1631 in science
The year 1631 in science and technology involved some significant events.
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Astronomy
- Using Kepler's predictions of planetary transits made in 1630, Pierre Gassendi made the first recorded observation of the Transit of Mercury on November 7th. The observed size of Mercury's disc was significantly smaller than had been expected from Ptolemaic theory.
Geology
- December 16 – Volcanic eruption of Mount Vesuvius for the only time this century.
Mathematics
- William Oughtred publishes Clavis Mathematicae, introducing the multiplication sign (×) and proportion sign (::).[1][2]
- Some of Thomas Harriot's writings on algebra are published posthumously as Artis Analyticae Praxis.
Births
- Richard Lower, English physician who performed the first direct blood transfusion (died 1691)
- approx. date – William Ball, English astronomer (died 1690)
Deaths
- October 20 – Michael Maestlin, German astronomer and mathematician (born 1550)
- 26 October – Catherine de Parthenay, French noblewoman and mathematician (b. 1554)
- December 10 – Sir Hugh Myddelton, Welsh-born goldsmith and hydraulic engineer (born c. 1560)
References
- Cajori, Florian (1919). A History of Mathematics. Macmillan. p. 157.
cajori william-oughtred multiplication.
- Pycior, Helena Mary (1997). Symbols, Impossible Numbers, and Geometric Entanglements: British Algebra through the Commentaries on Newton's Universal Arithmetick. p. 48. ISBN 0-521-48124-4.
- Hubbard, Frank (1967).
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