It was intriguing farmers since quite many years. Sometimes at mid day they would see the bottom of their wells along its walls clearly in sunlight. The sun rays touching the bottom. The other days it was not so. The sun cast a long shadow. The bottom of their wells rarely seen. But back home it never did. Farmers never saw the bottom of their wells. The sun always casting a shadow. A wise man was called. He calculated the position of the sun at noon time. Then found it wasnt overhead at all. But at 7 degrees south. One fiftieth of a circle. The place where sun was overhead at noon was 50,00 stades away. He calculated the circumference of the earth. 50 multiply 5000. This happened 2 thousand and 200 years ago. It was a well that triggered a process which helped calculate the circumference of the earth. It was Eratosthenes the astronomer who did it. He stayed at Alexandria. The year was 200 bc.
Posted on: Sat, 06 Dec 2014 02:26:49 +0000
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