WebJul 29, 2024 · He could then use simple proportions to find the Earth’s circumference—7.2 degrees is 1/50 of 360 degrees, so 800 times 50 equals 40,000 kilometers. And just like that, an ancient Greek calculated precisely the circumference of our entire planet with just a stick and his brain over two thousand years ago. Eratosthenes accomplished many ... WebEratosthenes's work may have inspired the Greek astronomer and geographer Claudius Ptolemy to make his own determination of the circumference of the Earth in the second century a.d. Unfortunately, he rejected Eratosthenes's calculations and substituted errant values asserted by the geographer Posidonius (130-50 b.c.).

Did People Think The Earth Was Flat In The Middle Ages? - Ranker

WebView Greek-Model-Of-the-Universe.docx from MGT 001 at St. John's University. Greek Model of the Universe Anaximander Anaximander was the first to conceive a mechanical model of the world. ... with a stationary Sun and planets rotating in circular orbits around the Sun. Eratosthenes Eratosthenes concluded that the Earth has a circumference of ... WebIn the third century BCE, Eratosthenes, a Greek librarian in Alexandria, Egypt, determined the earth's circumference to be 40,250 to 45,900 kilometers (25,000 to 28,500 miles) by comparing the Sun's relative … callaway raceway in fulton missouri

Eratosthenes - Wikipedia

WebDec 28, 2024 · How an ancient Greek mathematician calculated the Earth's circumference. In the mid-20th century, we began launching satellites into space that would help us determine the exact circumference of ... WebIn this project, you will estimate the circumference of the earth, using a method developed about 2,200 years ago, by Eratosthenes, a Greek mathematician and the librarian of the great library at Alexandria, in Egypt. Eratosthenes knew from his reading that in Syene (a city almost due south of Alexandria) the sun was directly overhead at noon ... callaway range balls