HPS100H1 Chapter Notes - Chapter 9-12: Jigsaw Puzzle, Retrograde And Prograde Motion, Almagest
15 Apr 2016
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Chapter 9 - the structure of the universe on the aristotelian worldview. The aristotelian system of belief was the most common. Periphery of the universe: the sphere of fixed stars. The sphere completes one revolution every 24 hours, carrying the stars with it. Teleology and essentialism are the two sides of the same coin. Teleological explanation: any explanation given in terms of a goal, purpose, function. Mechanistic explanation: any explanation that does not use goals, purposes, functions. Essential natures are why objects behave as they do. The essential natures are why objects behave as they do. Chapter 10 - the prefa(cid:272)e to ptole(cid:373)y " s al(cid:373)agest : the earth as. Spherical, stationary, and at the center of the universe. The sun, moon, and stars rise and set at different times. Differences in time is proportional to the distances between observers. Would observe the sun, moon, and stars rising at the same time if the earth is flat.
