Timeline 1550-1789 By wihuwo Period: May 7, 1550 to May 7, 1789 Timeline May 7, 1581 Galileo discovered the Law of the pendulum May 7, 1609 Galileo ovserves heavens through a telescope May 7, 1610 Galileo published stary messenger May 7, 1628 William Harvey describes heart function May 7, 1633 Galileo faces inquistion for support of Copernicus's theory May 7, 1643 Torricelli invents Barometer May 7, 1687 Newton publishes treatise on law of gravity May 7, 1690 John Locke defines natural rights May 7, 1714 Fahrenheit invents mercury thermometer May 7, 1734 Voltaire flees Paris May 7, 1748 Montesquieu describes seperation of power May 7, 1762 Catherine the Great rules Russia May 7, 1767 Catherine formed a commission to review Russia's Law May 7, 1789 Rousseau inspired many leaders who overthrew the monarch of the French Revolution