• 1582, Gregorian calendar

    Pope Gregory XIII invented the Gregorian calendar.Tag: Invention, Astronomy
  • 1511, Planetary table

    Erasmus Reinhold was a German mathematician who calculated the planetary table.Tag: Invention, Astronomy
  • 1561, Trigonometry

    Bartholomeus Pitiscus was a German mathematician who invented trigonometry.Tag: Invention, Demography
  • 1563, Maps of the New World and Europe

    Jodocus Hondius was a Flemish mathematician and cartographer. Hondius is best known for his early maps of the New World and Europe. He helped establish Amsterdam as the center of cartography in Europe Tag: Invention, Astronomy
  • 1571, elliptical orbits foundation

    German astronomer Johann Kepler discovered elliptical orbits. Tag: Invention, Astronomy
  • 1574, Slide rule

    English mathematician William Oughtred invented the slide rule. Tag: Invention, Math
  • 1578, Blood circulation

    English physician William Harvey, discovered blood circulation. Tag: Invention, Biology
16th Century

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