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James Thomson Bottomley (1845 -1926) was an Irish-born physicist. He is noted for his work on thermal radiation and on his creation of 4-figure logarithm tables, used to convert long multiplication and division calculations to simpler addition and subtraction before the introduction of fast calculators. ==Life== He was born in Fort Breda, County Down in Ireland, on 10 January 1845, the son of William Bottomley JP, a merchant in nearby Belfast. His mother, Anna Thomson, was the sister of William Thomson, Lord Kelvin,〔http://www.universitystory.gla.ac.uk/biography/?id=WH24570&type=P〕 a connection which served him well throughout his life. He was educated at Queens College, Belfast and then Trinity College, Dublin, originally studying natural philosophy and chemistry.〔http://genealogy.links.org/links-cgi/readged?/home/ben/camilla-genealogy/current+c-bottomley62562+2-2-0-1-0〕 His first employment was as assistant to scientist Thomas Andrews in Belfast. He then became a Demonstrator at King’s College, London, first in chemistry and then in physics.〔http://genealogy.links.org/links-cgi/readged?/home/ben/camilla-genealogy/current+c-bottomley62562+2-2-0-1-0〕 In 1870 he became a Demonstrator in Physics at Glasgow University. In 1875 this was retitled the Arnott and Thomson Demonstrator in Experimental Physics, following a bequest from the widow of Neil Arnott. In 1872 his uncle Lord Kelvin proposed him as a Fellow of the Royal Society of Edinburgh, and this was duly accepted. In June 1888 he was elected a Fellow of the Royal Society in London.〔http://www.royalsoced.org.uk/cms/files/fellows/biographical_index/fells_indexp1.pdf〕 In 1899, again with his uncle, the Glasgow engineering firm of Kelvin, Bottomley & Baird (K.B.B) was formed, specialising in gauges and meters but also producing loudspeakers and telephones.〔http://www.gracesguide.co.uk/Kelvin,_Bottomley_and_Baird〕 He became its chairman in 1908. In 1913 it became a Limited Company. He lived at 13 University Gardens, Glasgow, in this period.〔Glasgow Post Office Directory 1911-12〕 He died in Glasgow on 18 May 1926.〔http://www.royalsoced.org.uk/cms/files/fellows/biographical_index/fells_indexp1.pdf〕 The company of Kelvin, Bottomley and Baird continued until 1947. 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「James Thomson Bottomley」の詳細全文を読む スポンサード リンク
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