Astrolabe
DerdaKse
The astrolabe is a historical measurement instrument used in astronomical observations. Its applications include determining the positions of the Sun, Moon, planets, and stars. Additionally, it was used to calculate the local time and prayer times in Islam. The astrolabe was also employed in solving certain mathematical problems.
Western sources report that it was first discovered by Apollonius (240 BC) and Hipparchus (150 BC), used by Ptolemy, and mentioned by Philoponus in the first half of the sixth century. In the 9th century, at the great university in Harran, various works about the astrolabe were written, thanks to the Abbasid caliphs' emphasis on science and culture.
The oldest known book on the subject was written by Ali ibn Isa, who worked in Baghdad in 829–830 and in Damascus in 833. According to another account, the first person to discover the astrolabe was Abu al-Qasim Hibatullah, who was appointed by Seljuk Sultan Masud to the Baghdad Observatory and was known by the title Badi' al-Usturlabi ("Master of the Astrolabe"). Sultan Masud completed the Zij (astronomical tables) he prepared under this title in 1130.
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Александр П.
Better is the sextant used by sailors in ancient times. At a small scale it will be more recognizable. And such a mark will have many options for use as a metaphor.
DerdaKse
Александр П.A sextant was used even before astrolabes came into existence. The primary purpose of a sextant was to calculate the angle between the horizon and heavenly bodies like stars, the sun, the moon, etc. Astrolabes, on the other hand, were used to calculate distances between celestial bodies.
The device took its name, ultimately, from the Greek word astrolabos, or "star-taking." Astrolabes were used primarily to make astronomical measurements, typically of the altitudes of celestial bodies, but astute philosophers, astrologers and sailors devised hundreds of uses for the instrument. The astrolabe was, without a doubt, the slide rule of the Middle Ages.
Александр П.
DerdaKse especially if this instrument is older, it has more priority.
DerdaKse
Александр П.
Comparing the astrolabe a thousand year old marvel of science to a latecomer like the sextant is like looking at history through the wrong end of a telescope: narrow and blurry. It seems you judge knowledge by how shiny the metal is. Don’t worry, we won’t scold you for using a clock to tell time but as long as you claim the sun rises in the west, we’re not talking about science anymore, just your imagination.
Now take that opinion, throw it in the trash and destroy it.