1. Barlow Peter Barlow. Chronology 1810 to 1820. Honours awarded to Peter Barlow (Clicka link below for the full list of mathematicians honoured in this way). http://www-gap.dcs.st-and.ac.uk/~history/Mathematicians/Barlow.html

Peter Barlow Born: 15 Oct 1776 in Norwich, England Died: 1 March 1862 in Kent, England Click the picture above to see two larger pictures Show birthplace location Previous (Chronologically) Next Biographies Index Previous (Alphabetically) Next Main index Peter Barlow was self-educated but this education was sufficiently good that he was able to compete successfully to became an assistant mathematics master at the Royal Military Academy at Woolwich. He was appointed to the post in 1801 and he began publishing mathematical articles in the Ladies Diary and he became sufficiently well established as a leading authority on mathematics that after a while he was asked to contribute various articles on mathematics for encyclopaedias. In addition to these articles, Barlow also published several important books, for example in 1811 he published An elementary investigation of the theory of numbers and three years later he published A new mathematical and philosophical dictionary. He is remembered most for two important contributions. In 1814 he produced a second book, in addition to the one described above, entitled New mathematical tables.

2. Quotation By Peter Barlow Peter Barlow (1776 1862). 2 30 (2 31 -1) is the greatest perfect numberthat will ever be discovered, for, as they are merely curious http://www-gap.dcs.st-and.ac.uk/~history/Quotations2/301.html

Peter Barlow -1) is the greatest perfect number that will ever be discovered, for, as they are merely curious without being useful, it is not likely that any person will attempt to find a number beyond it. Quoted in D MacHale, Comic Sections (Dublin 1993)

3. Peter Barlow Peter Barlow. Full name Peter Barlow Parents Ken and Valerie BarlowBorn 15 April 1965 Siblings Susan Ida (elder twin); Daniel http://www.corrie.net/profiles/characters/barlow_peter.html

Peter Barlow Full name: Peter Barlow Parents: Ken and Valerie Barlow Born: 15 April 1965 Siblings: Susan Ida (elder twin) Daniel Osbourne b: 4 January 1995 - half-brother (same father) Married: Jessica Children: Played by: John Heanneau Mark Duncan Linus Roache Christopher Dormerr Joseph McKenna (22 August 1977 - 25 October 1978) David Lonsdale Chris Gascoine (8 December 2000 - ) First appeared: After his mother's death, Peter lived in Glasgow with his maternal grandparents, but came down to Weatherfield to see his father from time to time - curiously his appearance altered each time ! He now serves in the Navy Can you update or amend this profile? Let us know Want to send some general mail to corrie.net? mailbox@corrie.net Back to Characters index ... corrie.net

4. Recherche Inventeur - Invention barlow peter en 0.106 s. Ø Site(s)trouvé(s) 1 à 1. 789. Titre barlow peter, Date ( ), Classé 3. http://www.awake2life.com/ericc/phpmyannu/search.php3?mots=Barlow Peter&and=0

5. WIEM: Barlow Peter barlow peter (17761862), angielski matematyk i fizyk. Uwaany za twórc prototypu silnika elektrycznego. http://www.encyklopedia.pl/wiem/002fce.html

WIEM 2004 - zobacz now± edycjê encyklopedii! Kup abonament i encyklopediê na CD-ROM, sprawd¼ ofertê cenow±! Oferta specjalna abonamentów dla szkó³ i instytucji! Uwaga! Przedstawione poni¿ej has³o pochodzi z archiwalnej edycji WIEM 2001! Prace redakcyjne nad edycj± 2001 zosta³y zakoñczone. Zapraszamy do korzystania z nowej, codziennie aktualizowanej i wzbogacanej w nowe tre¶ci edycji WIEM 2004 Technika, Fizyka, Wielka Brytania Barlow Peter Barlow Peter (1776-1862), angielski matematyk i fizyk. Uwa¿any za twórcê prototypu silnika elektrycznego WIEM zosta³a opracowana na podstawie Popularnej Encyklopedii Powszechnej Wydawnictwa Fogra zobacz wszystkie serwisy do góry

6. E-History - Barlow Peter Nazad na startnu stranicu, TOTOP KOMPENDIUM HISTORIJA ELEKTRONIKE BarlowPeter, Cavkic Salih, Nauka i tehnika, da se podsjecaju. barlow peter. http://users.skynet.be/orbus/e-history/barlow.htm

