alb3802739

Ptolemy, Alexandria Observatory, 2nd Century

Claudius Ptolemy (AD c100-170), Greek-Egyptian astronomer, geographer and mathematician at his observatory in Alexandria, Egypt. Among the instruments seen here are Ptolemy's rulers (lower center) and a copper disc (far right), which he used to demonstrate the law of reflection. At this observatory Ptolemy made the observations that supported Earth-center models of solar and planetary motion. This view dominated astronomical thinking until the mid 16th century. Engraving from Vies des Savants Illustres (1877).

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Title: Ptolemy, Alexandria Observatory, 2nd Century

Caption: Claudius Ptolemy (AD c100-170), Greek-Egyptian astronomer, geographer and mathematician at his observatory in Alexandria, Egypt. Among the instruments seen here are Ptolemy's rulers (lower center) and a copper disc (far right), which he used to demonstrate the law of reflection. At this observatory Ptolemy made the observations that supported Earth-center models of solar and planetary motion. This view dominated astronomical thinking until the mid 16th century. Engraving from Vies des Savants Illustres (1877).

Category: SCIENCE • Science: History

Credit: Album / Science Source / New York Public Library

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Image size: 3796 × 2848 px | 30.9 MB

Print size: 32.1 × 24.1 cm | 1494.5 × 1121.3 in (300 dpi)

Keywords: 1ST CENTURY • 2ND CENTURY COLORIZED • ALEXANDRIA • ANCIENT • ANTIQUITY • ARISTOTELIAN NATURAL PHILOSOPHY • ASTROLOGER • ASTROLOGIA • ASTROLOGY • ASTRONOMER • ASTRONOMIA • ASTRONOMY • AUTHOR • CELEBRITIES • CELEBRITY • CITIZEN OF EGYPT • CITIZEN, ROMAN • CLAUDIUS PTOLEMAEUS • CLAUDIUS PTOLEMY • COSMOLOGIST • COSMOLOGY • ENHANCEMENT • FAMOUS PEOPLE • FAMOUS • FIGURE • GEOCENTRIC UNIVERSE • GEOGRAFIA • GEOGRAPHER • GEOGRAPHY • GREEK • GREEK-ROMAN • HARMONICS • HISTORIC • HISTORICAL • HISTORY • HOROSCOPIC ASTROLOGY • IMPORTANT • MALE • MAN • MATH • MATHEMATIC • MATHEMATICAL • MATHEMATICIAN • MATHEMATICS • MEN • NATURAL PHILOSOPHY • NOTABLE • PEOPLE • PERSON • PERSONALITIES • PERSONALITY • POET • POLYMATH • PTOLEMAIC • PTOLEMY • QUADRANT • ROMAN CITIZEN • SCI • SCIENCE AND TECHNOLOGY WISSENSCHAFT SCI • SCIENCE • SCIENCE-TECHNOLOGY • SCIENCE: HISTORY • SCIENCE_AND_TECHNOLOGY WISSENSCHAFT SCI • THINKER • WELL-KNOWN • WORLD GEOGRAPHY • WRITER