Eratosthenes first learned about the position of the Sun in mid-summer by
A)consulting library information.
B)setting up a stick at Syene.
C)setting up a stick at Alexandria.
D)setting up sticks at both Syene and Alexandria.
E)none of the above

Question

Quizplus · Accepted Answer

Eratosthenes used information from the library at Alexandria, where he was the chief librarian, to learn about the Sun's position at noon on the summer solstice. He learned that in Syene (now Aswan, Egypt), the Sun would be directly overhead, casting no shadow.

Eratosthenes First Learned About the Position of the Sun in Mid-Summer