Scubarob.love presents: Eratosthenes

Eratosthenes Eratosthenes (l. c. 276-195 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. He is also recognized for his mathematical innovation, the Sieve of Eratosthenes, which identified prime numbers, and his position as head of the Library …

See https://www.worldhistory.org/Eratosthenes/ for more