Einstein s theory of special relativity
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Einstein’s Theory of Special Relativity. Einstein’s Theory of Special Relativity. Special – different frames of reference moving at high velocities relative to each other with no acceleration(s). Einstein’s Theory of Special Relativity.

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Einstein’s Theory of Special Relativity

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Einstein s theory of special relativity

Einstein’s Theory of Special Relativity


Einstein s theory of special relativity1

Einstein’s Theory of Special Relativity

  • Special – different frames of reference moving at high velocities relative to each other with no acceleration(s).


Einstein s theory of special relativity2

Einstein’s Theory of Special Relativity

  • Law #1 – the laws of physics are the same in all non-accelerating reference frames.

  • Law #2 - the speed of light ( c ) is the same in all non-accelerating reference frames.


Einstein s theory of special relativity3

Einstein’s Theory of Special Relativity

  • Time dilation

  • Length contraction

  • Loss of simultaneity


Einstein s theory of special relativity4

Einstein’s Theory of Special Relativity


Einstein s theory of special relativity5

Einstein’s Theory of Special Relativity

  • ( Β ) = v/c

  • ( γ ) = 1 / (1-(Β2)) ½


Time dilation t t

Time dilation t’ = γ t


Time dilation

Time dilation

  • Your spouse was born on the same day as you.

  • He/She leaves on a voyage to the star Tau Ceti

  • The distance to Tau Ceti is twelve light years.

  • The ship will travel at an average speed of .98c there and back again.

  • The ship will explore the star system for one (earth) year.

  • How much older will you be when your spouse returns?

  • How much older will your spouse be?

  • What will be your age difference?


Length contraction l l o

Length contractionL’ = Lo / γ

  • A runner goes past you with velocity of .85c holding a pole with a proper length of 20 meters.

  • What length do you measure the pole?

  • How long does the pole appear to the runner?


Length contraction l lo

Length contractionL’ = Lo / γ


Loss of simultaneity

Loss of simultaneity


Loss of simultaneity1

Loss of simultaneity


Mr tompkins

Mr. Tompkins


Mr tompkins1

Mr. Tompkins


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