TOTOP KOMPENDIUM HISTORIJA ELEKTRONIKE Barlow Peter Indokti discant et ament meminisse periti. Oni koji ne znaju neka uce, a koji znaju neka nalaze zadovoljstvo u tome da se podsjecaju. Barlow Peter Alesandro Volta Hans C. Oerstedt Charles Coulomb Andre M. Ampere ... Historija telegrafije Lenca (leæe) Barlow Peter - Fizièar Barlov je 1831 godine eksperimentirao punom parom da bi pretvorio elektriènu snagu u mehanièku snagu. Salih Èavkiæ Historija elektronike - History of Electronics Any copying or reproduction without permission is strictly prohibited Svaka vrsta reprodukcije i kopiranja bez izrièite dozvole strogo je zabranjena! Page Construction: - Last modified:

7. Peter Barlow - Wikipedia, The Free Encyclopedia Peter Barlow. From Wikipedia, the free encyclopedia. Peter Barlow. Peter Barlow(1776 March 1, 1862) was an English writer on pure and applied mathematics. http://en.wikipedia.org/wiki/Peter_Barlow

Peter Barlow From Wikipedia, the free encyclopedia. Peter Barlow Peter Barlow March 1 ) was an English writer on pure and applied mathematics Barlow was born in Norwich . In 1806 he was appointed mathematical master in the Royal Military Academy in Woolwich , south-east London, and he filled that post for 41 years. In 1823 he was made a fellow of the Royal Society , and two years later received the Copley medal . Steam locomotion received much attention at his hands, and he sat on the railway commissions of 1836, 1839, 1842 and 1845. His sons Peter W. Barlow and William Henry Barlow became notable civil engineers of the 19th century He received many distinctions from British and foreign scientific societies. Barlow’s principal works are: Elementary Investigation of the Theory of Numbers New Mathematical and Philosophical Dictionary Essay on Magnetic Attractions The investigations on magnetism led to the important practical discovery of a means of rectifying or compensating compass errors in ships. Besides compiling numerous useful tables, he contributed largely to the Encyclopaedia Metropolitana Views Article Discussion Edit History Personal tools Log in Navigation Main Page Community portal Current events Recent changes ... Donations Search Toolbox What links here Related changes Special pages This page was last modified 13:45, 22 Mar 2004.

8. Peter W. Barlow - Wikipedia, The Free Encyclopedia Peter W. Barlow. He was the son of an engineer and mathematician, professor PeterBarlow of the Royal Military Academy in Woolwich, southeast London. http://en.wikipedia.org/wiki/Peter_W._Barlow

Peter W. Barlow From Wikipedia, the free encyclopedia. AAAA Peter William Barlow 19 May ) was an English civil engineer particularly associated with bridges (he designed the first Lambeth Bridge , a crossing of the River Thames in London ), the design of tunnels and the development of tunnelling techniques. He was the son of an engineer and mathematician, professor Peter Barlow of the Royal Military Academy in Woolwich , south-east London. His brother William Henry Barlow was a noted 19th century railway engineer. While designing the piers of Lambeth Bridge (a suspension bridge design since replaced by the current structure) in , Peter W. Barlow experimented with driving iron cylinders into the clay upon which much of central and north London sits. It was this experience that prepared him to work with James Henry Greathead on the development of a tunnelling shield to dig the Tower Subway in Views Article Discussion Edit History Personal tools Log in Navigation Main Page Community portal Current events Recent changes ... Donations Search Toolbox What links here Related changes Special pages This page was last modified 10:58, 28 May 2004.

9. Peter W. Barlow - Encyclopedia Article About Peter W. Barlow. Free Access, No Re encyclopedia article about Peter W. Barlow. Peter W. Barlow in Free onlineEnglish dictionary, thesaurus and encyclopedia. Peter W. Barlow. http://encyclopedia.thefreedictionary.com/Peter W. Barlow

