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That the earth was round, and calculated it's circumference to be 24,675 miles, relatively close to the actual figure.
To add to that, the actual figure is 24,901.55 miles (40,075.16 kilometers)
at the equator, but shorter from pole to pole, 24,859.82 miles (40,008 km).
This is because the earth is not exactly round, but has the shape of
oblate spheroid, or ellipsoid, or more properly, geoid (earth-like).
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The Greek geographer mathematician astronomer and poet who calculated the circumference of Earth was?
Eratosthenes
Describe how eratosthenes measure the size of Earth?
Eratosthenes measured the size of Earth by using the Sun's angles, as well as a bit of geometry.
What is the study of celestial bodies called?
Astronomy, the person who studies them is an Astronomer
Did Eratosthenes discover that the world is round?
yes
How did eratosthenes determine the size of the earth?
The used an orange
What did astronomer eratosthenes dertermined?
to astronomically declare that the nuclear power-plants are failing.
The Greek geographer mathematician astronomer and poet who calculated the circumference of Earth was?
Eratosthenes
Did Eratosthenes have any offspring?
si eratosthenes ay isang Greek astronomer geographer, at isang mathematician. Siya ay nanggaling sa mars
In 250 BC who determined the size of the earth?
Eratosthenes
How did Eratosthenes determined the size of the Earth?
The used an orange
When did Eratosthenes live and die?
Eratosthenes was born in Cyrene, Shahhat, Libya in 276 BC and died in Alexandria, Egypt in 194 BC. He was an astronomer, mathematician, and geographer, who eventually became the chief librarian at the Library of Alexandria.
What is the formula that Eratosthenes discovered?
Eratosthenes of Cyrene was a Greek mathematician, elegiac poet, athlete, geographer, and astronomer. He was the first person to calculate the circumference of the earth by using a measuring system using stades, or the length of stadiums during that time period, and the tilt of the earth's axis.
Who is ptolemy XIII?
ptolemy is a ancient astronomer who determined the law of gravitational motion
How long did Eratosthenes live?
Eratosthenes was a Greek astronomer and mathematician, he is considered the inventor of geography. In fact, he is credited as the first one that calculated the earth's circumference. He was born in the year 276 BC and died in the year 195 or 194 BC, thus, he lived 80 or 81 years.
What astronomer determined that a pendulum could track the rotation of the earth?
That was Léon Foucault, in 1851.
Where was Eratosthenes from?
Eratosthenes was from ancient greek
What are facts on Eratosthenes?
Eratosthenes was a Greek mathematician and astronomer, named chief of the Library of Alexandria. He is recognized as the first person that calculated the circumference of Earth, he did it by his own rudimentary means and the results were quite accurate.
