Thales One of the first true scientists James Clerk Maxwell Founder of Modern Physics Galileo Forced to recant belief in heliocentric system Ptolemy Proposed geocentric system Einstein Had 2 theories of relativity and was big in quantum mechanics Lavoisier Discovered Law of Mass Conservation Darwin Destroyed the idea of immutability of species Democritus Ancient Greek scientist who believed in atoms Grosseteste Considered the first modern scientist Copernicus Proposed the heliocentric system Aristotle Championed idea of spontaneous generation and responsible for it being believed for so long Newton One of the greatest scientists; developed laws of motion, universal gravity, and invented calculus Joule Demonstrated the First Law of Thermodynamics Dalton Developed first detailed atomic theory; known as founder of modern atomic theory Bohr Best known for his model of the atom; it was named after him Bacon Promoted use of Grossesteste's scientific method Lyell Took scientific view that earth of millions of years old Mendell Field of genetics is based on his work Faraday Known as Electrical Giant Planck Proposed that energy exists in tiny packets called quanta; known as father of quantum mechanics Imhoptep Ancient Egyptian renowned for his knowledge of medicine Who's Who in History of Science