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  • Eratosthenes - Wikipedia
    Eratosthenes of Cyrene ( ɛrəˈtɒsθəniːz ; Ancient Greek: Ἐρατοσθένης [eratostʰénɛːs]; c 276 BC – c 195 194 BC) was an Ancient Greek polymath and scholar He was known as a mathematician, geographer, poet, astronomer, and music theorist Eratosthenes later became the chief librarian at the Library of Alexandria
  • Eratosthenes | Biography, Discoveries, Sieve, Facts . . .
    Eratosthenes, Greek scientific writer, astronomer, and poet, who made the first measurement of the size of Earth for which any details are known He was also the director of the Library of Alexandria His only surviving work is Catasterisms, a book about constellations
  • Eratosthenes - World History Encyclopedia
    Eratosthenes (lived circa 276 to 195 BCE) was a Greek astronomer, geographer, mathematician, and poet best known for being the first to calculate the circumference of the earth and its axial tilt
  • Eratosthenes - Biography, Facts and Pictures - Famous Scientists
    Eratosthenes calculated the tilt of Earth’s axis relative to the plane of its equator with good accuracy • He produced the first map of the world featuring meridian lines and parallel lines These were similar to our modern lines of latitude and longitude
  • Eratosthenes - New World Encyclopedia
    Eratosthenes (Greek Ἐρατοσθένης; 276 B C E – 194 B C E ) was a Greek mathematician, geographer and astronomer His contemporaries nicknamed him "beta" (Greek for "number two") because he supposedly proved himself to be the second in the ancient Mediterranean world in many fields
  • Eratosthenes: Life and Major Accomplishments of the Ancient . . .
    Eratosthenes of Cyrene (c 276–c 195 BC) was an Ancient Greek polymath renowned for his contributions to mathematics, geography, poetry, astronomy, and music theory
  • Biography of Eratosthenes, Greek Geographer - ThoughtCo
    Eratosthenes of Cyrene (c 276 BCE–192 or 194 BCE) was an ancient Greek mathematician, poet, and astronomer who is known as the father of geography
  • Eratosthenes’ map, his method for measuring Earth’s size
    Explore Eratosthenes’ groundbreaking map, his method for measuring Earth’s size, and his role in the birth of scientific geography
  • Eratosthenes Facts Biography | Famous Mathematicians
    Eratosthenes was a mathematician and astronomer from Greek antiquity His work helped lay the foundation for many of the brilliant advanced concepts in math and science in the modern era He also served as a distinguished and innovative geographer
  • Sieve of Eratosthenes - Wikipedia
    Sieve of Eratosthenes: algorithm steps for primes below 121 (including optimization of starting from prime's square) In mathematics, the sieve of Eratosthenes is an ancient algorithm for finding all prime numbers up to any given limit It does so by iteratively marking as composite (i e , not prime) the multiples of each prime, starting with the first prime number, 2 The multiples of a given





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