Who Calculate The Circumference Of The Earth
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READ: Eratosthenes of Cyrene (article) | Khan Academy
- https://www.khanacademy.org/humanities/big-history-project/solar-system-and-earth/knowing-solar-system-earth/a/eratosthenes-of-cyrene
- A century after Eratosthenes, the Greek astronomer Posidonius of Rhodes (c. 135–51 BCE) calculated the Earth’s circumference. Posidonius used the star Canopus as frame of reference: when the star is visible at the horizon in Rhodes, it is 7.5 degrees above the …
5.4: Measuring the Earth with Eratosthenes - Physics LibreTexts
- https://phys.libretexts.org/Bookshelves/Astronomy__Cosmology/Astronomy_for_Educators_(Barth)/05%3A_Measuring_and_Mapping_the_Sky/5.04%3A_Measuring_the_Earth_with_Eratosthenes
- The Earth’s circumference was first accurately measured more than 2,200 years ago by a Greek astronomer named Eratosthenes. Eratosthenes method was very simple; he …
Who Was The First Person To Accurately Measure The …
- https://www.worldatlas.com/articles/who-was-the-first-person-to-accurately-measure-the-circumference-of-the-earth.html
- Eratosthenes is considered the inventor geography, particularly because he developed the system of latitudinal and …
Eratosthenes - World History Encyclopedia
- https://www.worldhistory.org/Eratosthenes/
- Eratosthenes (l. c. 276-195 BCE) was a Greek astronomer, geographer, mathematician, and poet best known for being the first to calculate the circumference …
How to Calculate the Circumference of Earth (Step by Step)
- https://tutors.com/lesson/circumference-of-earth
- The earth, as we said, is an oblate spheroid, so geodesists (scientists who measure the earth and its position in space) have measured and calculated the average …
Calculating the Circumference of the Earth | Science Project
- https://www.sciencebuddies.org/science-fair-projects/project-ideas/Astro_p018/astronomy/calculating-the-circumference-of-the-earth
- In this project, you will estimate the circumference of the earth, using a method developed about 2,200 years ago, by Eratosthenes, a Greek mathematician and the librarian of the great library at Alexandria, in Egypt.
Circumference of the Earth - Cuemath
- https://www.cuemath.com/geometry/circumference-of-the-earth/
- Circumference = 2 πR or π D; where R is the radius of the sphere and D is the diameter of the sphere. Since Earth is not a perfect sphere but an oblate spheroid, i.e., it has an equatorial diameter greater than the polar …
How Ancient Scientists Calculated The Circumference Of The …
- https://www.ancientpages.com/2017/05/01/ancient-scientists-calculated-circumference-earth/
- Eratosthenes Of Cyrene Calculated The Circumference Of The Earth Using A Gnomon And Counting How Long A Camel Walked In A Day Born in Cyrene which is now in Libya in North Africa, Eratosthenes …
Circumference Calculator
- https://www.omnicalculator.com/math/circumference
- The first person to calculate the Earth's circumference was Eratosthenes, a Greek mathematician, in 240 B.C. He discovered that objects in a city on the Northern Tropic do not throw a shadow at noon …
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