An Elementary Investigation of the Theory of Numbers (1811);
A New Mathematical and Philosophical Dictionary (1814); and
New Mathematical Tables (1814).
The latter became known as Barlow's Tables and gives squares, cubes, square roots, cube roots, and reciprocals of all integer numbers from 1 to 10,000. These tables were regularly reprinted until 1965,[2] when computers rendered them obsolete. He contributed to Rees's Cyclopædia articles on Algebra, Analysis, Geometry and Strength of Materials. Barlow also contributed largely to the Encyclopædia Metropolitana.
Work in physics and engineering
Essay on magnetic attractions, and on the laws of terrestrial and electro magnetism, 1824
In 1823, he was made a fellow of the Royal Society. Two years later, he received its Copley Medal for his work on correcting the deviation in ship compasses caused by the presence of iron in the hull.[1][3] Some of his magnetic research was done in collaboration with Samuel Hunter Christie. He conducted early experimental and observational studies on the origins of terrestrial magnetism.[4] He is credited with the eponymous Barlow's wheel (an early homopolarelectric motor) and with Barlow's law (an incorrect formula of electrical conductance).
Barlow investigated a suggestion made by André-Marie Ampère in 1820 that an electromagnetic telegraph could be made by deflecting a compass needle with an electric current. In 1824 Barlow proclaimed the idea impractical after he found that the effect on the compass seriously diminished "with only 200 feet of wire". Barlow, and other eminent scientists of the time who agreed with him, are criticised for retarding the development of the telegraph. A decade passed between Ampère's paper being read at the Paris Academy of Sciences and William Ritchie building the first demonstration electromagnetic telegraph. In Barlow's defence, Ampère's design did not enclose the compass in a multiplying coil, as Ritchie's demonstrator did, so the effect would have been very weak at a distance.[5]
Steam locomotion received much attention at Barlow's hands and he sat on the railway commissions of 1836, 1839, 1842 and 1845. He also conducted several investigations for the newly formed Railway Inspectorate in the early 1840s.
Peter Barlow FRS – gravestone in Charlton Cemetery, London SE7
Barlow made several contributions to the theory of strength of materials, including Essay on the strength and stress of timber (1817) which contains experimental data collected at Woolwich. The sixth edition (1867) of this work was prepared by Barlow's two sons after his death and contains a biography of their father. Barlow also applied his knowledge of materials to the design of bridges.[3] His sons Peter W. Barlow and William Henry Barlow became notable civil engineers of the 19th century. He was elected a Foreign Honorary Member of the American Academy of Arts and Sciences in 1832.[6]
Following his death in 1862 at his home in Charlton,[7] he was buried in Charlton Cemetery.
^Emmanuel Dormy (2007). David Gubbins; Emilio Herrero-Bervera (eds.). Encyclopedia of geomagnetism and paleomagnetism. Springer. pp. 40–41.
^Fahie, John Joseph, A History of Electric Telegraphy, to the Year 1837, pp. 302–307, London: E. & F.N. Spon, 1884 OCLC 559318239.
^"Book of Members, 1780-2010: Chapter B" (PDF). American Academy of Arts and Sciences. Retrieved 17 May 2011.
^"Deaths". The Times. No. 24184. London. 4 March 1862. p. 1.
External links
Wikimedia Commons has media related to Peter Barlow.
Wikiquote has quotations related to Peter Barlow (mathematician).
