Jean-François Callet was a French professor of mathematics, born at Versailles on 25 October 1744 and dead on 14 November 1798, who became a professor of hydrographic engineering. His most influential work was the Tables Portatives de Logarithmes of 1795, a compilation of about 800 pages of logarithms of the sine, cosine and tangent and natural sines and cosines, based on the work of William Gardiner, which remained in print until 1906 and led to improved tables such as those of Edward Sang. He also wrote a text on spherical trigonometry for navigation, published in 1798 with the instrument maker Jean François Richer, whose trigonometric compass won the 1791 Abbé Raynal Prize for finding longitude from the apparent distance between stars.
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Source Jean-François Callet (Wikipedia)Lead, nationalityQuote, Lead, nationality
Jean-François Callet (25 October 1744 – 14 November 1798) was a French professor of mathematics who wrote an influential compilation of logarithmic tables and taught spherical trigonometry and navigation.
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1. Jean-François Callet (Wikipedia)
Lead, nationality
Jean-François Callet (25 October 1744-14 November 1798) was a French professor of mathematics who wrote an influential compilation of logarithmic tables and taught spherical trigonometry and navigation.
Biography, birth
Jean-François Callet (25 October 1744-14 November 1798) was a French professor of mathematics who wrote an influential compilation of logarithmic tables and taught spherical trigonometry and navigation.
Biography, gender
His most influential work was Tables Portatives de Logarithmes, published in 1795: a compilation of logarithmic tables, based on the work of William Gardiner, which remained in print until 1906.
In Branch: Trigonometry, Lead, field of work
Jean-François Callet (25 October 1744-14 November 1798) was a French professor of mathematics who wrote an influential compilation of logarithmic tables and taught spherical trigonometry and navigation.
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