2 million years B.C. : The first Stone Age tools -- 1 million-1.6 million years B.C. : Humans master fire -- C. 8000 B.C. : The bow and arrow -- 3500 B.C. : The Sumerian wheel -- 330 B.C. : Aristotle proclaims : Earth is NOT flat -- A.D. 132 : Zhang Heng's seismometer -- C. A.D. 850 : The Chinese alchemist's gunpowder -- 1504 : Regiomontanus's lunar eclipse -- 1616 : Galileo's telescope -- 1665 : Isaac Newton's falling apple -- 1752 : Ben Franklin's electric kite -- 1771 : Galvani's circuit and Volta's battery -- 1783 : The Montgolfiers' hot-air balloon -- 1796 : Edward Jenner's miracle vaccine -- 1797 : Garnerin's parachute -- 1825 : George Stephenson's steam train -- 1854 : Otis's elevator safety brake -- 1859 : Darwin revolutionary evolutionary book -- 1895 : Röntgen identifies X-rays -- 1898 : Marie Curie discovers radioactive isotope -- 1903 : The Wright brothers' flying machine -- 1905 : Einstein's atom -- 1926 : Robert Goddard's rocket ship -- 1936 : Igor Sikorsky's helicopter -- 1942 : Fermi's chain reaction -- 1947 : Chuck Yeager's sonic boom -- 1947 : John Stapp rides on a rocket sled -- 1953 : Watson and Crick's DNA -- 1960 : Theodore Maiman's laser beam -- 1961 : Yuri Gagarin goes into orbit -- 1962 : Rachel Carson's Silent Spring -- 1967 : Christiaan Barnard's human heart transplant -- 1999 : Dieter Issler's avalanche -- 2008 : The Large Hadron Collider.
|
