Science teachers in a summer physics class at Southeast Missouri State University relied on shadows Thursday to calculate the Earth's circumference during the summer solstice, the longest day of the ...
The U.S. Army has succeeded in shrinking the circumference of the earth by about half a mile. To make the new estimate, according to a paper submitted to the American Geophysical Union by Bernard ...
CC0 Usage Conditions ApplyClick for more information. About two thousand years ago, a Greek scholar named Eratosthenes used some sticks, shadows and math to calculate the circumference of the Earth.
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