#ptolemy — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #ptolemy, aggregated by home.social.
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University of Wisconsin Milwaukee: Digitized Copy of 1478 Ptolemy’s ‘Geography’ Available Online. “Thanks to the work of Digital Collections & Initiatives, the American Geographical Society Library has recently made available a digitized 1478 copy of Ptolemy’s Geography. The AGSL holds over 30 volumes from copies of Ptolemy’s Geography, with this digitization marking the tenth volume […]
https://rbfirehose.com/2026/04/27/university-of-wisconsin-milwaukee-digitized-copy-of-1478-ptolemys-geography-available-online/ -
University of Wisconsin Milwaukee: Digitized Copy of 1478 Ptolemy’s ‘Geography’ Available Online. “Thanks to the work of Digital Collections & Initiatives, the American Geographical Society Library has recently made available a digitized 1478 copy of Ptolemy’s Geography. The AGSL holds over 30 volumes from copies of Ptolemy’s Geography, with this digitization marking the tenth volume […]
https://rbfirehose.com/2026/04/27/university-of-wisconsin-milwaukee-digitized-copy-of-1478-ptolemys-geography-available-online/ -
University of Wisconsin Milwaukee: Digitized Copy of 1478 Ptolemy’s ‘Geography’ Available Online. “Thanks to the work of Digital Collections & Initiatives, the American Geographical Society Library has recently made available a digitized 1478 copy of Ptolemy’s Geography. The AGSL holds over 30 volumes from copies of Ptolemy’s Geography, with this digitization marking the tenth volume […]
https://rbfirehose.com/2026/04/27/university-of-wisconsin-milwaukee-digitized-copy-of-1478-ptolemys-geography-available-online/ -
University of Wisconsin Milwaukee: Digitized Copy of 1478 Ptolemy’s ‘Geography’ Available Online. “Thanks to the work of Digital Collections & Initiatives, the American Geographical Society Library has recently made available a digitized 1478 copy of Ptolemy’s Geography. The AGSL holds over 30 volumes from copies of Ptolemy’s Geography, with this digitization marking the tenth volume […]
https://rbfirehose.com/2026/04/27/university-of-wisconsin-milwaukee-digitized-copy-of-1478-ptolemys-geography-available-online/ -
University of Wisconsin Milwaukee: Digitized Copy of 1478 Ptolemy’s ‘Geography’ Available Online. “Thanks to the work of Digital Collections & Initiatives, the American Geographical Society Library has recently made available a digitized 1478 copy of Ptolemy’s Geography. The AGSL holds over 30 volumes from copies of Ptolemy’s Geography, with this digitization marking the tenth volume […]
https://rbfirehose.com/2026/04/27/university-of-wisconsin-milwaukee-digitized-copy-of-1478-ptolemys-geography-available-online/ -
One of my favorite atlas -- the 1513 Strasburg edition of Ptolemy's Geography, with maps by Martin Waldseemüller, printed by Johannes Schott, with some maps in color!!! - has been imaged by Osher map Library and is available online at https://oshermaps.org/map/4073.0184 (link to this page: Ptolemaic map of the ecumene)
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On a cloudy day in January, historian Ivan Malara sat in Italy’s National Central Library of Florence poring over seven 16th century printings of the ancient world’s most influential astronomy text.
The pages belonged to The #Almagest, in which second century polymath Claudius #Ptolemy described his vision of an Earth-centered cosmos.
As Malara flipped through the pages, he spotted something out of place.
Someone had transcribed Psalm 145 on an otherwise blank page—in handwriting reminiscent of a very, very famous Tuscan astronomer.
That book, Malara came to realize, had been extensively annotated by none other than Galileo #Galilei.
Malara’s discovery, described in a paper now under review at the Journal for the History of Astronomy, promises new insights into one of the most famous ideological transitions in the history of science: the moment when #Earth was thrust from the center of our #universe.
