#ptolemy — Public Fediverse posts

For those with an interest in ancient Egyptian history (and who doesn't?!), you may know of the Ptolemaic kingdom, an ancient Greek royal dynasty based in Egypt during the Hellenistic period. Founded in 305 BCE by Ptolemy I Soter, a general of Alexander the Great, it lasted nearly 300 years until the death of Cleopatra VII in 30 BCE: https://en.wikipedia.org/wiki/Ptolemaic_Kingdom

William E. Daehn has written a new book: Historical and Numismatic Timeline of the Ptolemaic Empire which looks quite interesting (though doesn't appear to be available outside the US yet). See this article in E-Sylum: https://www.coinbooks.org/v29/esylum_v29n32.html#article5

#Numismatics #History #Histodons #CoinCollecting #AncientEgypt #AncientCoin #AncientCoins #Ptolemy @numismatics @histodons

"Nice country. I think I'll take it."

https://piefed.social/c/historymemes/p/2127750/nice-country-i-think-i-ll-take-it

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 […]

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)

#maps #cartography #maphistory #ptolemy #geography

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

PROTIP: It was

https://piefed.social/c/historymemes/p/1754834/protip-it-was

PROTIP: It was

https://piefed.social/c/roughromanmemes/p/1754826/protip-it-was

Cleopatra's four children were born into power but died in the shadow of Rome. Only one survived to rule. This is how Egypt's final royal line was erased.
#Cleopatra #Ptolemy #Caesarion #AncientEgypt #SeleneII #RomanEmpire #JubaII #EgyptHistory #DynastyFall #Octavian#AncientHistory #Storytelling #DidYouKnow #HistoryFacts #DocumentaryShort #WeirdHistory
Read More:https://www.ancient-origins.net/videos/cleopatras-children-video-0020523

How the oldest science in the world flourished in Toledo 1,000 years ago.

An international conference on the origins of galaxies pays tribute to the pioneering scientific cooperation between Muslims, Jews, and Christians that took place in Spain at the end of the Middle Ages.

https://mediafaro.org/article/20250515-how-the-oldest-science-in-the-world-flourished-in-toledo-1000-years-ago?mf_channel=mastodon&action=forward

#Toledo #Science #Astronomy #Galaxies #Spain #Muslims #Jews #Christians #Ptolemy #AlZarqali #Copernicus #Almagest #MiddleAges #History

@fesshole
That's not weird. This is weird...
#genealogy #Ptolemy

At our February meeting (Sunday 2nd, ONLINE via Zoom) we welcome back Professor Lloyd Llwellyn-Jones, who will give a talk on "The Cleopatras: the Forgotten Queens of Egypt" (1/4)

#ancientEgypt #egyptology #ancientHistory #cleopatra #ptolemy

Now we need to look back in time to the classical understanding of the world. How better to do that than with Ptolemy's map of the world known to him at the time? None of Ptolemy's maps survived into the medieval world, but his list of places - a sort of gazetteer - did. 8000 places with his estimates of their latitude and longitude, from which his maps have been reconstructed. See the similarity? No, nor do I, but Schiaparelli found a way to link them. #maps #Mars #Ptolemy

The many cousins of the Golden Ratio:
https://www.youtube.com/watch?v=cCXRUHUgvLI
#maths #GoldenRatio #mathematics #Mathologer #pentagon #heptagon #Ptolemy #Pythagoras

`Epicycles are often cited as one of the biggest problems with the Ptolemaic #geocentric model. And that is precisely what Copernicus is taking aim at here. That’s not to say that Copernicus was fundamentally against epicycles. Indeed, his own adherence to uniform circular motion forced him to include #epicycles in his model. But what #Copernicus is criticizing here is the size demanded by the Ptolemaic model for #Venus in particular.`

https://www.universetoday.com/164227/why-did-copernicus-reject-geocentrism/#more-164227

#Ptolemy #Heliocentric #astronomy

`It is the Prime Mover’s imperceptibility that #Ptolemy highlights in his description...

"Now the first cause of the first motion of the universe, if one considers it simply, can be thought of as an invisible and motionless deity and the division [of theoretical philosophy] concerned with investigating this [can be called] ‘theology’, since this kind of activity, somewhere up in the highest reaches of the universe, can only be imagined, and is completely separated from perceptible reality"`

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

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

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

`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. `

https://en.wikipedia.org/wiki/Just_intonation#History

`The Pythagoreans believed that the mathematics of music should be based on only the one specific ratio of 3:2, the perfect fifth, and believed that tunings mathematically exact to their system would prove to be melodious..#Ptolemy believed that musical scales and tunings should in general involve multiple different ratios arranged to fit together evenly into smaller tetrachords (combinations of four pitch ratios which together make a perfect fourth) and octaves`

https://en.wikipedia.org/wiki/Ptolemy#Music

`The Prime Mover is imperceptible, physical objects are perceptible by only one sense, and mathematical objects are perceptible by more than one sense. In this way, #Ptolemy uses epistemological criteria to determine an object’s ontological category—whether it is theological, physical, or mathematical`

https://dam-oclc.bac-lac.gc.ca/download?is_thesis=1&oclc_number=1032884543&id=22241d10-5b2e-47cd-acd4-db2a36a6a886&fileName=Feke_Jacqueline_A_200906_PhD_thesis.pdf

How One of Science’s Biggest Errors Persisted for 1,500 Years.

Ptolemy’s compendium, later known as the Almagest, dominated Western astronomy for 15 centuries. It was also wrong, and it took the fall of an empire to fix it.

https://www.atlasobscura.com/articles/ptolemy-geocentrism-almagest-copernicus

#Ptolemy #astronomy

#TIL #PtolemyClaudius wasn’t the #Ptolemy1Soter that built the Library of Alexandria.

#Ptolemy1 started the Greek rule of Egypt that ended with #CleopatraVII, who also wasn’t the only #Cleopatra.

#Ptolemy Claudius (aka Claudius Ptolemaeus) was the early scientist I always heard about in science classes in college.

I also learned the name Ptolemy comes from the Greek term for “war”.

Ptolemy (name) - Wikipedia

https://en.wikipedia.org/wiki/Ptolemy_(name)

I hope everyone upset about #cleopatra #netflix who hasn’t seen #HBO’s excellent miniseries #Rome watches it asap. It never claims to be anything but a drama & even though it portrays actual people in a fictional way it gets closer to historical accuracy ( especially Cleopatra ) than #netflix ridiculous insulting #culturalappropriation POS. #Ptolemy #hellenism #egypt #africa #alexander #GreekQueens