Category: animation

  • Portfolio: Eratosthenes Measured Earth (Animation)

    Portfolio: Eratosthenes Measured Earth (Animation)

    The Greek astronomer, mathematician and geographer Eratosthenes of Cyrene (276-194 BC) was the first person to accurately measure the circumference of Earth. This animation illustrates his method. Randy Russell developed this animation (using the now-defunct Flash animation software) for a citizen science project as part of his work on the Windows to the Universe web…