15 Sci Rev Slides

15 Sci Rev Slides - 1 “And yet it does move!” “And...

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Unformatted text preview: 4/17/2009 1 “And yet it does move!”: “And yet it does move!”: The Scientific Revolution The Scientific Revolution A 1620 copper engraving depicting Pillars of Hercules The Empyrean Heaven, part of the Ptolemaic System Copernican Revolution Nicolaus Copernicus & his heliocentric conception of the universe 4/17/2009 2 Johannes Kepler (1571 ‐ 1630), Tycho Brahe’s system, and the elliptical movement of the planets around the sun that Kepler discovered Kepler’s Laws of Planetary Motion: 1. Planetary orbits elliptical, not circular 2. Planets move faster when nearer the sun 3 L b i t l 3. Larger orbits = slower revolutions So What? ¡ Disproved geocentrism ¡ Disproved circular orbits ¡ Disproved uniform motion Galileo Galilei’s study of the moon’s topography Galileo’s descriptive records of the moon and heavens sparked more interest—and raised more eyebrows— than Copernicus’ and Kepler’s mathematics 4/17/2009 3 In his Dialogue between the Ptolemaic and Copernican supporters, the Copernicans won out—but Galileo’s victory cost him his freedom to move about and publish, if not to work privately: if not to work privately: Galileo and Planetary Motion: • Uniform force = faster motion • Motion is as natural as rest (Sir) Isaac Newton and his Principia, described as “the greatest mental effort ever made by one man.” Newton’s calculus created a new cosmology: Book I: Newton’s Laws of Motion 1. Every object at rest or moving straight unless bumped 2 The bigger the force the greater the...
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15 Sci Rev Slides - 1 “And yet it does move!” “And...

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