Biography of Eratosthenes, Greek Mathematician and Geographer

The Sieve of Eratosthenes is an algorithm that finds all prime ... | Filo

Sieve of Eratosthenes (solutions, examples, videos)

Eratosthenes' Experiment: Fascinating Video Explains How He Accurately Calculated The Circumference Of The Earth With A Stick

SOLVED: Circumference of the Earth The Greek mathematician Eratosthenes (ca. 276-195 B.C.) measured the circumference of the earth from the following observations. He noticed that on a certain day the sun shone directly down a deep well in Syene (modern Aswan). At the same time in Alexandria, 500 miles north (on the same meridian), the rays of the sun shone at an angle of 7.2^∘ to the zenith. Use this information and the figure to find the radius and circumference of the earth.

Circumference of the Earth The Greek mathematician Eratosthenes (ca. 276-195 B.C.) measured the circumference of the earth from the following observations. He noticed that on a certain day the sun shone directly down a deep well in Syene (modern Aswan). At the same time in Alexandria, 500 miles north (on the same meridian), the rays of the sun shone at an angle of 7.2^∘ to the zenith. Use this information and the figure to find the radius and circumference of the earth. | Numerade