I will first talk about three scientists: Sir Francis Bacon, Nicolaus Copernicus, and last but not least, Galileo Galilei. All three scientists have made many contributions to the world of science. The first of the three scientists I will talk about is Sir Francis Bacon. Sir Bacon was born in London in 1561. At the age of 12 he entered law school at Trinity College, Cambridge. He held numerous positions in the British government, from assistant ambassador to the French ambassador to appointed Lord Chancellor. Sir Bacon encouraged investigators to conduct experiments, promote useful and practical things for man's life. He promoted three themes: the progression of learning: “fantastic learning”, “controversial learning” and “sensitive learning”. The next person to discuss is Nicolaus Copernicus, he was an astronomer and mathematician. Copernicus proposed that the sun was stationary and that the earth revolved around it. His models made the distance from the sun comparable to the size of the planet. Copernicus' concept had a misconception that his model would eliminate epicycles, but in reality it simply limited the use of models. However, Copernicus' model showed that all planets had circular rather than elliptical orbits. The third and final scientist is Galileo Galilei. Galileo introduced the theory of proving or disproving other scientific theories by conducting experiments and observing the results. In 1593 he invented the first scientific measuring instrument and called it a thermometer. Galileo also made some improvements to the telescope. Finding the specific gravity of an object means weighing that object in water. He had also shown that objects accelerate... middle of paper... relative to each other. Furthermore, religious authorities should not have the authority to regulate what is taught in public schools around the world. Works Cited Tredennick, H. (2003). Phaedo-Wisdom and the Soul. The last days of Socrates (pp. 97-199). London: Penguin Books.Klein, Juergen, "Francis Bacon", The Stanford Encyclopedia of Philosophy (Summer 2011 edition), Edward N. Zalta (ed.), URL = .Rabin, Sheila, "Nicolaus Copernicus", The Stanford Encyclopedia of Filosofia (Fall 2010 edition), Edward N. Zalta (ed.), URL = ."Galilei, Galileo (1564-1642)." World of Earth Sciences. Ed. K. Lee Lerner and Brenda Wilmoth Lerner. Gale Cengage, 2003. eNotes.com. 2006. 25 Sep 2011galilei-galileo>