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1 rock
rock [rɒk]1 noun∎ the lighthouse is built on rock le phare est construit sur le roc;∎ a layer of rock une couche rocheuse∎ to run onto the rocks (ship) s'échouer sur des rochers;∎ figurative she was an absolute rock during the crisis elle nous a été d'un grand secours pendant cette épreuve;∎ figurative to be as solid as a rock être solide comme le roc;∎ figurative to see the rocks ahead anticiper les difficultés futures;∎ familiar to be on the rocks (person) être dans la dèche; (company) être en faillite□ ; (relationship, marriage) mal tourner□, tourner à la catastrophe□ ;∎ this time last year the firm seemed to be on the rocks l'an dernier à cette époque, l'entreprise semblait être au bord de la faillite;∎ to be between a rock and a hard place être pris entre deux feux, être entre le marteau et l'enclume;∎ rock and roll rock m (and roll)(d) (in place names) rocher m, roche f;∎ a stick of rock un bâton de sucre d'orge (parfumé à la menthe)∎ Rock of Ages Jésus-Christ∎ rocks (testicles) couilles fpl, boules fpl;∎ to get one's rocks off (have sex) baiser, s'envoyer en l'air; (have orgasm) prendre son pied, jouir; (enjoy oneself) s'éclater, prendre son pied;∎ to get one's rocks off doing sth s'éclater ou prendre son pied en faisant qch(film) rock (inv); (band, record, concert, guitarist) (de) rock (inv)∎ to rock a baby to sleep bercer un bébé pour l'endormir;∎ he rocked himself in the rocking chair il se balançait dans le fauteuil à bascule;∎ the boat was rocked by the waves (gently) le bateau était bercé par les flots; (violently) le bateau était ballotté par les vagues;∎ figurative to rock the boat jouer les trouble-fête, semer le trouble;∎ don't rock the boat ne fais pas de vagues;∎ now you've settled in, you must be careful not to rock the boat maintenant que tu es bien adapté, essaie de ne pas nous causer d'ennuis∎ the village was rocked by an explosion/an earthquake le village fut secoué par une explosion/un tremblement de terre;∎ the Government has been rocked by the latest sex scandal le gouvernement a été secoué par la dernière histoire de mœurs;∎ she was rocked by the news elle a été bouleversée par la nouvelle∎ to rock on a chair se balancer sur une chaise;∎ to rock with laughter se tordre de rire(b) (building, ground) trembler∎ his new girlfriend really rocks! sa nouvelle copine est vraiment géniale!;∎ the party was really rocking (animated) il y avait une ambiance d'enfer à la soirée5 adverb∎ (idiom) to hit rock bottom (person, morale) avoir le moral à zéro, toucher le fond; (firm, funds) atteindre le niveau le plus bas►► Ichthyology rock bass achigan m de roche;rock boots chaussures fpl d'escalade;Zoology rock borer pholade f;American rock candy sucre m d'orge;familiar rock chick mordue f de hard rock;rock climber varappeur(euse) m,f;rock climbing escalade f (de rochers), varappe f;∎ to go rock climbing faire de l'escalade ou de la varappe;rock crystal cristal m de roche;American Building industry rock dash crépi m;Ornithology rock dove (pigeon m) biset m;rock face paroi f rocheuse;rock garden (jardin m de) rocaille f;Ornithology rock hopper gorfou m, manchot m sauteur;American familiar rock hound (professional) géologue□ mf; (amateur) collectionneur(euse) m,f de pierres□ ;Zoology rock lobster langouste f;American, Australian & New Zealand rock melon cantaloup m;rock music rock m;rock oil pétrole m;Ornithology rock partridge bartavelle f;Ornithology rock pigeon (pigeon m) biset m;Ornithology rock pipit pipit m maritime, pipit m obscur;Botany rock plant plante f de rocaille;rock pool flaque f dans les rochers;Botany rock rose hélianthème m;Ichthyology rock salmon roussette f;rock salt sel m gemme;Ornithology rock sparrow moineau m soulcie;rock star rock star f;Ornithology rock thrush merle m de roche;blue rock thrush merle m bleu;Building industry rock wool laine f minérale -
2 Smeaton, John
SUBJECT AREA: Civil engineering, Mechanical, pneumatic and hydraulic engineering, Steam and internal combustion engines[br]b. 8 June 1724 Austhorpe, near Leeds, Yorkshire, Englandd. 28 October 1792 Austhorpe, near Leeds, Yorkshire, England[br]English mechanical and civil engineer.[br]As a boy, Smeaton showed mechanical ability, making for himself a number of tools and models. This practical skill was backed by a sound education, probably at Leeds Grammar School. At the age of 16 he entered his father's office; he seemed set to follow his father's profession in the law. In 1742 he went to London to continue his legal studies, but he preferred instead, with his father's reluctant permission, to set up as a scientific instrument maker and dealer and opened a shop of his own in 1748. About this time he began attending meetings of the Royal Society and presented several papers on instruments and mechanical subjects, being elected a Fellow in 1753. His interests were turning towards engineering but were informed by scientific principles grounded in careful and accurate observation.In 1755 the second Eddystone lighthouse, on a reef some 14 miles (23 km) off the English coast at Plymouth, was destroyed by fire. The President of the Royal Society was consulted as to a suitable engineer to undertake the task of constructing a new one, and he unhesitatingly suggested Smeaton. Work began in 1756 and was completed in three years to produce the first great wave-swept stone lighthouse. It was constructed of Portland stone blocks, shaped