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To: Lonesome in Massachussets

So, if the speed limit for ‘things’ in our spacetime is the speed of light, if a ‘thing’ is moving faster than the speed limit that ‘thing’ is no longer existing in our spacetime ... if not a timing bias, perhaps a bias toward what is Time? To this point in human History, there have been no observations of anything that has not already occurred, so would this ‘phenomenon’ being reproted be approaching observation of a current —that’s a present, not past— event? BWahahhahahaha, science is so much fun.


27 posted on 09/24/2011 8:42:20 AM PDT by MHGinTN (Some, believing they can't be deceived, it's nigh impossible to convince them when they're deceived.)
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To: MHGinTN

How do you detect something moving faster than light? I’m not sceptical, just curious.


28 posted on 09/24/2011 8:44:23 AM PDT by AD from SpringBay (We deserve the government we allow.)
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To: MHGinTN
Ernst Mach observed that Newton's law of motion reduce, trivially, to a definition of time. Which does not mean they are useless, we can predict simultaneous events, like a rocket ship and an asteriod meeting in space.

The idea of the defintion of time is actually quite profound, and not at all easily answered. In physics, time arises from the observation of sequential events, the interval between them being "time". Up until 1967, time was defined by gravity, as reckoned from the observation of astronomical events. The timescale arising from these observations was called "Ephemeris Time" or ET. It was the most uniform and accurate timescale known. In 1967, time, or more properly, the second, was redefined in terms of a quantum electromagnetic phenomenon, specific the band gap energy of a certain transition of the Cesium atom, giving rise to a timescale now called TAI. (International Atomic Time or Temps Atomique Internationale)

The remarkable thing is, that within the accuracy of our ability to measure, there is absolutely no inconsistency between ET (now replaced by TD or TDB, for Dynamical Time or Barycentric Dynamical Time) and TAI. In other words, either the cesium atom "knows" what the planets are doing, or the planets know what the cesium atom is doing, or events associated with both are progressing in response to a thing called "time".

33 posted on 09/24/2011 10:12:52 AM PDT by Lonesome in Massachussets (Ceterum autem censeo, Obama delenda est.)
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