09_-_Special_Relativity

09_-_Special_Relativity - Albert Einstein (1879 – 1955) E...

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Unformatted text preview: Albert Einstein (1879 – 1955) E = mc 2 Special Relativity v r/T v T/E v l/T = c v T/E Simultaneity 2d A C t t C c B t B d Simultaneity (cont) A: Lightning strikes the front and back ends of a moving train, leaving char marks on both track and train. Each emitted flash spreads out in all directions. B: Observer riding in the middle of the train concludes that the two strokes are not imultaneous. Her argument: “(1) I am equidistant from the front and back char marks on the train. (2) Light has the standard speed in my frame, and equal speed in both directions. (3) The flash arrived from the front of the train first. (4) Therefore, the flash must have left the front of the train first; the front lightning bolt fell before the rear lightning bolt fell. I conclude that the lightning strokes were not simultaneous.” Einstein's Train Paradox illustrating the relativity of simultaneity. A B C C: Observer standing by the tracks halfway between the char marks on the tracks concludes that the two...
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This note was uploaded on 02/21/2009 for the course PHY 3425345 taught by Professor Dr.schrieber during the Spring '08 term at TCNJ.

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09_-_Special_Relativity - Albert Einstein (1879 – 1955) E...

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