According to this proof, the stars rise and set sooner for people in the East than in the West. His second proof used the rise and setting of stars. In his second proof, Aristotle again used Astronomy to proof his belief. He further explained that if the Earth was any other shape than round, the shadow it casts wouldn't be spherical. His proof stated that the shadow of the Earth during a lunar eclipse was always curved, a segment of a circle, therefore, the Earth must be round. The article further explains Aristotles' proofs to his belief that the Earth was round.Īristotle used Astronomy in his first proof to show that the Earth was round. Therefore, he used science, mathematics, and astronomy to proof his belief. Aristotle firmly believed that the Earth was round and therefore set out to proof his belief. To further emphasize his point, Lightman uses Aristotle as a prime example of someone who is not just accepting of the facts. Lightman uses himself as an example, that due to his profession as an astrophysicist, he has been taught not to take things for granted, yet, that he in fact just realized that he did not know for certain whether the earth was flat or round. The article by Lightman is about finally realizing that we have been accepting of many things without question. The article by Alan Lightman is about asking questions and finding answers rather than simply accepting was it already known as fact.
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