January 06, 2023
peter, barlow, mathematician, peter, barlow, october, 1776, march, 1862, english, mathematician, physicist, peter, barlowpeter, barlowborn, 1776, october, 1776norwich, norfolkdied1, march, 1862, 1862, aged, charlton, londonnationalityenglishknown, forbarlow, l. Peter Barlow FRS 13 October 1776 1 March 1862 1 2 was an English mathematician and physicist Peter BarlowPeter BarlowBorn 1776 10 13 13 October 1776Norwich NorfolkDied1 March 1862 1862 03 01 aged 85 Charlton LondonNationalityEnglishKnown forBarlow lensBarlow s wheelBarlow s formulaBarlow s TablesAwardsCopley Medal 1825 Scientific careerFieldsMathematics physics engineering Contents 1 Work in mathematics 2 Work in physics and engineering 3 See also 4 References 5 External linksWork in mathematics EditIn 1801 Barlow was appointed assistant mathematics master at the Royal Military Academy Woolwich 1 3 and retained this post until 1847 2 He contributed articles on mathematics to The Ladies Diary 3 as well as publishing books such as 1 3 An Elementary Investigation of the Theory of Numbers 1811 A New Mathematical and Philosophical Dictionary 1814 and New Mathematical Tables 1814 The latter became known as Barlow s Tables and gives squares cubes square roots cube roots and reciprocals of all integer numbers from 1 to 10 000 These tables were regularly reprinted until 1965 2 when computers rendered them obsolete He contributed to Rees s Cyclopaedia articles on Algebra Analysis Geometry and Strength of Materials Barlow also contributed largely to the Encyclopaedia Metropolitana Work in physics and engineering Edit Essay on magnetic attractions and on the laws of terrestrial and electro magnetism 1824 In collaboration 1827 1832 with optician George Dollond Barlow built an achromatic lens that utilized liquid carbon disulfide Achromatic lenses were important optical elements of improved telescopes In 1833 Barlow built an achromatic doublet lens of joined flint glass and crown glass 1 3 A derivative of this design named a Barlow lens is widely used in modern astronomy and photography as an optical element to increase both achromatism and magnification In 1823 he was made a fellow of the Royal Society Two years later he received its Copley Medal for his work on correcting the deviation in ship compasses caused by the presence of iron in the hull 1 3 Some of his magnetic research was done in collaboration with Samuel Hunter Christie He conducted early experimental and observational studies on the origins of terrestrial magnetism 4 He is credited with the eponymous Barlow s wheel an early homopolar electric motor and with Barlow s law an incorrect formula of electrical conductance Barlow investigated a suggestion made by Andre Marie Ampere in 1820 that an electromagnetic telegraph could be made by deflecting a compass needle with an electric current In 1824 Barlow proclaimed the idea impractical after he found that the effect on the compass seriously diminished with only 200 feet of wire Barlow and other eminent scientists of the time who agreed with him are criticised for retarding the development of the telegraph A decade passed between Ampere s paper being read at the Paris Academy of Sciences and William Ritchie building the first demonstration electromagnetic telegraph In Barlow s defence Ampere s design did not enclose the compass in a multiplying coil as Ritchie s demonstrator did so the effect would have been very weak at a distance 5 Steam locomotion received much attention at Barlow s hands and he sat on the railway commissions of 1836 1839 1842 and 1845 He also conducted several investigations for the newly formed Railway Inspectorate in the early 1840s Peter Barlow FRS gravestone in Charlton Cemetery London SE7 Barlow made several contributions to the theory of strength of materials including Essay on the strength and stress of timber 1817 which contains experimental data collected at Woolwich The sixth edition 1867 of this work was prepared by Barlow s two sons after his death and contains a biography of their father Barlow also applied his knowledge of materials to the design of bridges 3 His sons Peter W Barlow and William Henry Barlow became notable civil engineers of the 19th century He was elected a Foreign Honorary Member of the American Academy of Arts and Sciences in 1832 6 Following his death in 1862 at his home in Charlton 7 he was buried in Charlton Cemetery See also Edit2147483647 Barlow commented on this Mersenne primeReferences Edit Wikisource has the text of the 1911 Encyclopaedia Britannica article Barlow Peter a b c d e Encyclopaedia Britannica Online Peter Barlow a b c Lance Day and Ian McNeil Biographical dictionary of the history of technology Routledge 1995 page 42 a b c d e f MacTutor Biography Peter Barlow Emmanuel Dormy 2007 David Gubbins Emilio Herrero Bervera eds Encyclopedia of geomagnetism and paleomagnetism Springer pp 40 41 Fahie John Joseph A History of Electric Telegraphy to the Year 1837 pp 302 307 London E amp F N Spon 1884 OCLC 559318239 Book of Members 1780 2010 Chapter B PDF American Academy of Arts and Sciences Retrieved 17 May 2011 Deaths The Times No 24184 London 4 March 1862 p 1 External links Edit Wikimedia Commons has media related to Peter Barlow Wikiquote has quotations related to Peter Barlow mathematician Barlow s Formula Calculator Biographical information Retrieved from https en wikipedia org w index php title Peter Barlow mathematician amp oldid 1079294423, wikipedia, wiki, book, books, library,