and pegged both together and to the base rock, and bonded by hydraulic cement, scientifically developed by Smeaton. It withstood the storms of the English Channel for over a century, but by 1876 erosion of the rock had weakened the structure and a replacement had to be built. The upper portion of Smeaton's lighthouse was re-erected on a suitable base on Plymouth Hoe, leaving the original base portion on the reef as a memorial to the engineer.The Eddystone lighthouse made Smeaton's reputation and from then on he was constantly in demand as a consultant in all kinds of engineering projects. He carried out a number himself, notably the 38 mile (61 km) long Forth and Clyde canal with thirty-nine locks, begun in 1768 but for financial reasons not completed until 1790. In 1774 he took charge of the Ramsgate Harbour works.On the mechanical side, Smeaton undertook a systematic study of water-and windmills, to determine the design and construction to achieve the greatest power output. This work issued forth as the paper "An experimental enquiry concerning the natural powers of water and wind to turn mills" and exerted a considerable influence on mill design during the early part of the Industrial Revolution. Between 1753 and 1790 Smeaton constructed no fewer than forty-four mills.Meanwhile, in 1756 he had returned to Austhorpe, which continued to be his home base for the rest of his life. In 1767, as a result of the disappointing performance of an engine he had been involved with at New River Head, Islington, London, Smeaton began his important study of the steam-engine. Smeaton was the first to apply scientific principles to the steam-engine and achieved the most notable improvements in its efficiency since its invention by Newcomen, until its radical overhaul by James Watt. To compare the performance of engines quantitatively, he introduced the concept of "duty", i.e. the weight of water that could be raised 1 ft (30 cm) while burning one bushel (84 lb or 38 kg) of coal. The first engine to embody his improvements was erected at Long Benton colliery in Northumberland in 1772, with a duty of 9.45 million pounds, compared to the best figure obtained previously of 7.44 million pounds. One source of heat loss he attributed to inaccurate boring of the cylinder, which he was able to improve through his close association with Carron Ironworks near Falkirk, Scotland.[br]Principal Honours and DistinctionsFRS 1753.Bibliography1759, "An experimental enquiry concerning the natural powers of water and wind to turn mills", Philosophical Transactions of the Royal Society.Towards the end of his life, Smeaton intended to write accounts of his many works but only completed A Narrative of the Eddystone Lighthouse, 1791, London.Further ReadingS.Smiles, 1874, Lives of the Engineers: Smeaton and Rennie, London. A.W.Skempton, (ed.), 1981, John Smeaton FRS, London: Thomas Telford. L.T.C.Rolt and J.S.Allen, 1977, The Steam Engine of Thomas Newcomen, 2nd edn, Hartington: Moorland Publishing, esp. pp. 108–18 (gives a good description of his work on the steam-engine).LRD -
3 Stevenson, Robert
[br]b. 8 June 1772 Glasgow, Scotlandd. 12 July 1850 Edinburgh, Scotland[br]Scottish lighthouse designer and builder.[br]After his father's death when he was only 2 years old, Robert Stevenson was educated at a school for children from families in reduced circumstances. However, c. 1788 his mother married again, to Thomas Smith, Engineer to the Northern Lighthouse Board. Stevenson then served an apprenticeship under his new stepfather. The Board, which is still an active force in the 1990s, was founded in 1786 to oversee the lights and buoyage in some of the wildest waters in Western Europe, the seas around the coasts of Scotland and the Isle of Man.After studies at Andersen's College (now the University of Strathclyde) and later at Edinburgh University, Stevenson assumed responsibility in the field for much of the construction work sanctioned by the Board. After some years he succeeded Smith as Engineer to the Board and thereby the long connection between the Northern Lights and the Stevenson family commenced.Stevenson became Engineer to the Board when he was about 30 years old, remaining in that office for the best part of half a century. During these years he improved catoptric lighting, adopted the central lamp refracting system and invented the intermittent flashing light. While these developments were sufficient to form a just memorial to the man, he was involved in greater endeavours in the construction of around twenty lighthouses, most of which had ingenious forms of construction. The finest piece was the Bell Rock Lighthouse, built on a reef off the Scottish East Coast. This enterprise took five years to complete and can be regarded as the most important construction of his life.His interests fitted in with those of the other great men living in and around Edinburgh at the time, and included oceanography, astronomy, architecture and antiquarian studies. He designed several notable bridges, proposed a design for the rails for railways and also made a notable study of marine timber borers. He contributed to Encyclopaedia Britannica and to many journals.His grandson, born in the year of his death, was the famous author Robert Louis Stevenson (1850–94).[br]Principal Honours and DistinctionsFRS Edinburgh.Further ReadingSir Walter Scott, 1982, Northern Lights, Hawick.FMW
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