When and where did ptolemy make his astronomical observations?

Ptolemy is one of the best known astronomers, geographers, mathematicians, from the antique period. He lived in what is now Egypt, in his time it was the Roman Province of Egypt, in the city of Alexandria, the famous city of knowledge.

Not much is known about Ptolemy's life except from his scientific writings. In the year of 150 AD, Ptolemy finished his book where he had written a lot about his astronomical observations and conclusions. According to the book, he summed up observations made over a period of around 25 years, thus we can say that he was making his observations from 125 AD to 150 AD.

What made his work very important and marking is his geocentric model. Despite it not being accurate, as it had multiple mistakes, it was still the basis for further scientific observations and investigations for the centuries to come. His observations were made on the territory of Egypt, the majority of them from Alexandria itself.

well this is going to be a long answer lol ok so the visigoths were a branch of the goths who frequently raided rome, uh the hunas attacked the guptas a lot and weakened them, uuhm of course the romans used math and science in there every day lives i mean they had a whole empire to run, and rome was split into east and west by a general named diocletian. hope this you! : )

regarding the law, the 15th amendment was specifically designed thinking in the rights of black free men.

even though ratified on february 3, 1870, the promise of the 15th amendment would not be fully applied for a long time.poll taxes and literacy tests would allow southern states disenfranchise african americans. only in 1965 the voting rights for african americans would be actually able to vote in the south.

in 1965, president johnson signed the voting rights act, which aimed to overcome legal barriers that prevented african americans from voting as it was guaranteed by the 15th amendment to the u.s. constitution.