Labels:text | screenshot OCR: So he defined three different kinds of gravity. One was "essential gravity": The earth is the geometric center of the cosmos. Another was "natural gravity": If a sphere has elements of different weights, the center of gravity is located in the place that keeps the sphere in balance. And finally, there essential was "accidental gravity": The actual center of the world is always shifting because the mingled elements of earth and water are always shifting. accidental LEAD WOOD natural
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