1639 in science

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The year 1639 in science and technology involved some significant events.

Contents

1 Astronomy
2 Exploration
3 Mathematics
4 Births
5 Deaths
6 References

Astronomy

Giovanni Battista Zupi observes that the planet Mercury has orbital phases.
December 4 (November 24 in Julian calendar) - Jeremiah Horrocks, an English astronomer, observes the transit of Venus.

Exploration

The Casiquiare canal, a river forming a natural canal between the Amazon River and Orinoco River basins, is first encountered by Europeans

Mathematics

Girard Desargues introduces the concept of infinity into geometry.^[1]

Births

December 18 - Gottfried Kirch, German astronomer (d. 1710)
approx. date - Daniel Greysolon, Sieur du Lhut, French explorer (d. 1710)

Deaths

June 6 - Peter Crüger, German polymath (b. 1580)
August 7 - Martin van den Hove, Dutch astronomer (b. 1605)

References

^ Crilly, Tony (2007). 50 Mathematical Ideas you really need to know. London: Quercus. p. 28. ISBN 978-1-84724-008-8.