He postulated the circumference of the earth.
The sieve of Eratosthenes was discovered in 223 BC.
No.
Eratosthenes is known for several significant contributions, and three notable things named after him include the "Eratosthenes sieve," an ancient algorithm for finding prime numbers, the "Eratosthenes measure," which refers to his method of calculating the Earth's circumference, and the "Eratosthenes crater," a large impact crater on the Moon named in his honor. His work laid foundational principles in mathematics, geography, and astronomy.
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He did not do so. Earth was well-known to be a globe for at least two hundred years before Eratosthenes' time. What Eratosthenes did was to measure the earth's circumference for the first time. He did that at some time between 236 BC and 195 BC.
Eratosthenes
Eratosthenes lived between 276 and 194 B.C. He didn't discover prime numbers; he devised a simple way to determine what numbers are prime in a given range.
Eratosthenes was from ancient greek
Eratosthenes, It says it is Eratosthenes.
Yes, Eratosthenes estimated the Earth's diameter using the angle of the sun's rays at two different locations on the same day. By measuring the difference in the angles, he was able to calculate the Earth's circumference and thus its diameter.
Yes, Eratosthenes had two sisters.
Eratosthenes, a greek philosopher, did, hence the name.
The sieve of Eratosthenes was discovered in 223 BC.
Eratosthenes' friend was Archimedes, he also works in Alexandria, Egypt.
Yes and his mother and father were part of the family.
The book Eratosthenes is by Duane W. Roller. This book is written about Geography.
Eratosthenes determined the size of the Earth by measuring the angle of the shadow cast by a vertical stick in two different locations on the same day. By comparing the angles at the two locations and knowing the distance between them, he was able to calculate the Earth's circumference.