Who, long before Columbus, claimed the world was round,?

Answer 1

Although it is generally acknowledged that some non-Western peoples, notably the Chinese, were aware that the Earth was a sphere, the first person credited with confirming this was the Greek mathematician Eratosthenes, in the 3rd Century BC, as has already been noted. There are assertions that Pythagoras made such a claim as far back as the 6th Century BC, although there is no proof of this, and in fact it is unlikely, since most followers of Pythagoras held to the flat-Earth notion.

I am mainly responding here to correct the common misconception that seems to be incorporated into your question. Columbus did not make his voyage to prove that the world was round and was not making such a claim. Any person in late 15th Century Europe with even a pretense of education knew that the world was round.

The claim that Columbus was making was that the world was smaller than some had reckoned, and therefore that a quicker route to the Orient was to sail due west from Europe across what was assumed to be a single ocean. Whether Columbus actually believed the world to be smaller than it is, or whether he just said that to get someone to sponsor his voyage, is a matter of debate, however.

Answer 2

That the Earth is around became universally often utilized in western society on the time of Columbus. It were found out in historic Greek circumstances (it incredibly isn't any longer complicated to verify), in line with danger as early because of the fact the sixth century BC and actually via the third century BC. This actuality became not at all misplaced or forgotten even for the duration of the middle a protracted time. the tale that individuals in the middle a protracted time thought the Earth became flat became made up in the nineteenth century.

Answer 3

There is evidence that the ancient Chinese knew the Earth was round and that it revolved around the sun.

The Ancient Greeks certainly knew about it. The idea of a round Earth was known during the time of Pythagoras (6th century BCE) and Aristotle (4th century BCE) certainly knew the Earth was round by observing the curved shadow at lunar eclipses.

The first person to measure the circumference of the Earth was Eratosthenes of Cyrene (276-195BCE) who came up with a remarkably accurate figure.

Answer 4

This was espoused by Pythagoras, apparently on aesthetic grounds, as he also held all other celestial bodies spherical. Aristotle provided observational evidence for the spherical Earth, noting that travelers going south see southern constellations rise higher above the horizon. This is only possible if their horizon is at an angle to northerners' horizon. Thus the Earth's surface cannot be flat

Answer 5

A man by the name of Ptolomey calculated the size of the world long before Colombus set sail. Reportedly, 1492 was the year the globe was invented. Chris was just looking for a shortcut to India.

Answer 6

YEAH! A GREEK, OBVIOUSLY. EVEN HE CALCULATES DISTANCE FROM EARTH TO THE MOON.
ANAXAGORAS

Answer 7

HIPPOCRATES!!