Curvature: computations with illustrative formulas

Curvature, yes. Earth’s curvature is a topic about which a number of calculations are available: you just need surfing the net and search for everything you want. A great number of images, posts, and videos show full evidence there is no curvature. Notwithstanding, I want to discuss the topic all the same. In fact, it touches our senses in a very sensible way. I’m going to deal first with computations and then with some example.[…]

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Eratosthenes’ experiment proves the earth is flat

Eratosthenes was a Greek mathematician born in Cyrene in 276 B.C. He was not the first one describing the Earth as a sphere. Plato and Aristotle had done before. Plato wrote that the Creator “made the world in the form of a globe, round as for a lathe, having its extremes in every direction equidistant from the centre, the most perfect and the most like itself of all figures,” “one of those balls which have[…]

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