World History chapter 22 By Kayla Spurlock 140 BCE Ptolemy supported the geocentric theory 4 BCE Aristotle explained the geocentric theory 1543 Nicolaus Copernicus reasoned the heliocentric theory 1543 Andreas Vesalius published On the Fabric of the Human Body 1590 Zacharias Janssen invented the microscope 1600 The Baroque Period began in art,music,and architecture. 1602 Galileo developed the law of the pendulum 1609 Johannes Kepler published the first two laws of planetary motion 1620 Francis Bacon published Novum Organum 1637 Rene Descartes published Discourse on Method 1638 Galileo was put under house arrest by an Inquisition for supporting Copernicus' theory 1643 Evangelista Torricelli developed the first mercury barometer 1651 Thomas Hobbes published the Leviathan 1662 Robert Boyle created Boyle's Law 1664 Marie-Therese Geoffrin held her first salon of philosophes 1687 Isaac Newton published his law of gravity 1687 Emelie du Chatalet translated Newton's work from Latin to French 1689 John Locke explains his theory of natural rights 1694 Mary Astell wrote A Serious Proposal to the Ladies 1695 Anton Van Leeuwenhoek saw red blood cells 1714 Gabriel Fahrenheit made the first thermometer to use mercury in glass 1714 Anders Celsius created a scale for the mercury thermometer 1717 Francois-Marie Arouet changed his name to Voltaire and goes on to champion individual freedoms 1740 Joseph II rules Prussia 1740 Frederick II began his rule of Prussia 1748 Montesquieu published On the Spirit of Laws 1750 The classical period of art begins 1751 Denis Diderot published the first volume of Encyclopedia 1762 Jean Jacques Rousseau wrote the social contract 1763 Catherine the great rules Russia 1764 Cesare Beccaria published On Crimes and Punishments 1772 Joseph Priestly discovered oxygen 1776 Thomas Jefferson wrote the declaration of independence 1777 Antoine Lavosier discovered and named oxygen gas 1780 Joseph II ruled Austria 1787 The U.S enacted the Constitution 1792 Mary Wollstonecraft wrote a Vindication of the Rights of Woman 1796 Edward Jenner introduced a vaccine for chicken pox