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Posted by tzury 1 day ago

Galileo's handwritten notes found in ancient astronomy text(www.science.org)
119 points | 24 comments
macintux 8 hours ago|
I have had the experience of serendipitous discovery when researching relatively recent history. To find Galileo’s handwriting 400 years later, effectively engaging in both agreement and debate with Ptolemy through the latter’s work… even though he specifically was looking for it, it still must have been surreal.
divbzero 7 hours ago||
> even though he specifically was looking for it

The historian was looking for conceptual connections between Ptolemy and Galileo, but the discovery of Galileo’s handwriting in Ptolemy’s book seemed to be a surprise.

macintux 6 hours ago||
I interpreted the fact that he was reviewing multiple copies of the same text as him searching for Galileo’s notes, but I suppose it’s possible that the motivation was the possibility of discrepancies between printings.
Diederich 6 hours ago||
> I have had the experience of serendipitous discovery when researching relatively recent history.

I would really love to hear about this. (:

macintux 6 hours ago||
Nothing all that exciting, just pleasure from finding a photo in a local newspaper of my great-great-grandfather’s (approximately, I don’t remember the specifics at the moment) car being pulled by horses out of a local river, or researching a family name I found in a cemetery and finding interesting tidbits about their history.

Probably the most impressive effort I stumbled upon was a woman from rural Indiana who collected (and typed up) thousands of pages of local history & genealogy in the mid-20th century. Was interesting reading personal accounts of Morgan’s Raid, for example.

gignico 2 hours ago||
It’s unbelievable how that 16th century book looks like it is written in LaTeX. Or plain TeX, probably, given its age XD
cladopa 40 minutes ago||
Not that surprising if you consider that books before the Gutenberg printing press were artisans work of art that required years of work of specialists.

In other words: Today some of those will cost more than a Ferrari to make. They use Vellum paper that is much better that today's but require killing hundreds of animals each.

Only very rich people could afford that. I had access to European books collections of the 16th that are in Color, much much better than any normal book we have.

If you think about that it is normal. Color require more printing plates in a printer, but just changing your ink if you do it manually.

weinzierl 1 hour ago||
Not at all surprising. There were some "unshakable truths" in typesetting that basically held up from Gutenberg until the Internet came along. Knuth (partly through his friend Zapf) is well aware of them and respected them in TeX.

It's relatively recent that we've found out some of these "universal" rules might not have been so important all along and together with technology as another factor things changed.

teleforce 42 minutes ago||
Fun facts, the patron of Almagest Abassid Caliph Al-Ma'mun was also the founder of Baitul Hikmah in Baghdad that was aggressively translating important foreign manuscripts due to weight gold equivalence for Greek/Indian/etc manucsripts translation compensation [1],[2].

According to history, the Caliph once back off his plan of conquering Constantinople (that were later achieved by Ottoman Caliph Fatih) due the Roman (Byzantine) offered him an offer he cannot refused, the original copy of Ptolemy Almagest as important part of the truce arrangements. He certainly capable of overcoming and conquering the Constatinople since during his time, Afghanistan was conquered under Islamic rule for hundred of years that modern Russia and USA cannot achieved. The fact that his mother Marajil, was a princess originally from Afghanistan. This is where the popular saying that asserted only Afghanistan people can conquer Afghanistan. Point in case, the most recent Afghanistan conqurer was Mughal Empire, who was originated from Indian sub-continent Afghanistan. During his time, Al-Khwarizmi published his infamous Algebra book namely Kitāb al-Mukhtaṣar fī Ḥisāb al-Jabr wal-Muqābalah (The Concise Book of Calculation by Restoration and Balancing), where we got the word algebra, and from his name Al-Khwarizmi now we have the word "algorithm" [2].

In addition to having translation Baitul Hikmah in Baghdad, Iraq and in other Islamic knowledge center in Toledo Spain (before fall to Spanish Christian and started the European Renaissance), the Islamic civilization also engaged in contributing to science, math, astronomy, etc. Al-Haitham (Alhazen), the founder of optics, and he's also the founder of modern scientific methodology [3].

Having said that, there several Islamic astronomers (Arab/Persian/etc) already proposing against the geocentric idea that most probably that was inspired Galileo. I think he most probably did not come with the original idea of heliocentric model and the Islamic astromoners mosy probably have proposed it before Galileo, but he failed to credit them properly as normally practiced by European scientists at the time.

[1] al-Ma'mun:

https://en.wikipedia.org/wiki/Al-Ma%27mun

[2] Graeco-Arabic translation movement:

https://en.wikipedia.org/wiki/Graeco-Arabic_translation_move...

[3] Ibn al-Haytham:

https://en.wikipedia.org/wiki/Ibn_al-Haytham

darkwater 29 minutes ago|
> Al-Khwarizmi published his infamous algebra book

Math can be hard, but calling that book "infamous" is a bit too much... /s

behnamoh 5 hours ago||
That's not "ancient". That word often means thousand(s) of years ago.
kgeist 5 hours ago||
>The pages belonged to The Almagest, in which second century polymath Claudius Ptolemy described his vision of an Earth-centered cosmos.

Where's the article wrong?

jswelker 5 hours ago|||
I clicked just to make this same pedantic comment, fellow traveller.
ant6n 3 hours ago||
pedantry works best when correct.

"Ancient history is a time period from the beginning of writing and recorded human history through late antiquity."

Perhaps you are mixing up "ancient" and "prehistoric".

ffsm8 4 hours ago||
Not particularly important, but the title adding "handwritten" implies that they had non-handwritten notes too...
sjdrc 4 hours ago||
Or it implies they were handwritten by Galileo himself vs his words written by someone rlse
mock-possum 4 hours ago||
Dictated? Transcribed?
mrose11 6 hours ago||
What a wild find. Good for the historian.
ocean2 2 hours ago|
Galileo Galilei, and yet people still refer to him by his firstname alone. It's painful to read.

It is, as if we refer to Isaac and Albert when speaking about Gravity and Relativity.

pmontra 1 hour ago||
In Italy it's extremely usual to refer to the greatests of the great people of those ages by their given name: Leonardo, Galileo, Dante, Michelangelo. It's testament to their greatness. There is only one Dante that matters, so there is no need to add Alighieri but if you do nobody notices anything strange. It's only a bit redundant. Using only the surname would be unusual.
yapfrog 2 hours ago|||
https://en.wikipedia.org/wiki/Galileo_Galilei#Name

Surnames are optional in Italy at that time. Galileo is how he refers to himself and how people refer to him.

spockz 2 hours ago|||
There are many Isaacs and Alberts. How many notable Galileo(s, not to use Galilei) do we have?
9dev 2 hours ago||
His name works like "Bostoner from Boston", so it was reasonable for him at the time to refer to himself as just Bostoner.
srean 41 minutes ago||
I have always been intrigued by the similarity of Italian naming conventions and that of the Arabs and Persians.

Resident of, son of, father of, family of. Leonardo of Pisa of the family of Bonacci being another well known one.

I suppose it is not specific to those cultures and was a more widespread convention.