Who is credited with the earliest measurement of the Earth’s circumference around 240 BC?
Answer
Eratosthenes
The ancient Greek mathematician and geographer Eratosthenes is credited with this measurement, relying on observation and geometry rather than direct surveying across the entire globe.
#Videos
How to Measure Earth? - YouTube
Related Questions
Who is credited with the earliest measurement of the Earth’s circumference around 240 BC?What critical assumption formed the basis of Eratosthenes' method for calculating circumference?In which location did Eratosthenes observe that the sun shone directly down a deep well at noon on the summer solstice?What angle did Eratosthenes measure in Alexandria corresponding to the separation between the two cities?What professional role was responsible for measuring the terrestrial distance between Syene and Alexandria?If 7.2 degrees of arc equaled 5,000 stadia, what was Eratosthenes' final circumference estimate in stadia?What term describes the Earth's actual shape, which bulges at the equator and is flattened at the poles?Which modern technique utilizes signals from distant cosmic radio sources observed simultaneously by widely separated radio telescopes?What is the primary function of 'datums' in modern high-precision work like geodesy?What visual evidence of curvature can be seen locally when viewing a very distant object like a lighthouse?How does the period of a pendulum provide data related to the Earth's size and shape?