Events

• Albrecht Dürer
  Albrecht Dürer
  Albrecht Dürer was a German painter, printmaker, engraver, mathematician, and theorist from Nuremberg. His prints established his reputation across Europe when he was still in his twenties, and he has been conventionally regarded as the greatest artist of the Northern Renaissance ever since...
  
  's book on geometry and perspective, The Painter's Manual (more literally, the Instructions on Measurement) is published at Nuremberg
  Nuremberg
  Nuremberg[p] is a city in the German state of Bavaria, in the administrative region of Middle Franconia. Situated on the Pegnitz river and the Rhine–Main–Danube Canal, it is located about north of Munich and is Franconia's largest city. The population is 505,664...
  
  . It is the first book for adults to be published on mathematics
  Mathematics
  Mathematics is the study of quantity, space, structure, and change. Mathematicians seek out patterns and formulate new conjectures. Mathematicians resolve the truth or falsity of conjectures by mathematical proofs, which are arguments sufficient to convince other mathematicians of their validity...
  
   in German
  German language
  German is a West Germanic language, related to and classified alongside English and Dutch. With an estimated 90 – 98 million native speakers, German is one of the world's major languages and is the most widely-spoken first language in the European Union....
  
  .
• Christoff Rudolff introduces the modern radical symbol (for square root
  Square root
  In mathematics, a square root of a number x is a number r such that r2 = x, or, in other words, a number r whose square is x...
  
  ), √ (without the vinculum above the radicand).

Births

• September 25 - Steven Borough
  Steven Borough
  Steven Borough , English navigator, was born at Northam, Devon.In 1553 he took part in the expedition which was dispatched from the Thames under Sir Hugh Willoughby to look for a northern passage to Cathay and India, serving as master of the Edward Bonaventure, on which Richard Chancellor sailed as...
  
  , English
  English people
  The English are a nation and ethnic group native to England, who speak English. The English identity is of early mediaeval origin, when they were known in Old English as the Anglecynn. England is now a country of the United Kingdom, and the majority of English people in England are British Citizens...
  
   explorer (d. 1584
  1584 in science
  The year 1584 in science and technology included many events, some of which are listed here.-Astronomy:* Completion of Tycho Brahe's subterranean observatory at Stjerneborg....
  
  )
• December 1 - Tadeáš Hájek
  Tadeáš Hájek
  Tadeáš Hájek z Hájku , also known as Tadeáš Hájek of Hájek, Thaddaeus Hagecius ab Hayek or Thaddeus Nemicus, was the personal physician of the Holy Roman Emperor Rudolph II and a Bohemian astronomer.Tadeáš Hájek was the son of Šimon Hájek from an old Prague family...
  
  , Czech physician
  Physician
  A physician is a health care provider who practices the profession of medicine, which is concerned with promoting, maintaining or restoring human health through the study, diagnosis, and treatment of disease, injury and other physical and mental impairments...
  
   and astronomer
  Astronomer
  An astronomer is a scientist who studies celestial bodies such as planets, stars and galaxies.Historically, astronomy was more concerned with the classification and description of phenomena in the sky, while astrophysics attempted to explain these phenomena and the differences between them using...
  
   (d. 1600
  1600 in science
  The year 1600 CE in science and technology included some significant events.-Astronomy:* January 1 - Scotland adopts today as being New Year's Day.* February 4 - Johannes Kepler joins Tycho Brahe as his assistant at the castle of Benátky, near Prague....
  
  )