1. Hillary Rebollar and Emery Reed Period 5

2.  Biography  Claudius Ptolemaeus  100-170 CE  Alexandria, Egypt of Roman Empire  astronomer, geographer, and mathematician  not much is known about his life Ptolemy, the Astronomer

3.  Astronomy at the Time  religion  geocentric universe  Earth at center, immobile  Heavens represent the Universe  perfect spheres, movements of objects are uniform  devices for observation  Zodiac Depiction of Ptolemy observing the night sky with a quadrant

4.  Contributions  Ptolemaic System Model  Almagest  Consolidate Greek works  Tetrabiblos Spheres of the Universe and Heaven

5.  Ptolemaic System  explained the irregular motion of planets in the sky  planets move on epicycles  Earth has an eccentric position  stars have own “celestial sphere” Labeled diagram of Ptolemaic ideas

6. Ptolemaic System: Video http://www.britannica.com/EBchecked/media/13594/Ptolemys-theory-of-the- solar-system

7.  Almagest  150 CE  record of astronomical findings and observations  basic “textbook” for astronomy  divided into 13 books  background knowledge, the Sun, the Moon, tools, eclipses, stars, and planets  work with stars influenced by Hipparchus Almagest pages

8.  Ptolemy’s Final Influence  geocentric explanation (Ptolemaic System) used far beyond his time  ideas not challenged for 1300 years  recorded observations and ideas that continue to be studied  Almagest  preserved  design of planetariums today based on a Ptolemaic model and non-moving Earth Planetarium dome design, influenced by Ptolemaic ideals

9.  Department of Physics and Astronomy. "The Ptolemaic Model." Polaris Project. Iowa State University, 2001. Web. 9 Sept. 2014.. The Editors of Encyclopedia Britannica. "Almagest (work by Ptolemy)." Encyclopedia Britannica Online. Encyclopedia Britannica, n.d. Web. 9 Sept. 2014.. JOC/EFR. "Claudius Ptolemy." Ptolemy Biography. University of St. Andrews at Scotland, Apr. 1999. Web. 9 Sept. 2014.. Jones, Alexander Raymond. "Ptolemaic System." Encyclopedia Britannica Online. Encyclopedia Britannica, n.d. Web. 9 Sept. 2014.. Jones, Alexander Raymond. "Ptolemy." Encyclopedia Britannica Online. Encyclopedia Britannica, 6 Jan. 2014. Web. 9 Sept. 2014.. Mahoney, M. S. "Ptolemaic Astronomy in the Middle Ages." Princeton University. Princeton University, n.d. Web. 9 Sept. 2014.. Bibliography: Information

10.  Department of Physics and Astronomy. Equant. Digital image. Polaris Project. Iowa State University, n.d. Web. 10 Sept. 2014.. Department of Physics and Astronomy. "The Ptolemaic Model." Polaris Project. Iowa State University, 2001. Web. 9 Sept. 2014.. Early Depiction of Ptolemaic System. Digital image. Ptolemaic System. Google Sites, n.d. Web. 10 Sept. 2014.. The Editors of Encyclopædia Britannica. "Almagest (work by Ptolemy)." Encyclopedia Britannica Online. Encyclopedia Britannica, n.d. Web. 9 Sept. 2014.. Encyclopedia Britannica Inc. Spherical Universe. Digital image. Encyclopedia Britannica Online. Encyclopedia Britannica, n.d. Web. 9 Sept. 2014.. JOC/EFR. "Claudius Ptolemy." Ptolemy Biography. University of St. Andrews at Scotland, Apr. 1999. Web. 9 Sept. 2014.. Jones, Alexander Raymond. "Ptolemaic System." Encyclopedia Britannica Online. Encyclopedia Britannica, n.d. Web. 9 Sept. 2014.. Jones, Alexander Raymond. "Ptolemy." Encyclopedia Britannica Online. Encyclopedia Britannica, 6 Jan. 2014. Web. 9 Sept. 2014.. Magruder, Kerry. Almagest. Digital image. OU History of Science Collections. WordPress, n.d. Web. 10 Sept. 2014.. Mahoney, M. S. "Ptolemaic Astronomy in the Middle Ages." Princeton University. Princeton University, n.d. Web. 9 Sept. 2014.. Ptolemy: Theory of the Solar System. Dir. Encyclopedia Britannica Inc. Encyclopedia Britannica Online. Encyclopedia Britannica, n.d. Web. 10 Sept. 2014.. SFSU Astronomy. Planetarium. Digital image. SFSU Astronomy. SFSU Astronomy, n.d. Web. 10 Sept. 2014.. Wikimedia. Ptolemaic System. Digital image. Wikimedia. Wikipedia, n.d. Web. 10 Sept. 2014.. Wikipedia. Ptolemy. Digital image. Wikipedia. Wikipedia, Sept. 2014. Web. 10 Sept. 2014.. Wikipedia. Ptolemy with Quadrant. Digital image. Wikipedia. Wikipedia, n.d. Web. 10 Sept. 2014.. Bibliography: Images and Video