Vuldacon wrote:
Not sure how we all got off discussing Time but my basic view is that it is important to know what "time" is. Sure it is man made and a method of recording past, present and future events as well as establishing a world time system from our solar cycle.
Aarrgh, the physicist in me cannot stand it any more...

Time is one of the four dimensions in the Minkowski space, together with length, width and heigth. Time is a part of the Universe, it shaped the Universe by allowing a sequence of events to take place from the primeval singularity (Big Bang) all the way what is now. Time is universal it's motion forward, but your personal experience of it can be altered by moving at relativistic speeds (as Ken nicely illustrated).
Humans did not invent time, only ways to register time using the means at their disposal many centuries ago. Using days, month and years seemed logical since they are so recognizable. However if the entire time keeping system would have to be reinvented they might end up with a decimal system: 100s in 1 minute, 100 minutes in 1 hour etc (this might require redifining the length of a second though...

) as they did in the French Revolution. It was only abandonned a couple of years later because noone really used it...
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For the sake of discussion, and way of seeing "time", I believe time is not just events but the effect on them and all things in our world that is under the influence and "rules" of our solar system and universe.
The sequence of events is a result of the linear passage of time, it is not a definition of time.
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IF one can either escape or move further away from the events and effects that these influences have, one can change "time" because the events and effects will have either no or a lesser ability to cause change from this total or lack in influence governed by the "Rules" as we are affected on Earth.
Time is not influenced by the motion of celestrial bodies (except perhaps black holes, neutron star or any other gravitation near-singularity, but that is an entirely different story). Time in the Universe is moving at a constant rate: one second on Alpha Centauri is exactly equal to one second here, but it is the process of getting there that will cause temporal differences. If you move at 99% of the speed of light time slows down for you. This means the trip takes shorter for you then it would seem for any observer on either Earth or AC. This can be easily calculated using the Lorentz transform.
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Traveling the speed of light or towards it is an explaination that proves this point..it "breaks away" from the effects that are influenced by our solar system, universe and rules that are applied here on earth.
The speed of light is absolute in any frame of reference, both for you in your spaceship, or the two observers.This is the only absolute in all relativity...
