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Unformatted text preview: Einstein's relativity theory was presented as a principled, rather than a constructive, theory. A principled theory is one that begins with principles and then uses these principles to explain the phenomena; a constructive theory starts with the observat ions and culminates in theories that explain and reconcile those observations. Einstein's principled account began with the postulate that the laws of science should appear the same to all freely moving observers. In particular, all observers should mea sure the speed of light as the same regardless of how fast they are moving. Thus, there is no "universal time" that all clocks measure; rather, everyone has his or her own personal time. If one person is moving with respect to another, their clocks will not agree. To an observer moving in one frame of reference with uniform velocity relative to a second...
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This note was uploaded on 12/14/2011 for the course BIO 1320 taught by Professor Staff during the Fall '09 term at Texas State.
- Fall '09