are the pictures related about the pictures on the astronomy page undeciphered?

[bi3mw]

I would like to know a little bit why it came to be expressed that way..

I found the following text excerpt in an article on JSTOR. The text presupposes a certain specialized knowledge, I do not understand it completely. To understand it requires some research, e.g: Who is Timosthenes ?, Who is Agathemer ? ( etc. ).

Die antiken Grundlagen der mittelalterlichen Seekarten ( german title, in English: The ancient bases of the medieval nautical charts )

Author(s): Richard Uhden
Source: Imago Mundi , 1935, Vol. 1 (1935), pp. 1-19
Published by: Taylor & Francis, Ltd

The earliest example is the so-called wind rose of Timosthenes, about which again Agathemer gives the most detailed information. If one takes the opening words of the short summary in the sense discussed above, then they would read in the translation: Timosthenes, who made sea charts, reports about twelve winds" etc. The system of the winds appears to the Agathemer as the most remarkable at the testimony of the cartographic activity of Timosthenes. For us, the report reveals a map of the world arranged according to nautical criteria, which must have satisfied the highest requirements which were made in the time before Dikaearch to a comprehensive representation of the Oikumene. Timosthenes' distribution of countrys and peoples according to a 12-wind system starts from Rhodes as center; here their rays intersect at angles of 30°. It is the earliest, clearly recognizable archetype in the development of nautical charts.

You are not allowed to view links. Register or Login to view.

You are not allowed to view links. Register or Login to view.

Timosthenes of Rhodes (Greek: Τιμοσθένης) (fl. 270 BCE) was a Greek navigator, geographer and admiral in Ptolemaic navy. He is credited with inventing the system of twelve winds that became known as the Greek 12-wind rose.

Timosthenes is also of particular importance because he is perhaps the first of the Greek geographers to go beyond treating the winds as merely meteorological phenomena and begin to view them properly as points of geographical direction. It is thanks to the Greco-Roman physician and geographer Agathemeros (flourished around 250 AD) that Timosthenes' wind table has been preserved, at least as a fragment. According to him, Timosthenes assigns geographical regions and peoples to each of the 12 winds - relative to Rhodes.

The wind rose of Timosthenes is similar to that of Aristotle.
   

edit:

Look at page 153:

You are not allowed to view links. Register or Login to view.


   

Here the representation of a (Ptolemaic) world map from 1503 with well recognizable 12 winds ( see last post ):
You are not allowed to view links. Register or Login to view.