Who was the first to tell all that the world was round?

Answer 1

Anaximander (6th century B.C.) -- taught that the stars were attached to
a sphere with the earth floating freely in the center without support

Anaxagoras (c. 500 - 428 B.C.) -- according to Plutarch and other ancient
writers, taught correct explanation of Moon's phases

Aristotle (d. 323 B.C.) -- In his _Meteorology_ said, "The sphericity of the
Earth is proved by the evidence of our senses." Noted change in stars visible
as you move north to south; the manner in which the hull of a ship vanishes
below the horizon before the mast does; and the round shadow of the Earth on
the Moon during a lunar eclipse.

Aristarchus (c. 310 - 230 B.C.) -- In his _On the Size and Distances of the
Sun and Moon_ used geometric arguments to try to establish those values.
While the values were wrong due to limitations in making the necessary
measurements (Proposition 15 derived the ratio of the diameters of the
Sun and Earth as between 19:3 and 43:6; he derived a distance to the Sun
of 18-20 times the distance to the Moon), the ideas were sound.

Eratosthenes (276 - 196 B.C.) -- Using the difference in angle of the Sun
from the zenith at Alexandria and Syene, estimated the circumference of the
Earth as 46000 km (actual value is 40000 km).

Ptolemy (active A.D. 127 to 151) -- invented a conical map projection to
compensate for roundness of Earth: "When the Earth is delineated on a sphere,
it has a shape like its own..."; Propositions 19-21 in Book V of the
_Almagest_ contains a geometrical argument yielding a distance from Earth
to Sun of 1210 terrestrial radii (4,800,000 miles) -- while this is small by
a factor of 20, it gives a solar parallax of < 3 minutes, below the limit
of observational accuracy at the time.

Job from the Bible

Answer 2

This is actually a difficult question. The idea of a spherical earth was a concept put forth in ancient Greece (Wikapedia credit's Pythagoras) and it was certainly a topic of discussion for centuries in Europe.

While Columbus made his voyage based on the notion, the notion that he believed he reached Asia and that he was proven wrong by Amerigo Vespucci is still taught in grammar schools, although some have expressed doubt that Columbus thought he reached Asia, he just said it so others would be willing to follow in his footsteps.

Of course the Vikings reached what we now know as New Foundland hundreds of years before Columbus made his journey, but that is not necessarily relevant to the round/flat question.

Answer 3

Galileo

Answer 4

JOB in 1473 BCE (BC ) you can find that in Job 26: 10 Isiah also mentions it in Isa 40:22 and that was in 732 BCE so Job was first hope that answers your question Gorbalizer

Answer 5

the earth isn't exactly round...it's a little of an oval shape..it's not a perfect sphere....the first to say that the world was round ws Christopher Colombus.

Answer 6

your bible. Isaiah 40:22 and Job 26:7. check it out.

Answer 7

Wasn't it Christopher Columbus

Answer 8

christopher columbus

on the nina pinta and santa maria

Answer 9

dont know anout whowas the first to tell but the first to proveit was chistopher columbas

Answer 10

christopher columbus