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Thread: Meaning of Time

  1. #1 Meaning of Time 
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    New to the forum..but fascinated bout the topics on this thread..

    Well..

    Can it be true to say that time is the delta or difference between the state of the most fundamental quantum element (strings or particles) from a point A to point B spatial dimension???

    This helps me to understand how there is no time in a very small small curve 3d universe (eg bigban or in blackholes )

    what do u guys think??

    Therefore if such is the case the faster u travel relative to someone standing . Because you are travelling your space would be reduced
    say...

    if space is of size 5

    0 -> 1 -> 2 -> 3 -> 4 -> 5
    if some one runs quicker and quicker the space between himself and the limit of space in our case is 5 would be reduce..as it is approaching 5 as oppose someone standing.
    So..it would mean that time or again the difference between point A to point B would be smaller.

    So if this is true...........does it mean that time ran slower when the universe began??? ie at the point that the spatial dimensions were miniscule compare to the scale of it today!??!??!


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  3. #2  
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    When something exists in space, then it is affected by time, because space and time are linked. A black hole singularity has no spatial dimensions, so time stops at the singularity. Theoretically, someone at a singularity would see events outside racing by. However, the universe is itself space-time, so the passage of time is always the same in the universe, since there is no "outside" frame of references for comparison.


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  4. #3  
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    So again...that this means that at the beginning of the universe since its dimension compare to today would had been small...does it mean that time ran slower than today???
    eg 1 sec would had meant like years and years in todays time?!?!?
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  5. #4  
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    You have to remember that time is always measured relative to something else (one second is the space between a "tik" and a "tok"). With that given it is pretty meaningless to say that time ran more slowly or faster.
    Disclaimer: I do not declare myself to be an expert on ANY subject. If I state something as fact that is obviously wrong, please don't hesitate to correct me. I welcome such corrections in an attempt to be as truthful and accurate as possible.

    "Gullibility kills" - Carl Sagan
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  6. #5  
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    ok then..so relative to todays measure of time..tik tok...
    time at the beginning of the universe..did it ran slower relative to today??
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  7. #6  
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    Time is simply a way to measure the speed at which something is happening relative to something else. In the very early universe everything was simply, hot. So to be clear, there is really no such thing as absolute time against which two events can be measured.
    Disclaimer: I do not declare myself to be an expert on ANY subject. If I state something as fact that is obviously wrong, please don't hesitate to correct me. I welcome such corrections in an attempt to be as truthful and accurate as possible.

    "Gullibility kills" - Carl Sagan
    "All people know the same truth. Our lives consist of how we chose to distort it." - Harry Block
    "It is the mark of an educated mind to be able to entertain a thought without accepting it." - Aristotle
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  8. #7  
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    so the concept of time slowing down as the faster you travel.
    this really means that you are exerting more energy on the spatial dimension than on the time dimension??

    say if there were only 2 dimensions in our universe...


    you could go 100% on dimension A or 100% on dimension B

    if you go 20% on dimension A it means you must be travelling also 80% on dimension B and viz a viz.

    so to travel 100% on dimension A it would mean that you will not travel on dimension B (0%)
    so 100% on dimension A is the same as saying travelling at the speed of light. as this will imply that time would stop ??

    so given the above explanation it satisfies that time is not a function of spatial dimension, and that time is a function of momentum you take acrross your chosen dimension ie up down, left right, back front... + time...
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  9. #8 No 
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    http://curious.astro.cornell.edu/que...php?number=731

    If you don't move at all, time still passes because you exist in space time.
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  10. #9  
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    I've come across a though before that I posted on this forum that if space and time are linked then wouldn't time be expanding with space? And if time were expanding with space and the light from far away galaxies was stretching with both time and space would that make it seem the galaxies are increasing in their speeds. And if this is so perhaps the galaxies aren't actually increasing and there is no such thing as dark energy.

    Unfortuneatly I think everyone on this forum thought I was crazy for even thinking such a thing but, as I don't think anyone really knows why time does what it does I think that this question would be very hard to answer. Like why does time slow down when exposed to gravity?

