Talk:Ptolemy

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Life era: circa 150 CE or perhaps 300 BCE?[edit]

What other sources besides a modern book exist about the times that he lived in, and how was that determined? I remember reading (perhaps in Moris' book about the history of Math?) that he lived and died circa 300 BC! Thanksפשוט pashute ♫ (talk) 10:35, 29 March 2017 (UTC)

In Chapter 5 of Book 12 of the Almagest Ptolemy wrote that he observed oppositions of Saturn in years 11 and 17 of the emperor Hadrian's reign, and in Chapter 1 of Book 10 he wrote that he made observations of Venus in year 14 of Antoninus Pius's reign. Thus the span of his adult life must have encompassed the years 128 AD and 152 AD. I doubt if there are any professional historians who have suggested he was alive at any time before Christ, let alone anywhere near 300 BC.
David Wilson (talk · cont) 14:22, 29 March 2017 (UTC)
It just occurred to me that what you remember reading might have been about Ptolemy I Soter, one of Alexander the Great's generals, who established himself as Pharaoh of Egypt after Alexander's death, founded the Ptolemaic dynasty, and turned Alexandria into a centre of Greek culture, where the famous library was established either by this Ptolemy, or by his son, Ptolemy II Philadelphus. The pharaoh Ptolemy I did indeed flourish around 300 BC, but he is a completely different person from the astronomer who is the subject of this article.
David Wilson (talk · cont) 12:58, 30 March 2017 (UTC)
I have to agree with David J Wilson that you, User:Pashute, have got Claudius Ptolemy confused with the line that descended from one of Alexander the Great's generals. As it appears to be common for many people to be confused about the 2 unrelated heritages, Claudius Ptolemy was a scholar that was to history's knowledge, unrelated and unconnected with the Ptolemaic dynasty of which Cleopatra was the last of the line of ascent. While it is a common misunderstanding, you clearly have the two historical personages confused... As Claudius Ptolemy is one of the most vetted scholars in Western Civilization, the corroboration of his dates, are quite established. There are literally hundreds of papers and books that have been published on various aspects of his work, in a number of languages, simply, if for no other reason, because of the enormous influence and impact he had on the development of Western and Arabic Civilization, from his publishing outset until the Late Middle Ages... Stevenmitchell (talk) 07:31, 19 December 2018 (UTC)

External links modified[edit]

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elevation of the north pole for a few cities[edit]

What is meant by the "elevation of the north pole for a few cities" is this the distance to the North pole? Is this the angle that points to the North star? Can someone clear this up. --RAN (talk) 04:11, 20 May 2018 (UTC)
 Done

"North pole" here means "north celestial pole". Since this concept is likely to be unfamiliar to many readers, I have added a footnote briefly explaining it, and a wikilink to the relevant Wikipedia article.
David Wilson (talk · cont) 10:42, 20 May 2018 (UTC)

Recent reverts - language template[edit]

I accidentally misclicked - the reason I reverted this is because the language template is for modern greek, not koine [1] - can a regular editor here please confirm if it would be correct to change the language template to ancient greek? Seraphim System (talk) 23:56, 30 August 2018 (UTC)

From the Greek Wikipedia article it would appear that the spelling used in this article is the correct modern Greek spelling of the name. I therefore see no good reason to change the template—although I guess that if this is also the correct spelling in Koine Greek (which I do not know), it would do no harm to indicate that this is the case.
David Wilson (talk · cont) 03:42, 31 August 2018 (UTC)

Poet?[edit]

The categorisation of Ptolemy as a poet appears to be based upon the attribution to him of a single epigram appearing in the Greek Anthology. According to Otto Neugebauer, modern scholars "tend to agree" with the attribution, but he himself merely says that the epigram appears in manuscripts of the Almagest "[a]t least from the third century onwards", thus implying that there are some early manuscripts from which it is absent, and thus casting some doubt on the attribution. In any case, authorship of just a single epigram is hardly sufficient to make one a poet, so I'm going to remove that categorisation from the lead.
David Wilson (talk · cont) 23:22, 19 December 2018 (UTC)