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Ralph Edney,Craig Callender

Introducing Time

  • Mikie Jonesidézett4 évvel ezelőtt
    hanks to general relativity, the science of spacetime, we can now rigorously investigate questions about time travel, branching time, and so on.
  • Mikie Jonesidézett4 évvel ezelőtt
    That is, we may receive the answer before we even ask the question…
    In much the same way as we encountered when discussing time travel.
  • Mikie Jonesidézett4 évvel ezelőtt
    The event corresponding to what you will do after you read this sentence does not exist. The future is unsettled and ripe with possibility.
  • Mikie Jonesidézett4 évvel ezelőtt
    Time is independent of the contents of the universe.
  • Mikie Jonesidézett4 évvel ezelőtt
    1999, the National Institute of Standards and Technology in Boulder, Colorado (US) started using an atomic clock known as the NIST F-1 to define the second.
  • b5034040018idézett4 évvel ezelőtt
    sorry state, for I do not even know what I do not know!”.
  • 9i329382739213u81idézett6 évvel ezelőtt
    such as whether the past and future are real, whether time travel is possible, and the explanation of the direction of time
  • lolidézett8 évvel ezelőtt
    IS THE CORRECT CONCLUSION THAT TIME DOESN’T EXIST? OR IS IT ONLY THAT TIME AS WE MIGHT WANT TO UNDERSTAND IT DOESN’T EXIST?
  • lolidézett8 évvel ezelőtt
    Finally, there are those like the English physicist Julian Barbour (b. 1937) who think that this theory helps spell the end for time. He believes that the formalism is telling us something deep – namely, that time doesn’t exist
  • lolidézett8 évvel ezelőtt
    QUANTUM GRAVITY IS THE NAME GIVEN TO THE THEORY… …THAT WILL RECONCILE THIS CONFLICT ALTHOUGH NO SUCH THEORY CURRENTLY EXISTS, THERE ARE A FEW MORE OR LESS DEVELOPED RESEARCH PROGRAMMES
    Two major approaches are superstring theory and canonical quantum gravity. We cannot explain the details here, but we can sketch the problem known as the “problem of time” that plagues the standard, or “canonical”
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