Dictionaries: General Computing Medical Legal Encyclopedia Peter W. Barlow Word: Word Starts with Ends with Definition Peter William Barlow Centuries: 18th century - 19th century - 20th century Decades: 1750s 1760s 1770s 1780s 1790s - Years: 1804 1805 1806 1807 1808 - Events First running of the Two Thousand Guineas Stakes horse race in England. January 16 - Peninsular War: The British defeat the French at the Battle of Corunna. Click the link for more information. 19 May May 19 is the 139th day of the year in the Gregorian calendar (140th in leap years). There are 226 days remaining. Events 1535 - French explorer Jacques Cartier sets sail for his second voyage to North America with 3 ships, 110 men, and Chief Donnacona's 2 sons (who Cartier kidnapped during his first voyage). 1536 - Anne Boleyn, the second wife of Henry VIII of England is beheaded for adultery. Click the link for more information. Centuries: 18th century - 19th century - 20th century Decades: 1830s 1840s 1850s 1860s 1870s - Years: 1880 1881 1882 1883 1884 - This is a common year starting on Thursday (click on link for calendar) Events January 4 - The first successful appendectomy is performed (Dr. William Grant; patient was Mary Gartside).

10. Barlow Peter Barlow b. October 13, 1776, Norwich, England d. March 1, 1862, Woolwich,England. Peter Barlow was born at Norwich on October 13, 1776. http://chem.ch.huji.ac.il/~eugeniik/history/barlow.html

Peter Barlow b. October 13, 1776, Norwich, England d. March 1, 1862, Woolwich, England English mathematician and engineer Peter Barlow investigated areas of mathematics, physical sciences and engineering in the first half of the nineteenth century including: railway technology, number theory, astronomical optics, electromagnetism and strengths of materials. He invented two varieties of achromatic (non-colour-distorting) telescope lenses known as Barlow lenses. In 1819, Barlow began work on the problem of deviation in ship compasses caused by the presence of iron in the hull. For his method of correcting the deviation by juxtaposing the compass with a suitably shaped piece of iron, he was awarded the Copley Medal. He also designed in 1822 one of the first models of an electric motor supplied by continuous current. Peter Barlow was born at Norwich on October 13, 1776. The events during his first years of his life are quite unknown. It is known that he kept a school and gained some scientific knowledge. He became a correspondent to the 'Ladies' Diary', then under the management of a Dr. Hutton, professor of mathematics at Woolwich. By his advice Barlow sought and obtained the post of assistant mathematical master in 1801. He was promoted to the post of professor of mathematics in the Royal Military Academy, Woolwich. His position brought him access to the arsenal, foundry and dockyard for his experiments and allowed Barlow contact with colleagues with similar interests. Barlow was one of a group including Edward Sabine, Charles Babbage, John Herschel, and Michael Faraday interested in magnetic and geomagnetic subjects.

11. Albanian Grammar: Albanian Verbs Explained Peter J Barlow Author or Artist Peter J Barlow. Title Albanian Grammar Albanian Verbs Explainedbarlow peter J Peter J. Barlow Subject Albanian Format Paperback http://www.ggrugby.co.uk/Peter-J-Barlow-Albanian-Grammar-Albania-275-497-654-5.h

Albanian Grammar: Albanian Verbs Explained Peter J Barlow Author or Artist : Peter J Barlow Title: Albanian Grammar: Albanian Verbs Explained Barlow Peter J Peter J. Barlow Subject: Albanian Format: Paperback Towards Greater Heights: Aspects of the Spirituality of St.John of the Cross... Sebastian Beaumont-On the Edge... Jack Dickson-Oddfellows... Jack Dickson-Crossing Jordan... ... Wilkie Collins-Classic Short Stories: Wilkie Collins (Clasic Short Stories)...

12. Barlow Peter Barlow. Born 15 Peter Barlow was selfeducated and became a mathematicsmaster at the Royal Military Academy at Woolwich. He is http://intranet.woodvillehs.sa.edu.au/pages/resources/maths/History/Brlw.htm

Peter Barlow Born: 15 Oct 1776 in Norwich, England Died: 1 March 1862 in Kent, England Show birthplace location Previous (Chronologically) Next Biographies Index Previous (Alphabetically) Next Welcome page Peter Barlow was self-educated and became a mathematics master at the Royal Military Academy at Woolwich. He is remembered most for two important contributions. In 1814 he produced Barlow's Tables which give factors, squares, cubes, square roots, reciprocals and hyperbolic logs of all numbers from 1 to 10 000. This was greatly used until made completely obsolete by calculators. His second major contribution makes his name still well known by amateur astronomers. He invented the Barlow lens, a telescope lens consisting of a colourless liquid between two pieces of glass. In his lifetime Barlow's greatest achievement was being elected to the Royal Society and receiving its Copley medal for his work on magnetism. References (3 books/articles) A quotation by Peter Barlow References elsewhere in this archive: Peter Barlow was elected to the Royal Society of London in 1823. You can see a

