10_-_General_Relativity

# 10_-_General_Relativity - As clocks move from A to B, the...

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Albert Einstein (1879 – 1955) E = mc 2

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General Relativity Special Relativity deals with inertial frames of reference (constant velocity). General Relativity deals with accelerated frames of reference. +
General Relativity 2 a a

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General Relativity 3 g
General Relativity 4 a v a v a v

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Bending of light by “gravity” a a a
Time and Gravity According to the general theory of relativity, gravitation causes time to slow down. If you move in the direction that the gravitational force acts, time will run slower. For example, clocks will run slower at the bottom floor of a skyscraper than at the top floor. Observer A is at the center of rotation. F cf = centrifugal force as observed on rotating disk. Observers A and C measure the same times . F cf A B C Observer B is at the outer rim of rotation.

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Unformatted text preview: As clocks move from A to B, the clocks will run slower. How do A &amp; C explain this? C says that since B is moving with respect to A, special relativity explains it. A says that since the centripetal force is greater at B, and this explains it. Observations made in an accelerated reference frame are indistinguishable from observations made in a Newtonian gravitational field. (Equivalence) Time and Gravity 2 According to the general theory of relativity, a clock will run slower at the bottom floor of a skyscraper than at the top floor. This is because as you move from the top floor to the bottom floor, the gravitational force increases. t T &gt; t B t T t B An office worker on the bottom floor will age more slowly than an office worker on the top floor....
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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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10_-_General_Relativity - As clocks move from A to B, the...

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