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Eratosthenes learned about the position of the sun by observing the angle of a shadow cast by a vertical stick in Alexandria at the same time a stick in Syene had no shadow. By measuring this angle and knowing the distance between the two cities, he was able to calculate the Earth's circumference.
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How did eratosthenes learn about the position of the sun on June 22?
Eratosthenes learned about the position of the sun on June 22 by noticing that in the city of Alexandria, a vertical stick didn't cast a shadow on that date. At the same time in Syene, a city to the south, a vertical stick did cast a shadow. By measuring the angle of the shadow at both locations, he was able to calculate the Earth's circumference.
Does Eratosthenes determine Earth's diameter?
Yes, Eratosthenes estimated the Earth's diameter using the angle of the sun's rays at two different locations on the same day. By measuring the difference in the angles, he was able to calculate the Earth's circumference and thus its diameter.
Did Eratosthenes have sisters?
Yes, Eratosthenes had two sisters.
What beliefs about Earth and the heavens were proved by the discoveries of Aristarchus and Erastosthenes?
Aristarchus proposed the heliocentric model, suggesting that the Earth orbits the Sun, which challenged the prevailing geocentric view that the Earth was the center of the universe. Eratosthenes, through his measurements of shadows and the angle of the Sun's rays, calculated the Earth's circumference, providing evidence of its spherical shape. Together, their discoveries promoted a more accurate understanding of the Earth’s position in relation to the heavens and demonstrated that the Earth is a spherical body moving around the Sun.
What is Venus position relative to the earth?
Venus is the second-closest planet to the sun. The distance from the sun to Venus is 0.7233 astronomical units which is equal to 67.23 million miles.
How did eratosthenes learn about the position of the sun on June 22?
Eratosthenes learned about the position of the sun on June 22 by noticing that in the city of Alexandria, a vertical stick didn't cast a shadow on that date. At the same time in Syene, a city to the south, a vertical stick did cast a shadow. By measuring the angle of the shadow at both locations, he was able to calculate the Earth's circumference.
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.
Who reasoned that the sun must be curved?
Eratosthenes (275-c. 195 B.C)
Where was Eratosthenes from?
Eratosthenes was from ancient greek
Who is the founder of prime numbers?
Eratosthenes, It says it is Eratosthenes.
Did Eratosthenes have sisters?
Yes, Eratosthenes had two sisters.
Does Eratosthenes determine Earth's diameter?
Yes, Eratosthenes estimated the Earth's diameter using the angle of the sun's rays at two different locations on the same day. By measuring the difference in the angles, he was able to calculate the Earth's circumference and thus its diameter.
Who created the sieve of eratosthenes?
Eratosthenes, a greek philosopher, did, hence the name.
When did Eratosthenes discover the sieve?
The sieve of Eratosthenes was discovered in 223 BC.
What are the basic arm position in ballet?
The first one you learn is bora bor then first position then second position then fifth position then third then you will learn fourth. As you progress you will learn arabesque positions.
Who were eratosthenes friends?
Eratosthenes' friend was Archimedes, he also works in Alexandria, Egypt.
Did Eratosthenes have a family?
Yes and his mother and father were part of the family.