13. Carlisle Photography, For Photography In Carlisle barlow peter 97 Wigton Rd Carlisle, CA2 7EP, 01228 409407. barlow peter StudiosUnit 1/James Street Workshop/James St Carlisle, CA2 5AH, 01228 538633. http://www.city-visitor.com/carlisle/photography.html

Home Carlisle Special Occasion Photography in Carlisle Whether you require a photographer for a special occasion or you’re looking to buy a camera, Carlisle covers all your photography needs. See what Carlisle has to offer for Pictures, Photos, Portraits, Photographers etc. Your city-visitor guide to help you decide where to visit. google_ad_client = "pub-1797344224197328";google_ad_width = 728;google_ad_height = 90;google_ad_format = "728x90_as";google_color_border = "336699";google_color_bg = "333366";google_color_link = "FFFFFF";google_color_url = "33CCFF";google_color_text = "66CCFF"; Barlow Peter 97 Wigton Rd Carlisle, CA2 7EP [Update details] Barlow Peter Studios Unit 1/James Street Workshop/James St Carlisle, CA2 5AH [Update details] Bell P 170 Lansdowne Cres Carlisle, CA3 9ER [Update details] Brown L W 4 Fisher St Carlisle, CA3 8RN [Update details] Carol Kershaw Photography Beck La Brampton, CA8 1NF [Update details] Central Studios 20 Devonshire St Carlisle, CA3 8LP [Update details] Creative Edge 150 Wigton Rd Carlisle, CA2 7ET

14. Peter W. Barlow Peter W. Barlow. On byl syn technika a matematik, profesor Peter BarlowKrálovská vojenská akademie v Woolwich, Londýn jihovýchodu. http://wikipedia.infostar.cz/p/pe/peter_w__barlow.html

švodn­ str¡nka Tato str¡nka v origin¡le Peter W. Barlow Peter William Barlow 19 května ) byl Angličtina stavebn­ inžen½r zvl¡Å¡tě přidružen½ s mosty (on navržen½ prvn­ Lambeth most , kř­Å¾en­ řeky Temže v Lond½n ), design tunely a rozvoj metod tunelov¡n­. On byl syn technika a matematik, profesor Peter Barlow Kr¡lovsk¡ vojensk¡ akademie v Woolwich , Lond½n jihov½chodu. Jeho bratr William Henry Barlow byl zn¡m½ 19th stolet­ železnice inžen½r. Zat­mco navrhovat mola Lambetha most ( visut½ most design protože nahrazen½ aktu¡ln­ strukturou) v , Peter W. Barlow experimentoval s hnac­mi železn½mi hranoly do kaolinu na kter©m hodně z centr¡ln­ho a severn­ho Lond½na sed­. To bylo tato praxe, kter¡ připravovala jej pracovat s James Henry Greathead na rozvoji tunelovac­ Å¡t­t kopat Podchod věže v Toto je strojov½ překlad čl¡nku z encyklopedie Wikipedia poř­zen½ překladačem Eurotran . Cel½ text je dostupn½ za podm­nek GNU FDL licence

15. WORKINGTON 1959/60 - 1976/77 BANKS Eric, W, 6773, Jnrs. Netherfield, 29, 1. barlow peter, F, 68-70, ColchesterUnited, Hartlepool, 42, 11. BLANT Colin, CD, 76-77, Grimsby Town, Horwich RMI,21, 0. http://www.neilbrown.newcastlefans.com/workington/workington.htm

