1917. Tesla received doctorates from fourteen universities.Bibliography1 May 1888, American patent no. 381,968 (initial patent for the three-phase induction motor).1956, Nikola Tesla, 1856–1943, Lectures, Patents, Articles, ed. L.I.Anderson, Belgrade (selected works, in English).1977, My Inventions, repub. Zagreb (autobiography).Further ReadingM.Cheney, 1981, Tesla: Man Out of Time, New Jersey (a full biography). C.Mackechnie Jarvis, 1969, in IEE Electronics and Power 15:436–40 (a brief treatment).T.C.Martin, 1894, The Inventions, Researches and Writings of Nikola Tesla, New York (covers his early work on polyphase systems).GW -
128 Voelcker, John Christopher
SUBJECT AREA: Agricultural and food technology[br]b. 24 September 1822 Frankfurt am Main, Germanyd. 5 December 1884 England[br]German analytical chemist resident in England whose reports on feedstuffs and fertilizers had a considerable influence on the quality of these products.[br]The son of a merchant in the city of his birth, John Christopher had delicate health and required private tuition to overcome the loss of his early years of schooling. At the age of 22 he went to study chemistry at Göttingen University and then worked for a short time for Liebig at Giessen. In 1847 he obtained a post as Analyst and Consulting Chemist at the Agricultural Chemistry Association of Scotland's Edinburgh office, and two years later he became Professor of Chemistry at the Royal Agricultural College in Cirencester, retaining this post until 1862. In 1855 he was appointed Chemist to the Bath and West Agricultural Society, and in that capacity organized lectures and field trials, and in 1857 he also became Consulting Chemist to the Royal Agricultural Society of England. Initially he studied the properties of farmyard manure and also the capacity of the soil to absorb ammonia, potash and sodium. As Consulting Chemist to farmers he analysed feedstuffs and manures; his assessments of artificial manures did much to force improvements in standards. During the 1860s he worked on milk and dairy products. He published the results of his work each year in the Journal of the Royal Agricultural Society of England. In 1877 he became involved in the field trials initiated and funded by the Duke of Bedford on his Woburn farm, and he continued his association with this venture until his death.[br]Principal Honours and DistinctionsFRS. Founder and Vice-President, Institute of Chemistry of Great Britain and Northern Ireland 1877. Member Chemical Society 1849; he was a member of Council as well as its Vice-President at the time of his death. Member of the Board of Studies, Royal Agricultural College, Cirencester; Honorary Professor from 1882.BibliographyHis papers are to be found in the Journal of the Royal Agricultural Society of England, for which he began to write reports in 1855, and also in the Journal of the Bath and West Society.Further ReadingJ.H.Gilbert, 1844, obituary, Journal of the Royal Agricultural Society of England, pp. 308–21 (a detailed account).Sir E.John Russell, A History of Agricultural Science in Great Britain.See also: Voelcker, John AugustusAPBiographical history of technology > Voelcker, John Christopher
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