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debating time itself (pg. 6)
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| PointyDC |
Yeah cool topic, heheh, one of those thoughts that are a complete mind-, like what happens after you die. But i was thinking about this, and you find most people relate time to the speed of light then i thought that the speed of light will never be broken. The way i see it, is that if you break the light barrier, you're breaking the time barrier which is what all physics comes down to in the end. So if you managed to do this, you'd probably create something like the original big bang.
But i reckon we'll all find out about the ways of the world when we die. Not from god or any religious stuff, i just reckon we will. Heheheh, that brings on another subject, what happens when you die?
Pointy |
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| randummboy |
hmm.. i dont see why traveling faster than the speed of light is such a big deal.. your not going to dissappeear into thin air or anthing.. because just casue you cant see something, it doenst mean its not there. so lets say you are travelling faster than the speed of light.
you will not beable to see anything, but its still going to be there.. does anyone understand what i'm saying? |
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| davinox |
the only theory i've ever "made up" is that if we went back in time, that there would be no paradox theory.
Paradox theory is DUMB!!!!
Paradox theory is like you couldn't kill your grandpa, because that would mean you wouldn't be born. that is a very humanized scientific approach, and is totally rediculous. Same thing with meeting yourself. You would meet yourself in the past, of course! it's just identical atoms. Remember, time is a different dimension, so things work differently.
We CAN go back and forth through time, imo. We just need an INSANE ammount of energy. And I mean insane. |
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| biznology |
| quote: | Originally posted by randummboy
... so lets say you are travelling faster than the speed of light.
you will not beable to see anything, but its still going to be there.. does anyone understand what i'm saying? |
well in what direction are you traveling? cause if there is light coming towards you, youll be able to see it. its the behind you that you wont see(cause it cant catch you)...i think/ |
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| astroboy |
| quote: | Originally posted by randummboy
hmm.. i dont see why traveling faster than the speed of light is such a big deal.. your not going to dissappeear into thin air or anthing.. because just casue you cant see something, it doenst mean its not there. so lets say you are travelling faster than the speed of light.
you will not beable to see anything, but its still going to be there.. does anyone understand what i'm saying? |
Its not about travelling "faster than light". It's that most modern Physics ceases to make sense at speeds faster than the speed of light. Many formulae produce non-sensical results. For all intents and purposes the state of Physics at the moment is such that the speed of light is the fastest speed possible in this universe. |
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| astroboy |
| quote: | Originally posted by davinox
the only theory i've ever "made up" is that if we went back in time, that there would be no paradox theory.
Paradox theory is DUMB!!!!
Paradox theory is like you couldn't kill your grandpa, because that would mean you wouldn't be born. that is a very humanized scientific approach, and is totally rediculous. Same thing with meeting yourself. You would meet yourself in the past, of course! it's just identical atoms. Remember, time is a different dimension, so things work differently.
We CAN go back and forth through time, imo. We just need an INSANE ammount of energy. And I mean insane. |
Alright explain this to me:
I invent a time machine and decide to go back in time and kill Hitler before he gains power in Germany. If I do go back and succeed then he would never have been in power, the holocaust and WWII will (most probably) never have occured and the period would have not been a particularly interesting one in history. Now fast forward to my birth. I grow up never having known about WWII or the holocaust. I will probably never have heard of Hitler, so when I finally invent my time machine I do not go back to kill Hitler because I don;t even know that he ever existed. But if I do not kill Hitler then he is still alive (in 193x) and does gain power etc... But if he's alive then I do know about him and do go back to kill him... but if I kill him then I don't know about him and.......oh dear I think I've gone cross-eyed again :(. |
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| Renegade |
| quote: | hmm.. i dont see why traveling faster than the speed of light is such a big deal.. your not going to dissappeear into thin air or anthing.. because just casue you cant see something, it doenst mean its not there. so lets say you are travelling faster than the speed of light.
you will not beable to see anything, but its still going to be there.. does anyone understand what i'm saying? |
Yeah but it's basic physics though dude.