WORKINGTON : 1959/60 - 1976/77 NAME POS. SEASONS SOURCE TRANSFERRED TO APPS GLS AITKEN George CH Middlesbrough Trainer Workington ANDERS Harry W Accrington Stanley Runcorn ASHWORTH Phil F Bournemouth Southport BANKS Eric W Jnrs. Netherfield BARLOW Peter F Colchester United Hartlepool BLANT Colin CD Grimsby Town Horwich R.M.I. BOOTH Ken IF Bradford Park Avenue Southport BOWRON Ken F Berwick Rangers Berwick Rangers BOYD Stuart (Am.) FB Jnrs. BRADBURY Bill IF Bury Southport BRADLEY David F Silcoms BRAYTON Barry F Carlisle United Netherfield BROOMFIELD Ian F Stockport County East London Utd. (S.Africa) BROWN Bobby D Jnrs. Penrith BROWN Bobby FB Motherwell BROWNLEE Tom CF York City Netherfield BURKINSHAW Keith WH Liverpool Scunthorpe United BURRIDGE John G App. Blackpool BUTLER Dave W On loan from Shrewsbury Town BUTLER Dave FB Stockton Watford BYERS Richard (Am.) CF Hadrian Paints CARR Dave IF Darlington Watford CHAPMAN John D Stockton Reading COLEMAN Eddie M On loan from Middlesbrough COMMONS Mike CF Lincoln City Chesterfield COPELAND Phil CH CURRIE Jim F Exeter City CURRIE John WH (Leicester City) Chester DAVIDSON Brian (Am.)

16. HARTLEPOOL UNITED 1959/60 - 2002/03 BARKER Mickey, FB, 8284, Bishop Auckland (ex Gillingham), BishopAuckland, 60, 1. barlow peter, F, 70-71, Workington, Stafford Rangers,11, 0. http://www.neilbrown.newcastlefans.com/hartlepool/hartlepool.htm

HARTLEPOOL UNITED : 1959/60 - 2002/03 NAME POS. SEASONS SOURCE TRANSFERRED TO APPS GLS ADAMSON Terry FB Luton Town Murton AINSLEY Jason M Spennymoor United Spennymoor United ALLEN Ken (Am.) G Jnrs. Hellenic (S. Africa) ALLINSON Jamie CD YT Guisborough Town ALLON Joe (1st spell) F Swansea City Chelsea ALLON Joe (2nd spell) F Lincoln City Retired (injury) ANDERSON Bill WH Barnsley ASHURST Len FB Sunderland Mgr. Gillingham ASHWORTH Barry WH Southend United Tranmere Rovers ASPIN Neil CD Darlington Harrogate Town ASTON Stan CH Burton Albion Nuneaton Borough ATKINSON Charlie CH Eppleton C.W. Washington ATKINSON Dave W App. Charlton Athletic ATKINSON Paddy FB (Sheffield United - YT) Gateshead ATKINSON Paul W On loan from Port Vale AYRE Billy CD Scarborough Halifax Town BAINBRIDGE Terry CD Henry Smith B.C. Peterlee BAKER Paul (1st spell) F Carlisle United Motherwell BAKER Paul (2nd spell) F Scunthorpe United Carlisle United BAKER Steve D On loan from Middlesbrough BANNISTER Neville W Lincoln City Rochdale BARKER Mickey FB Bishop Auckland (ex Gillingham) Bishop Auckland BARLOW Peter F Workington Stafford Rangers BARRAS Tony CD YT Stockport County BARRATT Tony FB Grimsby Town York City BARRON Micky (1st spell) CD On loan from Middlesbrough BARRY-MURPHY Brian M On loan from Preston North End BASSETT Graham F (Sunderland - App.)

17. Peter Barlow - Taos Artitst Of The Month In the skilled hands of craftsman peter barlow a pair of entry doors are transformed into artful and which is managed by Gayle barlow, peter's wife. Here visitors will find http://www.taosnewmexico.com/resources/ARTISTpeter_barlow.html

Dreamcatcher Real Estate Resources! Staff Construction ... Contact/Brochure About Taos At A Glance History Map Real Estate ... Other Information Culture Artist of the Month Arts Fine Taos Art For Sale Collector's Corner ... Fairs and Festivals Living Dining In/Out Shopping Recreation Entertainment ... Casinos Visiting Lodging Reservation Companies Other Resources Realtors in Other Communities ARTIST OF THE MONTH - May 2000: Peter Barlow by Lynn Worth (to see past Artists of the Month, please see our Artist Archive I n the skilled hands of craftsman Peter Barlow a pair of entry doors are transformed into artful and dramatic statements. Barlow makes his elegant creations from planks of Ponderosa pine, hickory and mahogany in a well equipped, 2,500 square foot workshop located in Talpa, southeast of Taos. "I specialize in creating aged wooden doors," Barlow says. "I spend a couple of mornings a week just drawing and designing. Sometimes I take a client's idea and develop it, but most of my door designs are original. A few spring from the more traditional European styles with an Old World flavor." The 'aging process' is accomplished with a wire brush and wide chisels, creating what Barlow calls an adzed look. The finish is often accented by hammered or patinaed copper panels and occasionally a stunning piece of stained glass. The design motif of each door is enhanced with complementing hardware. Some of the metalwork is done in the workshop, "We re-forge all the hinges to heat-blacken them so the finish looks naturally aged," Barlow explains.

