The Physics Of The Earth Essay

1194 Words Mar 3rd, 2016 5 Pages
leaving the shore to effectively illustrate this point, he writes, “...when a ship floats on over a tranquil sea, all the things outside seem to the voyagers to be moving in a movement which is the image of their own” (13). This optical illusion mirrors the geocentrism Copernicus was attempting to dispel.
Copernicus also noted that clouds and falling objects are not affected by the rotation of the Earth because they obey the same nature as earth.
9. “Whether Many Movements can be Attributed to The Earth, and Concerning the Center of the World.” Copernicus argues that the irregular patterns the planets follow make it apparent that the earth is not at the center of their rotation. Additionally, there is no reason why Earth is the only spherically shaped body in the world with gravity (and therefore the center of the world), and perhaps it is in fact the gravity that holds it in a spherical shape. Other heavenly bodies, such as the sun, moon, and wandering planets, are also spheres. Therefore, they may also need gravity to hold them together.
Most importantly, Copernicus states that if instead of the earth being in the center of the world, the sun were to assume the center, then the erratic movements of the wandering stars would be better explained as well as other heavenly phenomena.

Much like Ptolemy 's theorems, each of Copernicus’s eight points relies on what has previously been established to facilitate his arguments. An example being that in the ninth point, if it…

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