WebGreek mathematicians later used algorithms in 240 BC in the sieve of Eratosthenes for finding prime numbers, and the Euclidean algorithm for finding the greatest common divisor of two numbers. Arabic mathematicians such as al-Kindi in the 9th century used cryptographic algorithms for code-breaking, based on frequency analysis.The word … WebEratosthenes assumed : • The earth is a sphere. Therefore a stick planted vertically in the ground will be perpendicular to the earth. • The sun is very far away. When its rays hit the Earth they are parallel. • Alexandria is directly north of Cyene—they lie on the same meridian. Eratosthenes knew:
Eratosthenes Reconsidered Answers in Genesis
WebAug 31, 2024 · Eratosthenes was very proud of his solution for Doubling the Cube . His motivation was that he wanted to produce catapults. Eratosthenes constructed a mechanical line drawing device to calculate the cube, called the mesolabio. He dedicated his solution to King Ptolemy, presenting a model in bronze with it a letter and an epigram. WebEratosthenes Earth's breadth and width Ctesibius constructed precise clocks. Chinese invent gunpowder, and in quick succession, also made fireworks, rockets, metals, and … bitlife rob train
Eratosthenes on the “measurement” of the earth - ScienceDirect
WebSep 14, 2024 · 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. WebEratosthenes’ approximation of the Earth’s circumference is a beautiful mathematical argument, regardless of the accuracy of its result. The modern length equivalent to the stade used by Eratosthenes may never be known, just as the reason for the addition of 2000 stades may never be discovered. WebApr 13, 2024 · 7 million locations, 57 languages, synchronized with atomic clock time. data binders for special education