#science #astronomy #history
https://www.science.org/content/article/galileo-s-handwritten-notes-found-ancient-astronomy-text -
Alexander the Great's successors were wild
https://piefed.social/c/historymemes/p/1838107/alexander-the-great-s-successors-were-wild
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The many cousins of the Golden Ratio:
https://www.youtube.com/watch?v=cCXRUHUgvLI
#maths #GoldenRatio #mathematics #Mathologer #pentagon #heptagon #Ptolemy #Pythagoras -
Archaeoethnologica: The Iberian Peninsula in Ptolomeus Geography - Book / A Península Ibérica na Geografia de Ptolomeu - Livro
+INFO in: https://archaeoethnologica.blogspot.com/2024/07/a-peninsula-iberica-na-geografia-de.html
#AncientHistory #AncientGeography #Ptolemy #ClassicalSources #Linguistic #placename #books #openaccess #Iberia
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Archaeoethnologica: The Iberian Peninsula in Ptolomeus Geography - Book / A Península Ibérica na Geografia de Ptolomeu - Livro
+INFO in: https://archaeoethnologica.blogspot.com/2024/07/a-peninsula-iberica-na-geografia-de.html
#AncientHistory #AncientGeography #Ptolemy #ClassicalSources #Linguistic #placename #books #openaccess #Iberia
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Archaeoethnologica: The Iberian Peninsula in Ptolomeus Geography - Book / A Península Ibérica na Geografia de Ptolomeu - Livro
+INFO in: https://archaeoethnologica.blogspot.com/2024/07/a-peninsula-iberica-na-geografia-de.html
#AncientHistory #AncientGeography #Ptolemy #ClassicalSources #Linguistic #placename #books #openaccess #Iberia
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`During the second century AD, Claudius #Ptolemy described a 5-limit diatonic scale in his influential text on music theory #Harmonics, which he called "intense diatonic". Given ratios of string lengths 120, 112+1/2, 100, 90, 80, 75, 66+2/3, and 60, Ptolemy quantified the tuning of what would later be called the #Phrygian scale (equivalent to the major scale beginning and ending on the third note) – 16:15, 9:8, 10:9, 9:8, 16:15, 9:8, and 10:9. `
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`During the second century AD, Claudius #Ptolemy described a 5-limit diatonic scale in his influential text on music theory #Harmonics, which he called "intense diatonic". Given ratios of string lengths 120, 112+1/2, 100, 90, 80, 75, 66+2/3, and 60, Ptolemy quantified the tuning of what would later be called the #Phrygian scale (equivalent to the major scale beginning and ending on the third note) – 16:15, 9:8, 10:9, 9:8, 16:15, 9:8, and 10:9. `
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#EvenBananas - #Neutrinos from the #BigBang (#Fermilab)
https://www.youtube.com/watch?v=vbMsye0q17w&ab_channel=Fermilab
#Banana #Bananas #Science #Physics #Astrophysics #Cosmology #TheBigBang #Neutrino #NeutrinoPhysics #CMB #CosmicMicrowaveBackground #NeutrinoOscillation #NeutrinoOscillations #QuantumPhysics #QuantumMechanics #QM #RedShift #PTOLEMY
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🕎 #Hanukkah #history #facts —
Alexander the Great inadvertently set the stage for the events of Hanukkah? Do you know how?By dying in 323 BCE without a succession plan. After his death, three Greek generals — #Antigonus, #Ptolemy, and #Seleucus — divvied up Alexander's conquered lands, each establishing a dynasty. It was a Seleucid leader in Syria who, some generations later, desecrated the #Jewish #Temple in #Jerusalem, prompting the #Maccabees to rebel.
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🕎 #Hanukkah #history #facts —
Alexander the Great inadvertently set the stage for the events of Hanukkah? Do you know how?By dying in 323 BCE without a succession plan. After his death, three Greek generals — #Antigonus, #Ptolemy, and #Seleucus — divvied up Alexander's conquered lands, each establishing a dynasty. It was a Seleucid leader in Syria who, some generations later, desecrated the #Jewish #Temple in #Jerusalem, prompting the #Maccabees to rebel.
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🕎 #Hanukkah #history #facts —
Alexander the Great inadvertently set the stage for the events of Hanukkah? Do you know how?By dying in 323 BCE without a succession plan. After his death, three Greek generals — #Antigonus, #Ptolemy, and #Seleucus — divvied up Alexander's conquered lands, each establishing a dynasty. It was a Seleucid leader in Syria who, some generations later, desecrated the #Jewish #Temple in #Jerusalem, prompting the #Maccabees to rebel.
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🕎 #Hanukkah #history #facts —
Alexander the Great inadvertently set the stage for the events of Hanukkah? Do you know how?By dying in 323 BCE without a succession plan. After his death, three Greek generals — #Antigonus, #Ptolemy, and #Seleucus — divvied up Alexander's conquered lands, each establishing a dynasty. It was a Seleucid leader in Syria who, some generations later, desecrated the #Jewish #Temple in #Jerusalem, prompting the #Maccabees to rebel.