18. PETER BARLOW peter barlow. barlow, peter (17761862), English writer on pure and applied mathematics, was born at Norwich in 1776 and JOEL barlow. SIR GEORGE HILARO barlow http://www.1911encyclopedia.org/B/BA/BARLOW_PETER.htm

PETER BARLOW BARLOW, PETER (1776-1862), English writer on pure and applied mathematics, was born at Norwich in 1776 and died on the 1st of March 1862. In 1806 he was appointed mathematical master in the Woolwich Academy, and filled that post for fortyone years. In 1823 he was made a fellow of the Royal Society, and two years later received the Copley medal. Steam locomotion received much attention at his hands, and he sat on the railway commissions of 1836, 1839, 1842, 1845. He received many distinctions from British and foreign scientific societies. Barlows principal works areElementary Investigation of the Theory of Numbers (1811); New Mathematical and Philosophical Dictionary (1814); Essay on Magnetic Attractions (1820). The investigations on magnetism led to the important practical discovery of a means of rectifying or compensating compass errors in ships. Besides compiling numerous useful tables, he contributed largely to the Encyclopaedia Meiropolitana. JOEL BARLOW SIR GEORGE HILARO BARLOW

19. Peter Barlow --  Encyclopædia Britannica Encyclopædia Britannica. barlow, peter. Encyclopædia Britannica Article Cite this article. peter barlow. born October 13, 1776, Norwich, Norfolk, England http://www.britannica.com/eb/article?eu=13550

20. List B barlow, peter (1776 1862) peter barlow was born at Norwich in October1776. The pay. peter barlow died on the 1. March 1862, aged 86. http://www.plicht.de/chris/b01.htm

List B This page is still under construction, this work will probably never finish. (Entries marked with 'r' were revised after March 1999) Babcock, Harold Delos (1882 - 1968) Babcock, Horace Welcome (1912 - ) Babinet, Jaques (1794 - 1873) Back, Ernst Emil Alexander (1881 - 1959) ... Brag, Jonas (1781 - 1857) Brahe, Tycho, see Tycho (1546 - 1601) Brambilla, Enrico (1792 - 1828) Brandes, Heinrich Wilhelm (1777 - 1834) Bredichin, Feodor Alexandrowich (1831 - ) Bredman, Johann (1770 - ) ... De Ball, L. (1853 - ) Baade, Wilhelm Heinrich Walter Babcock, Harold Delos (1882 - 1968) Father of H. W. Babcock Babcock, Horace Welcome (1912 - ) Babinet, Jaques (1794 - 1873) J. Babinet was born in Lusignan, Dept. Vienne, on the 5. March 1794. He was Professor of mathematics in Fontenay-le-Comte and Professor of physics in Poitiers and at the College Louis- Grande in Paris. Babinet helped to improve the knowledge on astronomy with his works on optics. A list of his work is in Pogg., Vol. 1. Back, Ernst Emil Alexander (1881 - 1959) Ernst E. A. Back was born on the 21. October 1881 in Freiburg and visited school (Gymnasium) in Strasbourg until 1900. Before his studies on Physics in Tuebingen between 1909-13 he studied law from 1902-06 in Strasbourg, Munich and Berlin. Between 1907 and 1909 Back worked for the administration of justice in Alsac-Lorraine. In 1909 he asked for a leave to finish his studies on Physics, which was granted, and left the administration of justice in 1912. He received his Ph.D. (Dr.) 1913 in Tuebingen as a pupil of Friedrich Paschen. His thesis, titled 'Zur Prestonschen Regel', covered a topic which is today known as the 'Paschen-Back-Effect'. The main instrumental improvements which allowed Back to do his studies were on the light source, which had to work in a small gap only 4 mm (3/16") wide between the poles of a strong electromagnet.

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