Scientist Timeline

Euclid: 323–283 BC Father of Geometry

Seleucus of Seleuci 190-159BC Heliocentric theory First to assume the universe to be infinite

Ptolemy 90-168 Geocentric (Earth-centred) model

Ibn Al Haytham 965-1040 Made contributions to the principle of optics and visual perception

Robert Grosseteste 1175-1253 Translations of Aristotle's writings and works of Greek theology

Copernicus 19 Feb 1473-24 May 1543 Formulated a model of the universe that placed the sun rather than the Earth at the center of the universe

Invention of telescopes 17th century

Galileo 1562-1642 The Law of Falling Bodies

Kepler 27 Dec 1571-Nov 15 1630 Law of planetary motion

Robert Hooke 28 July 1645 - 3 March 1703 Hooke's law

Isaac Newton 1643-1727 Newton's Law Law of universal gravitation Calculus

Antoine Lavoisier 17 May 1749 - 8 May 1794 Wrote the first extensive list of elements

Edward Jenner 17 May 1749 - 26 Jan 1823 Pioneer of smallpox vaccine

William Herschel 15 Nov 1738 - 25 Aug 1822 Discovery of infrared radiation in sunlight

John Dalton 6 Sep 1766 - 27 July 1844 Pioneered studies of atomic theory Studies in color blindness

Georg Ohm 16 Mar 1789 - 6 July 1854 Ohm's Law

Amedeo Avogadro's 9 Aug 1776 - 9 July 1856 Molecular theory - Avogadro's Law

Michael Faraday 22 Sep 1791 - 25 Aug 1867 Electromagnetism (principles underlying electromagnetic induction, diamagnetism and electrolysis)

Lord Kelvin 26 June 1824 - 17 Dec 1907 Mathematical analysis of electricity and formulation of the first and second laws of thermodynamics Refined absolute zero

Charles Darwin 12 Feb 1809 - 19 Apr 1882 <Origin of species> <Theory of evolution>

Louis Pastuer 27 Dec 1822 - 28 Sep 1895 Principles of vaccination microbial fermentation and pasteurization

James Clerk Maxwell 13 June 1831 - 5 Nov 1879 Formulate the classical theory of electromagnetic radiation

Gregor Mendel 20 July 1822 - 6 Jun 1884 Rediscovery of Mendel's work

Dmitri Meudeleev 8 feb 1834 - 2 feb 1907 Periodic law: Periodic table of elements