Tuesday, 4 April 2017

curvature - What is the simplest way to prove the Earth is round?


Assume you've come in contact with a tribe of people cut off from the rest of the world, or you've gone back in time several thousand years, or (more likely) you've got a numbskull cousin.


How would you prove that the Earth is, in fact, round?



Answer



The shadow of the Earth on the Moon during an eclipse and the way masts of ships are still visible when the hulls are out of sight are the classical reasons.


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