37 - Special Relativity I

37 - Special Relativity I - Physics 212 9/30/2009 Special...

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Physics 212 Fall 2009 9/30/2009 Special Relativity
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Schedule Monday - Special Relativity I Wednesday - Special Relativity II (Course Evaluations) Friday - Last Class!
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Special Relativity Observation of events in coordinate systems DeFne observer, event Synchronization of clocks Simultaneity Time Dilation Length Contraction Velocity Addition Paradoxes Implications Newton’s Laws, Maxwell’s Equations General Relativity
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Relative Motion - 1D Review Follow the ball as it moves. Displacement vector is drawn in a coordinate system, but which “reference frame” do we use? You see the ball moving (A), I see it stationary (B). If a frame has zero or constant velocity, it is called an inertial reference frame . x PA = x PB + x BA v PA = v PB + v BA For inertial frames, v BA =constant, so a BA =0 a PA = a PB + a BA a PA = a PB Note that if acceleration is the same, the forces felt in each frame are the same. Newton’s Laws of Inertia are valid in all inertial frames of reference
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Special Relativity Measure events (things that happen) Where and when they happen, and by how much they are separated in space and time Einstein’s postulates - two simple statements that defy common sense 1. The laws of physics are the same for observers in all inertial frames.
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This note was uploaded on 10/03/2011 for the course PHYS 221 taught by Professor Tedeschi during the Fall '09 term at South Carolina.

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37 - Special Relativity I - Physics 212 9/30/2009 Special...

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