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[[file:Ancient 450 AD.docx]] <- Ancient 450 AD-1875
====1875-1950   ====

Ancient 450 AD+ Before

 * ====Aristotle ====
 * ====Democritus ====

 1700-1800 

 * ====Isaac Newton ====
 * ====Henry Cavendish  ====
 * ==== <span style="font-family: 'Cambria','serif';">James Watts <span style="color: windowtext; font-family: 'Cambria','serif'; line-height: 150%;"> ====

<span style="color: #000000; font-family: 'Lucida Sans Unicode','Lucida Grande',sans-serif;"> 1800-1875

 * ====<span style="color: #000000; font-family: 'Lucida Sans Unicode','Lucida Grande',sans-serif;">John Dalton ====
 * ====<span style="color: #000000; font-family: 'Lucida Sans Unicode','Lucida Grande',sans-serif;">Friedrich August Kekule von Stradonitz ====
 * ====<span style="color: #000000; font-family: 'Lucida Sans Unicode','Lucida Grande',sans-serif;">James Clerk Maxwell ====
 * ====<span style="color: #000000; font-family: 'Lucida Sans Unicode','Lucida Grande',sans-serif;">Alfred Nobel ====

<span style="color: #000000; font-family: 'Lucida Sans Unicode','Lucida Grande',sans-serif;"> 1875-1900

 * ====<span style="color: #000000; font-family: 'Lucida Sans Unicode','Lucida Grande',sans-serif;">Wilhelm C. Roentgen ====
 * ====<span style="color: #000000; font-family: 'Lucida Sans Unicode','Lucida Grande',sans-serif;">Henri Becquerel ====
 * ====<span style="color: #000000; font-family: 'Lucida Sans Unicode','Lucida Grande',sans-serif;">Ernest Rutherford ====
 * ====<span style="color: #000000; font-family: 'Lucida Sans Unicode','Lucida Grande',sans-serif;">JJ Thomson ====

<span style="color: #000000; font-family: 'Lucida Sans Unicode','Lucida Grande',sans-serif;"> 1900-1915

 * ====<span style="color: #000000; font-family: 'Lucida Sans Unicode','Lucida Grande',sans-serif;">Niels Bohr ====
 * ====<span style="color: #000000; font-family: 'Lucida Sans Unicode','Lucida Grande',sans-serif;">Marie Curie ====
 * ====<span style="color: #000000; font-family: 'Lucida Sans Unicode','Lucida Grande',sans-serif;">Robert A. Millikan ====

<span style="color: #000000; font-family: 'Lucida Sans Unicode','Lucida Grande',sans-serif;"> 1915-1950

 * ====<span style="color: #000000; font-family: 'Lucida Sans Unicode','Lucida Grande',sans-serif;">James Chadwick ====
 * ====<span style="color: #000000; font-family: 'Lucida Sans Unicode','Lucida Grande',sans-serif;">Werner Heisenbergue ====
 * ====<span style="color: #000000; font-family: 'Lucida Sans Unicode','Lucida Grande',sans-serif;">Erwin Schrodinger ====

daltons model, rutherford bohl model, plum pudding model planetary model and electron cloud model