- 1729 in science
The year 1729 in
science andtechnology involved some significant events.Astronomy
* English
optician Chester Moor Hall (1703-1771) develops anachromatic lens (or achromat) commonly used as the objective of smallrefractor telescope s.
*January 9 ,January 16 -James Bradley , in a letter written toEdmond Halley FRS, describes his discovery ofaberration of starlight to the Royal Society. [The date is clarified in "Isis" Vol. 16, No. 2 (Nov., 1931), "Discovery of the Aberration of Light". The relevant page can be seen at [http://links.jstor.org/sici?sici=0021-1753(193111)16%3A2%3C233%3ADOTAOL%3E2.0.CO%3B2-Z] .]Mathematics
*
Andrew Motte publishes "The Mathematical Principles of Natural Philosophy", the first English translation ofIsaac Newton 's "Philosophiæ Naturalis Principia Mathematica " (originally published 1687, Motte translated the 1726 edition). [cite web |url=http://www.centre.edu/web/news/2006/Newton_one.pdf |title=Isaac Newton and the Scientific Revolution |author=Steinbock, R. Ted |publisher=Centre College |year=2006]Physics
* Stephen Gray discovers
electrical conduction . [cite web |url=http://galileo.rice.edu/Catalog/NewFiles/gray.html |title=Gray, Stephen |author=Westfall, Richard S. |work=The Galileo Project]Births
*
January 12 -Lazzaro Spallanzani , Italian biologist (died 1799)
*November 11 -Louis Antoine de Bougainville , French explorer (died 1811)Deaths
*
January 31 -Jakob Roggeveen , Dutch explorer (born 1659)
*March 2 -Francesco Bianchini , Italian philosopher and scientist (born 1662)
*August 5 -Thomas Newcomen , English inventor (born 1664)
*December 1 -Giacomo F. Maraldi , French-Italian astronomer (born 1665)References
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