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