This incredibly accurate science experiment was centuries ahead of its time. | Business Insider
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This incredibly accurate science experiment was centuries ahead of its time. | Business Insider
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SOLVED:How did Eratosthenes calculate the Earth's circumference? (A)
SOLVED:How did Eratosthenes calculate the Earth's circumference? (A)
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How an Ancient Greek Calculated the Earth's Circumference - GreekReporter.com
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Learn All About the Greek Mathematician Eratosthenes
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This measurement is more than 2,200 years old, and its accuracy is remarkable
This measurement is more than 2,200 years old, and its accuracy is remarkable
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ABC Newsbusiness reporter Gareth Hutchens
Eratosthenes measured Earth’s circumference mathematically using two surface points to make the calculation. He noted that the Sun’s rays fell vertically at noon in Syene (now Aswān), Egypt, at the summer solstice. In Alexandria, also in Egypt, at the same date and time, sunlight fell at an angle of about 7.2° from the vertical. | Encyclopaedia Britannica
0:04
Eratosthenes measured Earth’s circumference mathematically using two surface points to make the calculation. He noted that the Sun’s rays fell vertically at noon in Syene (now Aswān), Egypt, at the summer solstice. In Alexandria, also in Egypt, at the same date and time, sunlight fell at an angle of about 7.2° from the vertical. | Encyclopaedia Britannica
575 viewsJul 19, 2024
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Eratosthenes
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worldhistory.org
How Ancient Greek mathematician Eratosthenes calculated the Earth’s circumference (VIDEO) - ProtoThema English
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