Ptolemy
Hillary Rebollar and Emery ReedPeriod 5
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
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
Contributions
Ptolemaic System Model
Almagest Consolidate Greek
works Tetrabiblos
Spheres of the Universe and Heaven
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
Ptolemaic System: Videohttp://www.britannica.com/EBchecked/media/13594/Ptolemys-theory-of-the-solar-system
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
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
Department of Physics and Astronomy. "The Ptolemaic Model." Polaris Project. Iowa State University, 2001. Web. 9 Sept. 2014. <http://www.polaris.iastate.edu/EveningStar/Unit2/unit2_sub1.htm>.The Editors of Encyclopedia Britannica. "Almagest (work by Ptolemy)." Encyclopedia
Britannica Online. Encyclopedia Britannica, n.d. Web. 9 Sept. 2014. <http://www.britannica.com/EBchecked/topic/16707/Almagest>.JOC/EFR. "Claudius Ptolemy." Ptolemy Biography. University of St. Andrews at Scotland,
Apr. 1999. Web. 9 Sept. 2014. <http://www-history.mcs.st-and.ac.uk/Biographies/Ptolemy.html>.Jones, Alexander Raymond. "Ptolemaic System." Encyclopedia Britannica Online. Encyclopedia Britannica, n.d. Web. 9 Sept. 2014. <http://www.britannica.com/EBchecked/topic/482079/Ptolemaic-system>.Jones, Alexander Raymond. "Ptolemy." Encyclopedia Britannica Online. Encyclopedia
Britannica, 6 Jan. 2014. Web. 9 Sept. 2014. <http://www.britannica.com/EBchecked/topic/482098/Ptolemy>.Mahoney, M. S. "Ptolemaic Astronomy in the Middle Ages." Princeton University. Princeton University, n.d. Web. 9 Sept. 2014. <https://www.princeton.edu/~hos/mike/texts/ptolemy/ptolemy.html>.
Bibliography: Information
Department of Physics and Astronomy. Equant. Digital image. Polaris Project. Iowa State University, n.d. Web. 10 Sept. 2014. <http://www.polaris.iastate.edu/EveningStar/Unit2/Graphics/equant.gif>.Department of Physics and Astronomy. "The Ptolemaic Model." Polaris Project. Iowa State University, 2001. Web. 9 Sept. 2014. <http://www.polaris.iastate.edu/EveningStar/Unit2/unit2_sub1.htm>.Early Depiction of Ptolemaic System. Digital image. Ptolemaic System. Google Sites, n.d. Web. 10 Sept. 2014. <http://abyss.uoregon.edu/~js/images/aristotelian_cosmo.gif>.The Editors of Encyclopædia Britannica. "Almagest (work by Ptolemy)." Encyclopedia Britannica Online. Encyclopedia Britannica, n.d. Web. 9 Sept. 2014. <http://www.britannica.com/EBchecked/topic/16707/Almagest>.Encyclopedia Britannica Inc. Spherical Universe. Digital image. Encyclopedia Britannica Online. Encyclopedia Britannica, n.d. Web. 9 Sept. 2014. <http://media- 2.web.britannica.com/eb-media/56/14356-004-37B9DA8D.jpg>.JOC/EFR. "Claudius Ptolemy." Ptolemy Biography. University of St. Andrews at Scotland, Apr. 1999. Web. 9 Sept. 2014. <http://www-history.mcs.st-and.ac.uk/Biographies/Ptolemy.html>.Jones, Alexander Raymond. "Ptolemaic System." Encyclopedia Britannica Online. Encyclopedia Britannica, n.d. Web. 9 Sept. 2014. <http://www.britannica.com/EBchecked/topic/482079/Ptolemaic-system>.Jones, Alexander Raymond. "Ptolemy." Encyclopedia Britannica Online. Encyclopedia Britannica, 6 Jan. 2014. Web. 9 Sept. 2014. <http://www.britannica.com/EBchecked/topic/482098/Ptolemy>.Magruder, Kerry. Almagest. Digital image. OU History of Science Collections. WordPress, n.d. Web. 10 Sept. 2014. <http://hos.ou.edu/images/jpg-100dpi- 5in//02LateAncient/Ptolemy/1549/Ptolemy-1549-000-tp.jpg>.Mahoney, M. S. "Ptolemaic Astronomy in the Middle Ages." Princeton University. Princeton University, n.d. Web. 9 Sept. 2014. <https://www.princeton.edu/~hos/mike/texts/ptolemy/ptolemy.html>.Ptolemy: Theory of the Solar System. Dir. Encyclopedia Britannica Inc. Encyclopedia Britannica Online. Encyclopedia Britannica, n.d. Web. 10 Sept. 2014. <http://www.britannica.com/EBchecked/media/13594/Ptolemys-theory-of-the-solar-system>.SFSU Astronomy. Planetarium. Digital image. SFSU Astronomy. SFSU Astronomy, n.d. Web. 10 Sept. 2014. <http://www.physics.sfsu.edu/astronomy/planetarium/planetarium.jpg>.Wikimedia. Ptolemaic System. Digital image. Wikimedia. Wikipedia, n.d. Web. 10 Sept. 2014. <http://upload.wikimedia.org/wikipedia/commons/4/47/Ptolemaic_system_2_(PSF).png>.Wikipedia. Ptolemy. Digital image. Wikipedia. Wikipedia, Sept. 2014. Web. 10 Sept. 2014. <http://upload.wikimedia.org/wikipedia/commons/0/0b/PSM_V78_D326_Ptolemy.png>.Wikipedia. Ptolemy with Quadrant. Digital image. Wikipedia. Wikipedia, n.d. Web. 10 Sept. 2014. <http://upload.wikimedia.org/wikipedia/commons/thumb/5/59/Ptolemy_Astrology_1564.jpg/640px-Ptolemy_Astrology_1564.jpg>.
Bibliography: Images and Video