Soldato
- Joined
- 8 Jan 2009
- Posts
- 4,588
We waste so much time here.
What isn't a waste of time is your signature. A+
Permabanned
What if time didn't operate in the same direction for each universe.
1 start may be at anothers end and travel in the opposite direction. Maybe they are like swinging balls where time travels one way, stops then goes the other, all the while those on it think they are only traveling 1 way?
1 start may be at anothers end and travel in the opposite direction. Maybe they are like swinging balls where time travels one way, stops then goes the other, all the while those on it think they are only traveling 1 way?
name one, time travel happens all the time to every object in the universe.
now backwards time travel on the other hand is very debatable.
and as others have said time very much exists and we did not invent it. Just a lot of scientists have given up on it, in fact its probably one of the more fundamental laws, which wont change, unlike most other laws.
Soldato
the time is now...
Man of Honour
Time as we know it is indeed a human concept, but it would also be a concept understood by any intelligent species in the Universe due to the very nature of the distance between two points in the Universe. Light has to travel at a certain speed, and at that speed it takes various values in time to reach any point in the Universe.
As for time travel, well time travel into the future is entirely possible, since time flows at a different rate for people standing either end of something with a super-massive gravitational force, such as a black hole. Astronaughts on-board the ISS experience it on much smaller scale, for example.
Time dilation is a real thing. If you propelled a craft fast enough around a black hole, then you would end up travelling into Earth's future. Observed time would pass faster for you as the traveller on-board, so when you came to a stop, you'd be in the future as far as Earth time goes.
These fall under both special relativity, and general relativity.
Of course such a journey would be a one way event, you would be leaving everyone and everything you knew behind. The physics in the movie Interstellar (ignoring the last 15 minutes
) are sound, Miller's planet they went to where 1 hour there equates to 7 years back in Earth time is a real concept.Time travel into the past is a big can of worms though. Some believe it will never be possible (and I am on that boat also), whereas others believe it would only be possible from the point a time machine was built and turned on. Neil deGrasse Tyson talks briefly about this in a Cosmos episode if I remember right. I don't think going backwards in time will ever be possible due to the humungous paradoxes that come into play by doing so. The major one is likely time-loops. You'd effectively be creating a loop every time you went back in time, because there would be a point where time reaches the point of going back in that timeline's future.
Off the back of that, some also believe there is a timeline for every conceivable event that has happened, or could ever happen, so every time you go back in time, you branch off into a new timeline just for that event, leaving the old timeline to continue its path as it was.
It's all a bit of a mess really, ain't nobody got time fo' dat.
Soldato
It's all relative.
Soldato
One theory about the end of the universe is that it reaches a point where it starts contracting again. If that happens then eventually the universe will collapse in the reverse of what we believe the big bang to be.
Spacetime would cease to exist at that point. So all of history before that point would cease to exist. Not only that but it would never have existed.
Spacetime would cease to exist at that point. So all of history before that point would cease to exist. Not only that but it would never have existed.
Caporegime
If only timecube was still online. That would explain everything.
Soldato
- Joined
- 18 Oct 2012
- Posts
- 8,339
Pint of erskib please!
Caporegime
Time was invented by the Victorians in the 15th century to give virgins and 40 year old internet hornbags a measurable way to count down to the Olsen twins 18th birthday.
Soldato
Old hat theory is old hat, new calculations show the expansion of the universe is accelerating. Current theory revolves around one of the heat death options, basically the Universe will cool itself down and out of existence, there will just be matter in equilibrium with no exchange of energy between particles which is required for the Universe we know now.
Yes I know. I also subscribe to the latest theory of everything just cooling into stasis. But we really don't know. Anything could happen. We can't explain how or why the universe is here or why the rate of expansion changed. We simply can't yet know what will happen in the future.
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Of course such a journey would be a one way event, you would be leaving everyone and everything you knew behind. The physics in the movie Interstellar (ignoring the last 15 minutes
Time travel into the past is a big can of worms though. Some believe it will never be possible (and I am on that boat also), whereas others believe it would only be possible from the point a time machine was built and turned on. Neil deGrasse Tyson talks briefly about this in a Cosmos episode if I remember right. I don't think going backwards in time will ever be possible due to the humungous paradoxes that come into play by doing so. The major one is likely time-loops. You'd effectively be creating a loop every time you went back in time, because there would be a point where time reaches the point of going back in that timeline's future.
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Great movie. Enjoyed every second!
However that whole series of events simply baffled me. The fact everyone, apart from Matthew didn't age doesn't compute. This whole bending and warping of time... Its surreal!
Permabanned
Would it be wrong to say that time is more of a measurement of speed?
We use it to as our time around the sun, but that in itself would change if earth increased / decreased speed, which is why we have time dialations with gravitational waves? because time is faster / slower while on the wave?
We use it to as our time around the sun, but that in itself would change if earth increased / decreased speed, which is why we have time dialations with gravitational waves? because time is faster / slower while on the wave?