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81 Ridley, Nicholas Harold Lloyd
SUBJECT AREA: Medical technology[br]b. 10 July 1906 Leicester, England[br]English ophthalmic surgeon, pioneer of intra-ocular lens implants.[br]Following a medical education at Cambridge and St Thomas's Hospital, London, he was appointed at an early age to the post of Surgeon to Moorfields Eye Hospital (Royal London Ophthalmic Hospital). During the Second World War he served abroad in Africa as an ophthalmic specialist and became an authority on onchocerciasis (river blindness) and filiariasis.His experience of the inertness of plastic material retained inside the eye in injured aircraft personnel led him to investigate the possibility of replacing cataractous lenses with intra-ocular plastic lenses. After his appointment as Consultant Ophthalmologist to St Thomas's in 1946, the first lens implant procedure was successfully carried out in 1949. The implantation of glass lenses in the treatment of myopia had been attempted in Germany at the end of the nineteenth century, but the weight of the material had militated against a successful outcome.It was some time before the new procedure, which owed much to his surgical dexterity, became widely accepted, but the work of Strampelli, Binkhorst and others led to its wider application; intra-ocular implants are now a standard element of the surgical treatment of cataract.[br]Principal Honours and DistinctionsFRS 1986. Royal Society Galen Medal 1986; Crook Gold Medal 1988.Bibliography1951, "Intraocular acrylic lenses", Trans. Ophth. Soc. UK.1964, "Intraocular lenses—past, present and future", Trans. Ophth. Soc. UK.Further ReadingS.Duke-Elder, 1969, System of Ophthalmology, Vol. 9, London.MGBiographical history of technology > Ridley, Nicholas Harold Lloyd
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82 Webb, Francis William
[br]b. 21 May 1836 Tixall, Staffordshire, Englandd. 4 June 1906 Bournemouth, England[br]English locomotive engineer who pioneered compound locomotives in Britain and the use of steel for boilers.[br]Webb was a pupil at Crewe Works, London \& North Western Railway (LNWR), under F. Trevithick (son of Richard Trevithick), and was subsequently placed in charge of the works under Trevithick's successor, J.Ramsbottom. After a brief spell away from the LNWR, Webb returned in 1871 and was made Chief Mechanical Engineer, a post he held until his retirement in 1904.Webb's initial designs included the highly successful "Precedent" or "Jumbo" class 2– 4–0, from which the example Hardwicke (now preserved by the National Railway Museum, York) achieved an average speed of 67.2 mph (108.1 km/h) between Crewe and Carlisle in 1895. His 0–6–0 "coal engines" were straightforward and cheap and were built in large numbers. In 1879 Webb, having noted the introduction of compound locomotives in France by J.T.A. Mallet, rebuilt an existing 2–2–2 locomotive as a two-cylinder compound. Then in 1882, seeking fuel economy and the suppression of coupling rods, he produced a compound locomotive to his own design, the 2–2, 2–0 Experiment, in which two outside high-pressure cylinders drove the rear driving-wheels, and a single inside large-diameter low-pressure cylinder drove the front driving-wheels. This was followed by a large number of compound locomotives: three successive classes of 2–2, 2–0s; some 2–2, 2–2s; some 4–4–0s; and some 0–8–0s for goods traffic. Although these were capable of good performance, their overall value was controversial: Webb, who was notoriously autocratic, may never have been fully informed of their defects, and after his retirement most were quickly scrapped. Webb made many other innovations during his career, one of the most important being the construction of boilers from steel rather than wrought iron.[br]Further ReadingC.Hamilton Ellis, 1958, Twenty Locomotive Men, Shepperton: Ian Allan, Ch. 14 (describes Webb's career).E.L.Ahrons, 1927, The British Steam Railway Locomotive 2825–1925, London: The Locomotive Publishing Co., Chs 18 and 20 (includes a critique of Webb's compound locomotives).PJGR -
83 der Innenpfosten
mthe inside of the post [football] -
84 وضع
وَضَعَ \ label: to put a label on (sth.): The box was labelled ‘Glass - with care’. \ See Also أَلْصَق بطاقة على \ وَضَعَ \ clamp: to hold with a clamp; put in a clamp. \ See Also ثَبَّتَ في مِلزَمَة \ وَضَعَ (مثلاً: خَلَعَ ملابسه بسُرْعة، دَسّ فلوسًا في جيبي، إلخ) \ slip: to put or move (sth.) with a quick, easy movement: He slipped his coat off. I slipped the money into my pocket. \ See Also حَرَّكَ بِسُرْعَة وخِفَّة \ وَضَعَ \ plan: to make plans for (sth. in) the future (a journey, a new house, etc.): She planned her day’s work so that she would have some time free in the afternoon. \ See Also رَسمَ خُطَّة \ وَضَعَ بين قوسين (في الكتابة) \ bracket: to put brackets round (a word). \ وَضَعَ حِجابًا \ veil: to cover with a veil (see حِجَاب). \ وَضَعَ حَدًّا لِـ \ draw the line: to fix a limit to what can be allowed: I don’t mind your keeping rabbits, but I draw the line at rats (I cannot allow them). break off: to stop suddenly: He broke off and looked at his watch. put: used in various special ways with a noun that is related to a verb: Put a stop to it (stop it). \ وَضَعَ داخل \ enclose: to put (sth.) inside sth. else: I enclosed some money in my letter. \ وَضَعَ رَسْمًا تَخْطِيطيًّا \ sketch: to draw a sketch (of): I sketched the old castle. \ وَضَعَ علامة \ mark: to put (a special sign) on (sth.): The price was marked on the goods. \ وَضَعَ في الجيب \ pocket: to put into one’s pocket (often dishonestly): He pocketed the money and told nobody. \ See Also استولى خُلسةً على \ وَضَعَ في حِسابِه \ allow for: to provide for; take into consideration: I’ve allowed enough time for a meal on the way. We must allow for possible delays. \ وَضَعَ في عبارة أخْرى \ reword: to express in other words: This sentence needs rewording more politely. \ وَضَعَ في غير مَوْضِعِه \ mislay, (mislaid): to be unable to find sth., having forgotten where one put it: I’ve mislaid my shopping list - have you seen it?. \ وَضَعَ في مكان ما \ station: to place (a government servant, a soldier or a group of them) somewhere: Soldiers are often stationed along a border with an unfriendly country. \ وَضَعَ في مِلَفّ أو إضْبَارة \ file: to put (a paper) in a file: Business letters are usually filed. \ وَضَعَ في موقع أو مركز \ post: to put (sb.) in a place of duty: I posted two men to watch the entrance. \ وَضَعَ قائمًا (أَوْقَفَ أو أَقْعَدَ) \ stand, stood: (of upright things) to place, in a certain position: He stood his gun against the wall. \ وَضَعَ نُصْبَ عينيه \ bear in mind: to keep in one’s mind; remember: I will bear your needs in mind when I make my report. \ وَضَعَ حدًّا لِـ \ bring (sth.) to an end: to cause sth. to end: The rain brought the game to an end. \ وَضَعَ يده على \ lay hands on: to seize: He will steal anything that he can lay hands on.
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