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Henry Briggs

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John Napier and the Discovery of Logarithms

John Napier and the Discovery of Logarithms

Tabea Tietz
On April 4, 1617, Scottish mathematician, physicist, astronomer and astrologer John Napier of Merchiston, the 8th Laird of Merchistoun passed away. John Napier is best known as the discoverer of logarithms. He was also the inventor of the so-called “Napier’s bones“, a kind of abacus for calculation of products and quotients of numbers. Napier also made common the use of the decimal point in arithmetic and mathematics. “A Logarithmic Table is a…
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mathematics
Henry Briggs and the Popularization on Logarithms

Henry Briggs and the Popularization on Logarithms

Tabea Tietz
On January 26, 1630, English mathematician and committed puritan Henry Briggs passed away. He is notable for changing the original logarithms invented by John Napier into common (base 10) logarithms, which are sometimes known as Briggsian logarithms in his honour. Henry Briggs’ Education Henry Briggs was born in Halifax, however, his exact date of birth remains unknown. His early family life is also not too well known, but it is believed that…
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mathematics
Edmund Gunter and his Measuring Devices

Edmund Gunter and his Measuring Devices

Harald Sack
On December 10, 1626, English clergyman, mathematician, geometer and astronomer Edmund Gunter passed away. Gunther is best remembered for his mathematical contributions which include the invention of the Gunter’s chain, the Gunter’s quadrant, and the Gunter’s scale. In 1620, he invented the first successful analog device which he developed to calculate logarithmic tangents. Edmund Gunter – Early Life Edmund Gunter was born in Hertfordshire in 1581. Edmund attended Westminster School as a…
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mathematics
John Pell and the Obelus

John Pell and the Obelus

Tabea Tietz
On March 1, 1611, English mathematician John Pell was born. Pell introduced the division sign (obelus, ÷) into England. The obelus was first used by Johann Rahn (1622-1676) in 1659 in Teutsche Algebra. Rahn’s book was interpreted into English and published, with additions made by John Pell. John Pell – Early Years Pell was born in Southwick in Sussex, where his father of the same name, John Pell, was pastor and rector; his…
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