Posted on 06/23/2014 10:54:00 AM PDT by Red Badger
University of Queensland researchers say photons can move through time A simulation of two wormhole-travelling photons found they could interact This suggests, at the smallest scales, jumping through time is possible The experiment could solve some famous theories that 'prevent' time travel But whether this will be possible on a larger scale remains to be seen
If a time traveller went back in time and stopped their own grandparents from meeting, would they prevent their own birth?
That’s the crux of an infamous theory known as the 'grandfather paradox', which is often said to mean time travel is impossible - but some researchers think otherwise.
A group of scientists have, for the first time, simulated how two time-travelling photons would interact, suggesting that, at a quantum level at least, jumping through time might be possible.
The research was carried out by a team of researchers at the University of Queensland in Australia and their results are published in the journal Nature Communications. The study used photons - single particles of light - to simulate quantum particles travelling back through time.
By studying their behaviour, the scientists revealed possible bizarre aspects of modern physics.
(Excerpt) Read more at dailymail.co.uk ...
12 33 44. 56. 69. 77.
No.
Exactly...........
Time travel is not possible. We can’t go back to the past, nor can we go into the future.
The universe was designed for constant change, and that change is manifested as matter and energy being converted as “time passes”. The universe is evolving right before our eyes, and we see it constantly. Every “new instant” brings about a change that was inevitable. That change will instantly fall into the past, and a new instant and current version of the universe will come into existence.
Time is just a measurement of change. We cannot undo the changes. We are “limited” in our capacity to change the current instance of the universe, even as we are agents of change for our immediate environment. We will “flow” into the future, and it’s the only destiny for humans and the whole universe. The universe will never “flow” backwards, which means that, humans can’t go back to the past.
However, the past will still exist. It will be there, but unreachable. That’s the design.
That unreachable past will continue to affect all the “new instances” of the universe. In fact, that past, and all of its instances of the past universe, are what cosmologist call “dark energy and dark matter”. That past comprises most of the “single universal constant”. The current instance of the universe is being affected by “all” of the past instances of the universe. Only the most basic of particles are able to interact with the past; likewise, only the most basic of particles from the past can interact with the “newer instances” of the universe’s instances.
The farther back an instance of the universe, the less interactions there will be with the “current instance” of the universe. The “most recent” instances of the universe, will have the most interactions with the current instance. So, going back to an older instance of the universe, will get more difficult, and perhaps impossible. Thus, we can’t go back in time, except to the more recent of instances of the universe.
(And, I don’t know what I just said, or where it came from; I just stay awake late at night trying to figure out how the universe began, and why it behaves as it does. When I have finally figured it all out, I will be dead).
BTW, there was no “Big Bang”, other than the TV show.
LOL! Thanks!
Did you hear about the insomniac, dyslexic agnostic?
He lays awake at night wondering if there is a dog.................
No, it is two views of the same matter from two different perspectives. You can't say "at the same time" or simultaneous because time is dependent on the perspective.
You can look up in the sky and see a nice big red healthy star -- or be close to it and watch an exploding supernova. No contradiction in that. Same matter, two perspectives.
Maybe not impossible, just very unwise.
Seeing is not the same as existing at the same time, concurrently.
You can see the star, up close and immediate, with maybe a few minutes of delay, or from far away with millions of years of delay.............
Dr. Who bump.
If you were in a speeding spaceship at the speed of light you might perceive that only a minute has passed since your last observation. Back on earth your friends (were they exceptionally long-lived, by their clock) perceive that millions of years have passed. Both views exist, both are valid. So are time travelers' perceptions.
same time, concurrently
You can't use those terms in the relativistic universe. Both are dependent on perspective.
It’s possible that the earliest time we can travel back to would only begin when a wormhole big enough is opened...and that may not have happened yet.
Good one. BTW, I thought we’ve been time travelling since 1944, some say the Kecksburg, PA UFO from 1965 was a Nazi time machine (some say it was captured alien tech) from 1944 that travelled ahead to 1965.
Please PM me if you are a Freeper from the future. I’ve got some questions.
Nope. If it worked we would have known about it from visitors from the future. Since the future hasn’t happened yet ....
I beg to differ. Your existence and mass in the 4 dimensions are set (I believe we’re in agreement on this part). If you go “back” to an earlier period in time you will not exist in the current period. Matter and energy are going to be conserved in there somehow.
Now, you may have to be turned to energy and “re-written” on that past period, but you are going to disappear in the here and now going forward (barring consideration of “many universes” theory) and the net matter-energy budget for the 4 dimensions is going to remain balanced.
The question that would arise to me out of this is that you would alter the net energy balance of the universe. I.e. as a whole, the amount would remain the same, but you would be changing the concentration of it back on the time pathway at some point. How this would re-equilibrate and what that process would mean/do to the past and present would definitely warrant study before doing it.
Good...I want to go back to a certain place and time for a short visit...lol
Actually we can go back in times. I love looking at old photographs of people and scenes back in the 1800’s - one selfie was taken in 1839. Of late there’s Shorpy.com where you can view people being people on the beach and in the cities, etc at the turn of the 20th. cent.
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