FromGreektoGalileo

FromGreektoGalileo - The Ancient Greek Philosophical...

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The Ancient Greek Philosophical Tradition The European Reception
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What Are Things Made Of? Hot Wet Dry Cold AIR WATER FIRE EARTH Aristotle: Elements and Their Qualities Levity Gravity
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The “Natural Places” of the Elements Gravity and Levity impel each element to move to its “natural” place in the cosmos Other forces often disturb natural motions Elements can be mixed Elements rarely exist in a pure state Elements subject to change But natural motions of elements still noticeable Eart h Wate r Air Fire
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Physical Implications of “Natural” Motion Earth is a sphere Earth is at the center of the universe Earth is stationary
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Aristotle’s “5th Element” “Quintessence” or “Ether” Unalterable and unmixable: Unchanging Natural motion is perfectly circular Natural place is beyond the realm of the 4 elements Planets and stars composed of ether Observed motions are generally circular Motions are repetitive and highly predictable
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This note was uploaded on 12/09/2009 for the course HIST 1026 at Virginia Tech.

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FromGreektoGalileo - The Ancient Greek Philosophical...

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