special relativity

# special relativity - Physics 113 Lecture 28 Special...

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Physics 102: Lecture 28, Slide 1 Special Relativity Physics 113: Lecture 28 Today’s Lecture will cover chapter 36 sections 1 – 7. Take a look at Special Relativity in 14 Easy (Hyper)lessons:

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Physics 102: Lecture 28, Slide 2 Inertial Reference Frame Frame in which Newton’s Laws Work Moving is OK but…. No Accelerating No Rotating Technically Earth is not inertial, but it’s close enough.
Physics 102: Lecture 28, Slide 3 Postulates of Relativity Laws of physics are the same in every inertial frame Perform experiment on train going east gives same results as on train going west. Speed of light in vacuum is c for everyone Measure c=3x10 8 m/s if you are on train going east or on train going west, even if light source isn’t on the train. Weird!

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Physics 102: Lecture 28, Slide 4 Relative Velocity (Ball) Throw a ball at 30 mph. How fast do I think it goes when I am: Standing still? - Running 15 mph towards? - Running 15 mph away?
Physics 102: Lecture 28, Slide 5 Relative Velocity (Light) Throw photon (3x10 8 m/s). How fast do I think it goes when I am: Standing still Running 1.5x10 8 m/s towards Running 1.5x10 8 m/s away Strange but True! It was verified in experiments with π - mesons decay 3x10 8 m/s 3x10 8 m/s 3x10 8 m/s

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Physics 102: Lecture 28, Slide 6 The Relativity of Simultaneity At Rest Moving A flash of light is emitted from the exact center of a box. Does the light reach all the sides at the same time?
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