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Washingtonn
en respuesta a: trickyK3C2L

If you spent 2 years testing with lasers and cameras without finding any curvature to the earth, you should have no qualms about using the method of Eratosthenes used over 2000 years ago to proving curvature of the earth using a couple of sticks and some guys pacing out the distance between 2 cities. The advantage of modern GPS and other precise measuring devices, should allow you to develop a test setup without the hassles of using a fishing line.

 

The experiment you linked did not account for the catenary of the fishing line - a major factor to be considered in generating an accurate measurement.