    Actually I just got another idea. If matter in the universe emits gravity and the gravity then as the matter travels further and further apart the gravitational effect the space between the stars lessens which then makes time speed up and makes it appear that the galaxies are increasing in speed as they travel away from us, which they actually aren't, it's merely the result of the gravity between us being stretched and the increase in time between us.
    "The trouble with the world is that the stupid are cocksure and the intelligent are full of doubt" - Bertrand Russell
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  11. #10 Re: No 
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    Quote Originally Posted by Arch2008
    http://curious.astro.cornell.edu/question.php?number=731

    If you don't move at all, time still passes because you exist in space time.
    The same as I was saying...
    if you dont move through the spatial dimensions it will imply that 100% of your effort would go to time. and time would travel without being slowed relative to someone moving.

    the question then becomes why is it that time only flows on the one direction?
    what does it mean for time to flow on the opposite direction?
    What does it mean for the spatial dimensions??

    Again it feels like we have to somehow inverse the spatial dimensions in order to for time to flow on the opposite direction?!?!
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  12. #11  
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    Gee, I could have sworn that you didn’t say that and you haven’t said it yet.
    Time passes regardless of your spatial ‘efforts’. Time is only slowed near a singularity or near the speed of light and not because of one’s efforts, but because of the laws of space time.
    The ‘direction’ and all other properties of time are a result of the way our universe formed. For time to ‘flow’ in an opposite direction then a series of events would reverse and the events would seem to undo themselves. However, ‘negative’ movement through this series of events does not create negative dimensions. They remain the same.
    Mathematically, it is possible to draw a line with a positive and negative component and then to label the line ‘time’ or ‘space’. Alternately, one could label the line ‘temperature in Kelvin degree’, except that there is simply no negative component to the Kelvin scale. Zero degree Kelvin is an absolute, like the direction of ‘flow’ of time, so this would simply make no sense in our universe. Similarly, what are negative spatial dimensions? A black hole singularity has no spatial dimensions and string theory supposes more than three spatial dimensions, but what are these negative dimensions you mention?
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  13. #12  
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    Quote Originally Posted by Arch2008
    Gee, I could have sworn that you didn’t say that and you haven’t said it yet.
    if you read my earlier post it says
    you could go 100% on dimension A or 100% on dimension B

    if you go 20% on dimension A it means you must be travelling also 80% on dimension B and viz a viz.

    so to travel 100% on dimension A it would mean that you will not travel on dimension B (0%)
    so 100% on dimension A is the same as saying travelling at the speed of light. as this will imply that time would stop ??
    So in effect is another way of saying what you said...
    If you don't move at all, time still passes because you exist in space time.

    But the difference is that I say the passage of time depends on the movements that you take over any of the spatial dimensions.
    Now the reference to inverse the spatial dimensions came because if you assume that any movement on any of the spatial dimensions allows for time to slow down at least by a fraction. It seems that somehow you had to inverse..and i know it doesnt make much sense...but then again...having more than 3 spatial dimensions as M theory would suggest does not make sense too!...

    But if you say that it is impossible for time to flow backwards given the configuration of our universe. Then could you or anyone explain whats the real meaning of traveling back in time.
    wormholes???
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  14. #13  
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    Actually, I kind of made it a personal rule to read something before I respond to it. What you said, and continue to say, is not ‘in effect’ what I am saying. Time passes whether you move or not and if you moved at the speed of light, then time would still pass for you, just not at the same rate as people not moving at the speed of light.
    You speak of traveling back in time as though this is something that actually happens. It doesn’t, so we would have to explain the impossible. Science fiction writers use wormholes to link two regions in space time. The science of wormholes is very intriguing. You enter one end of a stable wormhole and exit the other end at a point light years away. Since space and time are linked, then you might also be able to come out in a different time. The part non-scientists fail to mention is that walking through the wormhole may be like traveling at the speed of light. A few seconds pass in your time frame, but when you exit the wormhole, perhaps millions of years have passed in normal space.
    BTW, the universe works whether we can make sense of it or not.
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  15. #14  
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    Since you've mentioned M-theory, the strings are thought to be vibrating. This vibration constantly changes the possition of the strings comprising matter and in so doing (along with spatial movement) creates a history of movement or a 'world line' relative to other strings that cumulatively provide the 'arrow' of time. For a body like a spaceship with occupants to be able to travel back in time, the vibrational and spatial history of each string would have to go in reverse. As far as I know, that is the only conceivable way to travel back in time and I know of no process that would be able to accomplish this.
    Disclaimer: I do not declare myself to be an expert on ANY subject. If I state something as fact that is obviously wrong, please don't hesitate to correct me. I welcome such corrections in an attempt to be as truthful and accurate as possible.

    "Gullibility kills" - Carl Sagan
    "All people know the same truth. Our lives consist of how we chose to distort it." - Harry Block
    "It is the mark of an educated mind to be able to entertain a thought without accepting it." - Aristotle
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