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What Hath Befallen Gravity?

What Hath Befallen Gravity?. Topic 4. Newton’s rules for the study of natural philosophy. Simplicity Generality Experimental verification Theories are tentative. Three Approaches to Forces. Action at a distance -no mechanism Field Description -space changed by body

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What Hath Befallen Gravity?

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  1. What Hath Befallen Gravity? Topic 4

  2. Newton’s rules for the study of natural philosophy • Simplicity • Generality • Experimental verification • Theories are tentative

  3. Three Approaches to Forces • Action at a distance -no mechanism • Field Description -space changed by body • Particle Exchange -emitted or removed

  4. Flat Space vs. Spherical Space

  5. Effect of Acceleration

  6. Principle of Equivalence • Downward pull of gravity can be duplicated by an upward acceleration

  7. Curvature of Space

  8. Deflection of Light

  9. Orbital Precession

  10. Gravitational Red Shift

  11. Black Hole

  12. Particle Exchange

  13. Expanding Universe

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