| Pythagoras 566 B.C. |
 |
 |
| Hippocrates c. 460-377 B.C. |
|
|
| Aristotle 384-322 B.C. |
|
|
| Euclid 335-270 B.C. |
|
|
| Archimedes 287-212 B.C. |
|
|
| Eratosthenes c. 275-195 B.C. |
|
|
| Hipparchus 190 B.C. |
|
|
| Ptolemy second century A.D. |
|
|
| Roger Bacon 1214-1292 A.D. |
|
|
| Johannes Gutenberg 1390s-1468 A.D. |
|
|
| Leonardo da Vinci 1452-1519 A.D. |
|
|
| Nicolaus Copernicus 1473-1543 A.D. |
|
|
| Tycho Brahe 1546-1601 A.D. |
|
|
| Jesuit Father Matteo Ricci 1552-1610 A.D. |
|
|
| Galileo Galilei 1564-1642 A.D. |
|
|
| Johannes Kepler 1571-1630 A.D. |
|
|
| Blaise Pascal 1623-1662 A.D. |
|
|
| Robert Boyle 1627-1691 A.D. |
|
|
| Sir Isaac Newton 1642-1727 A.D. |
|
|
| Benjamin Franklin 1706-1790 A.D. |
|
|
| Benjamin Banneker 1731-1806 A.D. |
|
|
| James Watt 1736-1819 A.D. |
|
|
| Jose and Jacques Montgolfier 1740-1810/1745-1799 A.D. |
|
|
| Robert Fulton 1765-1815 A.D. |
|
|
| Eli Whitney 1765-1825 A.D. |
|
|
| Nathaniel Bowditch 1773-1838 A.D. |
|
|
| Sir Humphry Davy 1778-1829 A.D. |
|
|
| Joseph Gay-Lussac 1778-1850 A.D. |
|
|
| George Stephenson 1781-1848 A.D. |
|
|
| Michael Faraday 1791-1867 A.D. |
|
|
| Samuel Finley Breese Morse 1791-1872 A.D. |
|
|
| John Deere 1804-1886 A.D. |
|
|
| Matthew Maury 1806-1873 A.D. |
|
|
| Louis Braille 1809-1852 A.D. |
|
|
| Charles Robert Darwin 1809-1882 A.D. |
|
|
| Cyrus Hall McCormick 1809-1884 A.D. |
|
|
| Maria Mitchell 1818-1889 A.D. |
|
|
| Elias Howe 1819-1867 A.D. |
|
|
| Florence Nightingale 1820-1910 A.D. |
|
|
| Elizabeth Blackwell 1821-1910 A.D. |
|
|
| Louis Pasteur 1822-1895 A.D. |
|
|
| Levi Strauss c. 1829-1902 A.D. |
|
|
| Gottlieb Wilhelm Daimler 1834-1900 A.D. |
|
|
| Wilhelm Conrad Roentgen 1845-1923 A.D. |
|
|
| George Westinghouse 1846-1914 A.D. |
|
|
| Alexander Graham Bell 1847-1922 A.D. |
|
|
| Thomas Alva Edison 1847-1931 A.D. |
|
|
| Walter Reed 1851-1902 A.D. |
|
|
| Jan Matzeliger 1852-1889 A.D. |
|
|
| George Eastman 1854-1932 A.D. |
|
|
| Thomas Augustus Watson 1854-1934 A.D. |
|
|
| Sigmund Freud 1856-1939 A.D. |
|
|
| William James & Charles Horace Mayo 1861-1939 & 1865-1939 A.D. |
|
|
| Henry Ford 1863-1947 A.D. |
|
|
| George Washington Carver c. 1864-1943 A.D. |
|
|
| Wilbur & Orville Wright 1867-1912 & 1871-1948 A.D. |
|
|
| Marie Curie 1867-1934 A.D. |
|
|
| Chaim Azriel Weizmann 1874-1952 A.D. |
|
|
| Albert Einstein 1879-1955 A.D. |
|
|
| Sir Alexander Fleming 1881-1955 A.D. |
|
|
| Robert Hutchings Goddard 1882-1945 A.D. |
|
|
| Anthony Fokker 1890-1939 A.D. |
|
|
| Enrico Fermi 1901-1954 A.D. |
|
|
| Rachel Louise Carson 1907-1964 A.D. |
|
|
| Jonas Edward Salk 1914-1995 A.D. |
|
|
| The First Television Public Broadcast 1939 A.D. |
|
|
| Popularization of the Computer Age 1970s A.D. |
|
|
| Scientists Clone "Dolly" the Sheep February 1997 A.D. |
|
|
| First Completely Sequenced Human Chromosome December 1, 1999 A.D. |
|
|
