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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク John Hood (inventor) ： ウィキペディア英語版 John Hood (inventor) John Hood (1720–c.1783) was an Irish surveyor and inventor, born in Moyle, County Carlow. ==Works== In 1772 was published in Dublin Hood's ''Tables of Difference of Latitude and Departure for Navigators, Land Surveyors''. In it he recommended that in surveying the bearing of objects should be taken from the meridian of the place. The tables printed in the book are the natural sines of all the angles, in degrees and quarter degrees, to different radii, the latter ranging from 1 to 100, as being best adapted to Gunter's chain. Hood also gave an account of the diurnal variation of the magnetic needle and its correction, and a description of a new surveying instrument. This invention was elsewhere called Hood's compass theodolite, and is described as the basis of theodolites later used in Britain and America. He is also said to have anticipated the invention of Hadley's quadrant, but took out no patents. 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「John Hood (inventor)」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.