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BRIGGS, HENRY (1556–1630)

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Originally appearing in Volume V04, Page 567 of the 1911 Encyclopedia Britannica.
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BRIGGS, See also:HENRY (1556–1630) , See also:English mathematician, was See also:born at Watley See also:Wood, near See also:Halifax, in See also:Yorkshire. He graduated at St See also:John's See also:College, See also:Cambridge, in 1581, and obtained a See also:fellow-See also:ship in 1588. In 1592 he was made reader of the See also:physical lecture founded by Dr See also:Thomas See also:Linacre, and in 1596 first See also:professor of See also:geometry in See also:Gresham See also:House (afterwards College), See also:London. In his lectures at Gresham House he proposed the alteration of the See also:scale of logarithms from the hyperbolic See also:form which John See also:Napier had given them, to that in which unity is assumed as the See also:logarithm of the ratio of ten to one; and soon afterwards he wrote to the inventor on the subject. In 1616 he paid a visit to Napier at See also:Edinburgh in See also:order to discuss the suggested See also:change; and next See also:year he repeated his visit for a similar purpose. During these conferences the alteration proposed by Briggs was agreed upon; and on his return from his second visit to Edinburgh in 1617 he accordingly published the first chiliad of his logarithms. (See NAPIER, JoHN.) In 1619 he was appointed Savilian professor of geometry at See also:Oxford, and resigned his professorship of Gresham College on the 25th of See also:July 162o. Soon after his See also:settlement at Oxford he was incorporated See also:master of arts. In 1622 he published a small See also:tract on the See also:North-See also:West Passage to the See also:South Seas, through the See also:Continent of See also:Virginia and See also:Hudson's See also:Bay; and in 1624 his Arithmetica Logarithmica, in See also:folio, a See also:work containing the logarithms of See also:thirty thousand natural See also:numbers to fourteen places of figures besides the See also:index. He also completed a table of logarithmic sines and tangents for the hundredth See also:part of every degree to fourteen places of figures besides the index, with a table of natural sines to fifteen places, and the tangents and secants for the same to ten places; all of which were printed at See also:Gouda in 1631 and published in 1633 under the See also:title of Trigonometria Britannica (see TABLE, MATHEMATICAL). Briggs died on the 26th of See also:January 163o, and was buried in Merton College See also:chapel, Oxford. Dr See also:Smith, in his Lives of the Gresham Professors, characterizes him as a See also:man of See also:great probity, a contemner of riches, and contented with his own station, preferring a studious retirement to all the splendid circumstances of See also:life.

His See also:

works are : A Table to find the Height of the See also:Pole, the Magnetical See also:Declination being given (London, 1602, 4t0); " Tables for the Improvement of See also:Navigation," printed in the second edition of See also:Edward See also:Wright's See also:treatise entitled Certain Errors in Navigation detected and corrected (London, 1610, 4t0) ; A Description of an Instrumental Table to find the part proportional, devised by Mr Edward Wright (London, 1616 and 1618, I2mo) ; Logarithmorum Chilias prima (London, 1617, 8vo); Lucubrationes et Annotations in See also:opera posthuma J. Neperi(Edinburgh, 1619, 4to) ; Euclidis Elementorum VI. libri priores (London, 162o, folio) ; A Treatise on the North- West Passage to the South See also:Sea (London, 1622, 4to), reprinted in See also:Purchas's Pilgrims, vol. iii. p. 852; Arithmetica Logarithmica (London, 1624, folio) ; Trigonometria Britannica (Goudae, 1663, folio) ; two Letters to See also:Archbishop See also:Usher; Mathematica ab Antiquis minus cognita. Some other works, as his Commentaries on the Geometry of See also:Peter See also:Ramus, and Remarks on the Treatise of See also:Longomontanus respecting the See also:Quadrature of the Circle, have not been published.

End of Article: BRIGGS, HENRY (1556–1630)

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