2.5 Timeline

  • 276 BCE

    Eratosthenes born

  • 85

    Ptoloemy born

  • 165

    Ptolemy death

  • 195

    Erastothenes death

  • Feb 19, 1473

    Copernicus born

  • 1492

    Copernicus Copernicus studied mathematics and Greek and Islamic astronomy at University of Krakow

  • 1497

    Copernicus elected a canon of the cathedral in Frombork

  • 1503

    Copernicus returned to live in his uncle’s castle and serve as his secretary and physician

  • 1514

    Copernicus wrote a report, Little Commentary, that expounded his heliocentric theory

  • 1541

    Copernicus agreed to publication of his study

  • May 24, 1543

    Copernicus death

  • Feb 15, 1564

    Galileo born

  • 1581

    Galileo studied medicine until 1585

  • Galileo taught mathematics at the University of Pisa

  • Galileo secured the chair of mathematics at University of Padua

  • Galileo wrote letter to Kepler in support of Copernicus

  • Galileo observed supernova

  • Galileo saw for the first time 4 moons orbiting Jupiter

  • Galileo created telescopic device 3x more powerful than previous Dutch device

  • Galileo published his book Dialogue Concerning the Two Chief World Systems — Ptolemaic and Copernican

  • Galileo sentenced house arrest after trial for his book supporting heliocentric view

  • Galileo death

  • Isaac Newton Born

  • Newton attends Cambridge University

  • Newton's White Light Discovery

  • Newton Publishes Mathematical Principles of Natural Philosophy

  • Newton published "Opticks"

  • Newton knighted by Queen Anne

  • Newton death

  • Mendeleev born

  • Mendeleev graduates as science teacher

  • Mendeleev publishes Organic Chemistry

  • Mendeleev chemistry professor at St. Petersburg

  • Marie Curie born

  • Mendeleev creates the periodic table of elements

  • Wegener born

  • noble gases discovered

  • Marie Curie became first woman to earn physics degree from Sorbonne

  • Curie begins working on radioactivity

  • Curie discovers polonium and radium

  • Curie discovers alpha and beta rays

  • Curie receives doctorate

  • Curie becomes first woman awarded Nobel Prize

  • Wegener receives PhD from University of Britain in Astronomy

  • Hess born

  • Mendeleev death

  • Wegener realizes South America and Africa fit together

  • Curie receives second Nobel Prize in chemistry

  • Wegener co-wrote The Thermodynamics of the Atmosphere

  • Wegener publishes The Origin of Continents and Oceans

  • Crick born

  • Franklin born

  • Wegener attends conference in NY and had his ideas spat on

  • Watson born

  • Wegener death

  • Marie Curie death

  • Wegener leads dogsled team in arctic

  • Linus Pauling determines helix shape of DNA

  • Franklin joins Biophysics at Kings

  • Franklin took clear photo of DNA through X-ray diffraction

  • Watson and Crick admit to using Franklin's evidence and finally give her credit

  • Franklin death

  • Watson, Crick, and Wilkins receive Nobel Prize, Franklin had already died

  • Hess publishes History of Ocean Basins

  • Earths magnetic field has reversed its polarity multiple times discovery

  • Watson plans sequencing human genome

  • Hess death

  • Plate tectonics becomes the used term

  • crick death