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  • #16
    well, it's been known that a solar sail works, and the "solar wind" must have some way of physically putting force against an object

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    • #17
      Originally posted by Jakeman
      i learned that light does not have mass but exibits properties of a mass sometimes... like the fact that light can be "bent" by a black hole.
      I thought there was no light inside a Black Hole? I thought that a Black Hole sucks out all of the light?

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      • #18
        Originally posted by heretic
        gravity is the attraction of the combined atoms of a mass to another given set of them, just like molecules attract.
        Ah, but can you explain why they attract? How about how the process of that attraction works?
        :)

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        • #19
          Originally posted by eiSecure
          Ah, but can you explain why they attract? How about how the process of that attraction works?
          Curvature of space-time...
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          • #20
            My Answer: We never build a time machine
            Why I think so: If someone built a time machine somewhere in the future that was able to go back in time, then they would probably want to try it out, a lot. Don't you think there would be time tourists everywhere around us, since there's no doubt people in the future would want to see what the second millenium was like compared to the first?

            Either that, or all the strange people I know are time travelers

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            • #21
              Time travel -

              I'll believe it when I see it. Until then it's quite futile to think about all the implcations of it. It might not even be possible to travel in time.
              Well, there it is.
              - Keeper of the Grove

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              • #22
                Maybe it's possible but it's so likely that you'd screw up the timeline and make yourself not exist (paradox, not to mention Back to the Future I).
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                • #23
                  Originally posted by filburt1
                  Maybe it's possible but it's so likely that you'd screw up the timeline and make yourself not exist (paradox, not to mention Back to the Future I).

                  im not the smartest person in the world, but if i went back in time to say, 1956 today, wouldent i had been there in 1956?, the way i look at it is that if you where ment to time travel you would have already did it before you did it. eh im confussing myself again

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                  • #24
                    That's what makes it a paradox
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                    • #25
                      As I said I do not think it will create a paradox.

                      I would suspect you would actually create another universe/dimension the moment you time travel so there is no paradox since your original universe is gone and you exist independant of it.

                      Perhaps something like this:
                      Lets say you jump to 5 hours ago, stay for 5 minutes, and leave.

                      Code:
                      Dimension 1:
                      
                      Sept 26 
                      16:00 EST 21:00 EST
                        ^         ^ 
                      <-----------| time travel, Dimension #1 is destroyed
                      
                      Dimension 1`:
                      16:00 EST 
                        ^ 
                        | jump back to 21:00
                        
                        
                      Dimension 1`:
                      16:00 EST 21:00 EST
                        ^         ^ 
                        |---------> arrive in D1` 5 hours later
                      So whatever you do it will not affect your current self since you are a D1 person in a D1` dimension.

                      The universe is not dumb, it would not let you destroy it because you were foolhardy enough to mess with time. Now whether or not it would allow you to jump around in time in the first place is a big question!
                      Matt
                      Sybase DBA / PHP fanatic
                      Sybase v. MySQL v. Oracle | Why I don't like MySQL | Download Sybase TODAY! | Visit DBForums.com!

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                      • #26
                        Or perhaps something like this:


                        PHP Code:


                        function jumpdate to_datePerson you ) {

                          
                        // Stop the presses!
                          
                        Dimension.Pause( );
                          
                          
                        // Temporarily remove you
                          
                        Dimension.Removeyou );
                          
                          
                        // Increment the version ID
                          
                        Dimension.Version++;
                          
                          
                        // Change the date
                          
                        Dimension.Time.Setto_date );
                          
                          
                        // Put you back in
                          
                        Dimension.Addyou );
                          
                          
                        // Restart
                          
                        Dimension.Resume( );
                          
                        // end function 
                        So your version counter is different than everyone else's. That way you could kill your version+1 self a moment before you were to time travel but it really isn't 'you'.
                        Last edited by MattR; Thu 26 Sep '02, 5:02pm.
                        Matt
                        Sybase DBA / PHP fanatic
                        Sybase v. MySQL v. Oracle | Why I don't like MySQL | Download Sybase TODAY! | Visit DBForums.com!

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                        • #27
                          So the universe is coded in PHP *rubs chin thoughtfully*
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                          • #28
                            It is probably done in C or more likely, assembly.
                            Matt
                            Sybase DBA / PHP fanatic
                            Sybase v. MySQL v. Oracle | Why I don't like MySQL | Download Sybase TODAY! | Visit DBForums.com!

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                            • #29
                              Er... Anyway, has anyone here played Shadow of Destiny for the Playstation II? It deals a lot with going back/forward in time in order to prevent your own gruesome murder. It's a very interesting (albeit confusing) game.
                              http://www.arsegaming.com/dice/index.php/stuff.jpg

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                              • #30
                                Originally posted by Radon3k
                                I thought there was no light inside a Black Hole? I thought that a Black Hole sucks out all of the light?
                                Here's a definition for you.

                                A black hole occurs when gravity is so strong around an object (probably the remnants of an ultra-dense star that has collapsed on itself) that light travelling through the gravity field slows down to the point where it cannot escape beyond a certain distance from the object. At some point, black holes do have light "within" them -- but it can't reach us because it gets trapped somewhere above the surface of the star; or in the later stages of a black hole, the gravity is so strong that it pulls the photons in to add to the black hole's mass.
                                iComix :: web comics

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