A Round Earth
First of all, the ancients didn't believe in a flat earth. The Greeks in fact knew of the spherical nature of the earth since 3rd century BC. This was based on scientific observations made by Eratosthenes. He observed the length of shadow cast in Alexandria (Egypt) and that no shadow was cast near Aswan (Egypt) on the summer solstice. He calculated the size of the earth to within one percent.
The concept of the flat earth belief was due to mis-interpretation of certain bible passages by 19th century scholars regarding the irrationality of medieval European church doctrine when compared with "rational" scientific doctrines. The funny part is that the people who popularized the term "flat earth" were in fact making the argument that the earth was round, and that "those guys who believed in this before us" were not acting rationally (aren't we so great now that we know better essentially). But in fact "those guys" were a myth that these authors had either deliberately embellished or ignorantly constructed - which is precisely what they were saying they were dispelling.
The below is from this article: http://creation.com/flat-earth-myth
" The above are the facts about Columbus. The much-parroted flat-earth myth about him comes not from history but from the tales of Washington Irving (1783–1859), The Life and Voyages of Christopher Columbus (1828). Irving was probably America’s first genuine best-selling writer, but he admitted that he was “apt to indulge in the imagination.” Flat-earth belief was certainly a figment of his imagination.
It was bad enough that this myth entered the public perception thanks to Irving’s wide readership. But it became worse when it acquired the veneer of scholarship, so it could be used as a club with which to bash Christianity. The main propagandists for this cause were the notorious 19th century anti-Christian bigots John William Draper (1811–1882) and Andrew Dickson White (1832–1918). Draper, a fine chemist and photographer—first president of the American Chemical Society—but a lousy historian, wrote History of the Conflict between Religion and Science (1874) as a poorly informed polemic against the Church. White was a disgruntled ex-Episcopalian and the founder of Cornell University as the first explicitly secular university in the United States. He also published the two-volume work History of the Warfare of Science with Theology in Christendom (1896).
Both authors relied heavily on the work of Cosmas, portraying his flat-earth teaching as typical rather than the almost forgotten, extreme minority view that it was. And they are the ones most responsible for the discredited ‘conflict thesis’ between Christianity and science, instead of the real history that the Christian world-view was responsible for science in the first place, while it was still-born in other places like ancient Greece and China.10
Colin Russell (1928– ), Emeritus Professor of History of Science and Technology at the Open University, writes:
“Draper takes such liberty with history, perpetuating legends as fact that he is rightly avoided today in serious historical study. The same is nearly as true of White, though his prominent apparatus of prolific footnotes may create a misleading impression of meticulous scholarship.”11
Both J.B. Russell and Gould argue that Draper and White had an agenda to discredit Christians who opposed the then-new theories of Darwin as ‘flat earthers’. Nothing much has changed!"
There are several simple observations which demonstrate that the earth is in fact round:
The Coriolis Effect:
Focault Pendulum rotation in opposite directions in Northern and Southern Hemispheres.
The toilet flush changes direction at the equator (that's an easy experiment the next time you cross the equator). If it were a solid spinning disk this would not be possible.
Often flat earther's challenge the very principle of our planet moving through space. To demonstrate the earth's motion through space I will refer below to different experiments demonstrating evidence of Ether drift. This evidence actually shows that there is a dynamic ether (medium of light) which the earth is moving through in space and disproves one of the fundamental foundations of general relativity that there is no etheric motion, only curvature. It also shows that the earth is moving through space.
Thank you for taking the time to write this. Absolutely fascinating!
"yea... those damn nano-diamonds" -Greg Carlwood