No Time Travel, Sorry 888
MOBE2001 writes "The bad news is that time does not change. Spatial velocity is given as dx/dt. Velocity in time(dt/dt) is nonsensical. As simple as that. In other words, no time travel to the past or the future, no motion in space-time, no wormholes and no hanky-panky with your great, great grandmother. There is only the changing present, aka the NOW. The good news is that distance is an illusion and we'll be able to travel instantly from anywhere to anywhere."
Re:Drinking to much funny-juice (Score:2, Interesting)
Don't trust articles with no author (Score:2, Interesting)
Not nearly as cool as timecube... (Score:5, Interesting)
Re: Really? A tie? (Score:3, Interesting)
OK, let's say that you and I race to 1:00pm tomorrow. You decide to stay right where you are and wait for 1pm to arrive. I, however, jump in my ship for a trip around the solar system at relativistic speeds and meet you there. When 1pm comes around we are both there, but you've aged like 24 hours while I've only aged a couple of minutes. I would say I have won because it took me less time to get there.
Re:Drinking to much funny-juice (Score:3, Interesting)
Very true yet hard to convince folks that our perception of "time" is just and only that, our perception, filtered through sensory organs, language and symbols, thought and then socially acceptable explanations.
I suspect that time will show (heh) that our perception of our Universe and it's actions and what's really going on are very different -- we are severely limited by our perceptions and so see the Universe in a very specific way which isn't necessarily helpful in determining truth. Hopefully the quantum science folks will get us further down the path to the truth of space and matter, which will likely prove to be two different ways of seeing the very same thing. In other words, it's our perception which creates differences in "things" which otherwise may not be so very different after all.
The ancient Hindus deduced that the Universe is an illusion. The quantum science folks may reach the same conclusion impirically.
The math: illusion *
Layman's terms: What you sense _is_ your Universe, there is nothing more.
Curved spacetime (Score:2, Interesting)
You have to use Christoffel symbols. Whip out your favorite copy of differential equations in curved coordinate systems, or read up on it here: http://en.wikipedia.org/wiki/Curved_spacetime [wikipedia.org]
Re: Really? A tie? (Score:4, Interesting)
you are all missing the best part of the web site (Score:2, Interesting)
(S)He writes:
"I started working on Animal (around 1995; see history) years before I formulated my biblical hypothesis. As I get more and more confident about the accuracy of my interpretation of the biblical metaphors, I will incorporate my findings into it. I hope to have it learn the game of chess on its own, including the rules of play. If my hypothesis is correct, there is no limit to how competent the program can be at playing chess. "
Do I really need to give a context?
(I hope I don't somehow offend any Christians out there- I've never heard of a denomination that believe's Jesus' real message was how to win at chess...)
Re:casuality is the key (Score:4, Interesting)
You do your little god thing, rearranging everything in the universe as it should be according to your snapshot, with a few exceptions... Marty and the Delorean. He didn't travel back in time, though, to him it can look like nothing else. But by the metatime clock that you the god uses, time has rolled on as it always has, only the universe was partially reset once or twice. I like this interpretation better, because you don't have to play mindfuck games with it.
Re:Drinking to much funny-juice (Score:2, Interesting)
In an environment where there was no motion there would be no passage of time. In an environment where there was no memory there would be no concept of time.
Time is an illusion.
The only way to time travel would be to force every particle of matter and every bit of energy back to where it was at some point we remember from the past. Then we would have the perfect illusion of time travel.
Nobody could ever prove it wasn't time travel because everything we could ever use to disprove it would have been affected.
Re:casuality is the key (Score:3, Interesting)
Re:casuality is the key (Score:3, Interesting)
Re:Actually, ... (Score:3, Interesting)
Re:Drinking to much funny-juice (Score:3, Interesting)
Re: Really? A tie? (Score:3, Interesting)
Re:When I want to go forward or backward in Time.. (Score:1, Interesting)
http://physicsmathforums.com/showthread.php?t=60 [physicsmathforums.com]
Book on Moving Dimensions Theory Due Out in Fall 05
Moving Dimensions Theory
By Dr. E
http://physicsmathforums.com/ [physicsmathforums.com]
Questions Addressed by MDT:
Why is the speed of light constant in all frames?
Why are light and energy quantized?
How can matter display both wave and particle properties?
Why are there non-local effects in quantum mechanics?
Why does time stop at the speed of light?
How come a photon does not age?
Why are inertial mass and gravitational mass the same thing?
Why do moving bodies exhibit length contraction?
Why are mass and energy equivalent?
Why does time's arrow point in the direction it points in? Why entropy?
Why do photons appear as spherically-symmetric wavefronts traveling with the velocity c?
Why is there a minus sign in the following metric? x^2+y^2+z^2-c^2t^2=s^2
What deeper reality underlies Einstein's postulates of relativity?
What deeper reality underlies Newton's laws?
What underlies the laws of Inertia?
Why does general relativity fail at short distances? Why does quantum mechanics dominate at short distances?
Why have so many great minds, Einestin, Godel, Wheeler, Hawking, and Penrose called for a new conception of time?
If at first the idea is not absurd, then there is no hope for it.
--Albert Einstein
If I have seen further it is by standing on the shoulders of giants.
--Isaac Newton
Max Planck, the father of quantum theory, felt that the pioneer scientist must have "a vivid intuitive imagination, for new ideas are not generated by deduction, but by artistically creative imagination."
An important scientific innovation rarely makes its way by gradually winning over and converting its opponents: What does happen is that the opponents gradually die out.
--Max Planck
Moving Dimensions Theory (MDT)
Today I am writing regarding Moving Dimensions Theory--a deeper model for explaining diverse phenomena in both quantum mechanics and relativity.
The General Postulate of Moving Dimensions Theory:
The fourth dimension is expanding relative to the three spatial dimensions.
The Specific Postulate of Moving Dimensions Theory:
The fourth dimension is expanding relative to the three spatial dimensions at the rate of c in quantized units of the Planck length.
Relativistic, classical, and quantum mechanical phenomena, as well as time itself, are emergent properties of this fundamental principle. Newton's laws, the principle of Inertia, Einstein's postulates, and the inherent wave-particle duality of QM may be explained with this model.
A few years back, while surfing a towering wave on the Outer Banks of North Carolina, a beautiful thought occurred to me. Suppose the wave I was riding represented a coordinate in a dimension. Then although I was approaching shore, I was not moving in this dimension.
The dimension itself was moving with me--I was surfing the dimension. In a flash I saw that that is why photons never age--they are moving along with the fourth dimension, and thus stationary relative to it. In another flash I saw that that is why a photon's space-time interval is represented by a null vector, or a 0, no matter how far it travels. Indeed Einstein stated that an object's velocity through space-time was always c--even stationary objects are traveling at the velocity c through time! How could this be, were it not for a fourth expanding dimension, which matter could surf as photons, giving rise to our notion of time? And so it is that Moving Dimensions Theory was born as the wave crested and crashed about me, thundering on down, as I fought to remain surfing amidst the foam, facing the setting sun silhouetting the
Re:Of course time travel is possible! (Score:2, Interesting)