WebOct 20, 2010 · Eratosthenes is named for the ancient Greek who first estimated the Earth's circumference around 240 BC. In the 1960's, Eratosthenes crater was identified by Gene Shoemaker and Robert … WebSep 4, 2011 · What was the contribution of Eratosthenes? Eratosthenes measured the circumference of the planet using shadows, and got really close to the exact answer. Who was Eratosthenes parents?
NASA - Eratosthenes Crater and the Lunar Timescale
WebSep 14, 2024 · 30. The famous measurements and calculations done by Eratosthenes around 300 BC are very widely known. He concluded correctly that the circumference of the Earth is about 252 000 times the length of an athletic stadium. But what Eratosthenes did would make no sense if the Sun were (for example) only 6000 miles from the Earth. http://scihi.org/eratosthenes/ roblox cursed tank simulator
Eratosthenes - Wikipedia
WebJan 24, 2010 · In this work, which for the first time described the geography of the entire inhabited world as it was then known, Eratosthenes of Kyrene (ca. 285-205 BC) invented the discipline of geography as we understand it. A polymath who served as librarian at Alexandria and tutor to the future King Ptolemy IV, Eratosthenes created the … WebNov 15, 2024 · Eratosthenes. Eratosthenes of Cyrene was a Greek mathematician who lived from about 275-195 B.C. Today he is best known for his contributions to geography, mathematics, and astronomy. Educated in Athens, Greece, and in Alexandria, Egypt, Eratosthenes was appointed director of the great Library at Alexandria in 236 B.C., … WebEratosthenes will always be remembered for the calculation of the Earth's circumference circa 240 BC, using trigonometry and knowledge of the angle of elevation of the Sun at noon in Alexandria and Syene (now Aswan, Egypt). The calculation is based on the assumption that the Earth is spherical and that the Sun is so far away that its rays can ... roblox cursor download for pc