1543 in science
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The year 1543 in science and technology includes the 1543 Nicolaus Copernicus publication De revolutionibus orbium coelestium (On the Revolutions of the Heavenly Spheres) often cited as the beginning of the Scientific Revolution,Juan Valdez, The Snow Cone Diaries: A Philosopher's Guide to the Information Age, p 367. and also includes many other events, some of which are listed here.
Astronomy
File:Nicolai Copernici torinensis De revolutionibus orbium coelestium.djvu by Nicolaus Copernicus]]
- Nicolaus Copernicus publishes De revolutionibus orbium coelestium (On the Revolutions of the Heavenly Spheres) in Nuremberg, offering entirely abstract mathematical arguments for the existence of the heliocentric universe. It is often cited as the beginning of the Scientific Revolution.
Mathematics
- Robert Recorde publishes The Grounde of Artes, teaching the Worke and Practise of Arithmeticke, both in whole numbers and fractions, one of the first printed elementary arithmetic textbooks in English and the first to cover algebra. It will go through around forty-five editions in the following century and a half.{{cite web|first=Stephen|last=Johnston|title=Recorde, Robert (c. 1512–1558)|work=Oxford Dictionary of National Biography|publisher=Oxford University Press|year=2004|url=http://www.oxforddnb.com/view/article/23241|accessdate=2012-01-26|doi=10.1093/ref:odnb/23241}} {{ODNBsub}}
- Niccolò Fontana Tartaglia publishes a translation of Euclid's Elements into Italian, the first into any modern European language.
Medicine
Image:Vesalius Fabrica p184.jpg]]
- Andreas Vesalius publishes De humani corporis fabrica (On the Fabric of the Human Body), illustrated by Jan van Calcar, in Basel, revolutionizing the science of human anatomy. He includes an account of a successful experimental tracheotomy for artificial respiration of a canine subject.
Technology
- Ralf Hogge, working for Rev. William Levett, casts iron cannon at his blast furnace in the Sussex Weald of England.{{cite book|authorlink=James Burke (science historian)|first=James|last=Burke|title=Connections|location=London|publisher=Macmillan|year=1978|isbn=0-333-24827-9|page=166}}
- Lighthouse of Genoa completed in present form.{{cite rowlett|itanw}}
Births
- Domenico Fontana (died 1607), Swiss-born architect.{{cite web|title=The Theater that was Rome – Biography|url=https://library.brown.edu/projects/rome/people/0120/|website=library.brown.edu|accessdate=3 April 2018}}
- approximate date – William Clowes (died 1604), English surgeon.
Deaths
- January 3 – Juan Rodríguez Cabrillo (born c. 1499), Portuguese explorer.
- May 24 – Nicolaus Copernicus (born 1473), Polish astronomer.