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Thomas Stephens Davies (1795–1851) was a British mathematician. ==Life== Davies made his earliest communications to the ''Leeds Correspondent'' in July 1817 and the ''Gentleman's Diary'' for 1819. He subsequently contributed largely to the ''Gentleman's and Lady's Diary'', Clay's ''Scientific Receptacle'', the ''Monthly Magazine'', the ''Philosophical Magazine'', the ''Bath and Bristol Magazine'', and the ''Mechanics' Magazine''. Davies was elected a Fellow of the Society of Antiquaries of London, 19 March 1840 Davies's early acquaintance with Dr. William Trail, the author of the ''Life of Dr. Robert Simson'', materially influenced his course of study and made him familiar with the old as well as with the modern professors of geometry. He became a fellow of the Royal Society of Edinburgh in 1831, and he contributed several original and elaborate papers to its ''Transactions''. He also published ''Researches on Terrestrial Magnetism'' in the ''Philosophical Transactions'', ''Determination of the Law of Resistance to a Projectile'' in the ''Mechanics' Magazine'', and other papers in the ''Cambridge and Dublin Mathematical Journal'', the ''Civil Engineer'', the ''Athenæum'', the ''Westminster Review'', and ''Notes and Queries''. In April, 1833 he was elected a Fellow of the Royal Society.〔 (【引用サイトリンク】 Library and Archive catalogue ) 〕 In 1834, he was appointed one of the mathematical masters in the Royal Military Academy at Woolwich. Among the numerous subjects that engaged his attention were researches on the properties of the trapezium, Pascal's hexagramme mystique, Brianchon's theorem, symmetrical properties of plane triangles, and researches into the geometry of three dimensions. His new system of spherical geometry preserves his name in the list of well-known mathematicians. His presentation "On the Velocipede" in May 1837 is extant as a manuscript and gives a vivid testimony of the rise and putting down of the draisines aka hobby-horses. He must have been an early hobby-horse rider himself according to that (transcript in ''The Boneshaker'' #108(1985) pp. 4–9 and #111(1986) pp. 7–12)) His death, after six years of illness, took place at Broomhall Cottage, Shooter's Hill, Kent, on 6 January 1851, when he was in his fifty-seventh year. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Thomas Stephens Davies」の詳細全文を読む スポンサード リンク
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