PHIL 120 Lecture Notes - Tychonic System, Ptolemaic Dynasty
Document Summary
Notes on reading pdf june 11, 2013 (part i) Slide 91: galileo and astronomy arrangement of earth, sun, planets, stars etc. Slide 97: part of real world investigated by theories belong to: copernican, ptolemaic, There could be a time when the earth is aligned with the sun, venus and mercury. Nonetheless, the sun doesn"t rotate on its own. It is said that ptolemaic not geocentric (?) Sun in the center, the earth orbit at its axis and at the same time around the sun. This model seems to represent what contemporary society believes. It is said that copernican not heliocentric (?) Prediction from copernican hypothesis: doesn"t disagree with observed retrograde motion. The earth is in the center of universe and then sun rotates around the earth. Prediction from tychonic hypothesis: doesn"t disagree with observed retrograde motion. Notes on reading pdf june 11, 2013 (part ii) Galileo attempts to investigate copernican and ptolemaic hypotheses.
