WebApr 5, 2013 · An illustration showing Greek scientist Eratosthenes ' method for calculating the circumference of the Earth. By measuring the angle of a shadow in one location ( Alexandria) and comparing at the same time … WebSep 4, 2024 · How did Greek librarian Eratosthenes accurately measure the circumference of Earth using a stick, a shadow, and a walk? ... They estimated the distance between …
History of geodesy - Wikipedia
WebEratosthenes ( c. 276 – c. 194/195 BC ), a Greek mathematician who calculated the circumference of the Earth and also the distance from the Earth to the Sun. Hipparchus ( c. 190 – c. 120 BC ), a Greek … WebJan 2, 2024 · It turns out that the actual circumference of the Earth is 24,901 miles. Not too bad for an old fella in 200 BC! ... If you want to go farther and calculate the circumference of the Earth from your two sets of measurements, follow the next set of instructions. Procedure: Measuring the Circumference! ... tebeau
Eratosthenes: Measuring the Impossible OpenMind
WebOct 8, 2012 · The question was, how big is the sphere? In 200 BCE, after all, Eratosthenes calculated the circumference of the earth to within one percent of its actual girth. He figured that one degree of latitude was equal to 59.5 nautical miles. WebEratosthenes’ Circumference of the Earth Eratosthenes was a brilliant mathematician, scholar and poet that was able to calculate the circumference of the Earth when he lived in late 200s B.C. Eratosthenes is highly praised for this great accomplishment because he did not have any modern tools that we have today and was able to calculate the Earth’s … WebEratosthenes reasoned that the ratio of the angular difference in the shadows to the number of degrees in a circle (360°) must equal the ratio of the distance to the circumference of the Earth. The resulting estimate, about 25,000 miles (40,234 km), is astonishingly accurate. In making his calculations Eratosthenes measured distance in stadia ... tebeaux and dragga’s