The faster an object travels, the greater its mass becomes. If an object were to travel at the speed of light, the mathematics break down, and it has a theoretically infinite mass (I say theoretically firstly because it is impossible for an object to travel that fast, and secondly because no object can have an infinite mass anyway). With black holes they speak of an "infinity" - or a singularity - where the object becomes infinitely dense, but I don't think it's the same thing when it comes to travelling at the speed of light. You just can't do it unfortunately. |
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| {b.s.e.} |
| quote: | Originally posted by astroboy
Alright explain this to me:
I invent a time machine and decide to go back in time and kill Hitler before he gains power in Germany. If I do go back and succeed then he would never have been in power, the holocaust and WWII will (most probably) never have occured and the period would have not been a particularly interesting one in history. Now fast forward to my birth. I grow up never having known about WWII or the holocaust. I will probably never have heard of Hitler, so when I finally invent my time machine I do not go back to kill Hitler because I don;t even know that he ever existed. But if I do not kill Hitler then he is still alive (in 193x) and does gain power etc... But if he's alive then I do know about him and do go back to kill him... but if I kill him then I don't know about him and.......oh dear I think I've gone cross-eyed again :(. |
lmao i hear that. i was going to post something to this effect laaaate last night but i took a 'mental breather' and passed out drunk on my couch. heck.
theoretically though, wouldn't you be able to travel forward in time to the exact time of your departure to the past, thereby arriving..wait....once you've travelled in time, it's almost as if you are removed from your life. because no matter which point in time you return to, there will still be a 'you' in that epoch of time. correct? i don't know.
astroboy - great information on black holes and space...and trippy. :) i was so baked when i read that stuff; then i got all my friends to read it.
ok, but think. say you do go back and kill hitler, then return to the present.
a)there is now two of you?
b)hitler is dead in that reality?
c)possibly 6-8 million new people have been alive for 50 years.. what else could have happened?
but then, think, if you do go back and kill hitler, that means that the past still exists. is there still a past being lived somewhere in the universe? has the future already been realized? i think this is where we get into multi-universes and realities.. which goes far beyond my very basic knowledge of thermodynamics ;)
if anyone cares, the speed of light in vacuum is exactly 299,792,458 m/s (metres per second) :eek: |
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| Renegade |
| quote: | ok, but think. say you do go back and kill hitler, then return to the present.
a)there is now two of you?
b)hitler is dead in that reality?
c)possibly 6-8 million new people have been alive for 50 years.. what else could have happened?
but then, think, if you do go back and kill hitler, that means that the past still exists. is there still a past being lived somewhere in the universe? has the future already been realized? i think this is where we get into multi-universes and realities.. which goes far beyond my very basic knowledge of thermodynamics |
God, now we're getting into it. :p
You have to be careful when talking about time, because like I said before, it's not like it's just a straight line that can be moved up and down, it is a conecpt that's as bound to the laws of physics just like everything else. Firstly, it can be proven that time can be played around with: travelling in space for ten years at close to the speed of light and then returning to Earth will see you come back at the year 3000, even though you've only aged by ten years. So it's possible to slow time down, but only relatively remember: it may have only been 10 years to the people in the space ship, but to everyone on Earth 1000 had passed. There is no absolute time either: every single entity is bound to its own single clock. There is no giant clock in the universe that everything runs by. So to say that you can go "back in time" is a relative thing. Perhaps it is possible to go away for 5 years and come back before you came, but wherever you left from technically wouldn't have come into existence just yet: each event has it's own time-space position, and, depending on how you want to measure it, each object is technically being reborn every second. Nothing is static, and each 0.000000001 seconds that goes by the universe becomes an essentially different universe. You may be able to go back in time, but it's not like you'd just be able to land on Earth circa 1997 - because, of course, you'd be turning up in a universe completely different from the one you left originally (which bring us to the concept of parellel universes, and I'm not going there).
Then of course there's the theory that time, like matter, is prone to decay, and that the process can only be slowed down, not reversed. So, for instance, you can burn a piece of wood (increase entropy) but once you've burnt it, you can't put all the smoke and charcoal back together to form a piece of wood (which would decrease entropy). And perhaps it's the same thing with time: once time has elapsed it cannot be regained. Time may, perhaps, decay irreperably, in which case the year 1997 is lost forever and can never be regained by space travel. That piece of time has been destroyed, as have the entire 3 minutes it's taken you to read this post. In fact, for every word you read in this sentence, a few microseconds are destroyed and consigned to the unreachable annuls of history. Bet you wish you'd done something more useful with your Thursday evening now eh?
But of course, the most damning criticism against time-travel is that we've never had anyone from the future visit us yet. Then again, perhaps the future generations have discovered time-travel yet don't want to use it for fear of irreperably detroying the past and thus their present....
Sod it, I need a bed. |
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| {b.s.e.} |
| lmao this topic requires too much brain power. ;) i'm going to reread that post of yours renegade and get a reply back.. i just don't have the patience to do it right now. you understand, i'm sure. :p |
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| {b.s.e.} |
theoretically, a beam of light traversing a path between two points in space-time curve can take longer to complete the journey than a (hypothetical, of course) spaceship taking advantage of a wormhole’s shortcut connection between the two distinct regions of space-time. now..that's about all i can relate to you guys.
i feel really sorry for phsyisists. |
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