Physicist believes we will travel through time this century

[freeztar]

Talking about traversing wormholes, FTL travel, and jumping through time is only speculation. But I have to admit, it’s lots of fun.

 

It certainly is. I apologize for making it seem like an exercise in futility. Upon re-reading my last post, I would have said it differently. We certainly can never time travel if it is always a "what if". :)

 

Can you please elaborate on Kaku's views regarding time travel and parallel universes?

[futuretalk]

Many physicists believe that an infinite number of universes exist in the cosmos. Many are nearly identical with only very slight differences – Hitler won WW2, etc.

 

The thought is that should a time traveler make changes in the past that would result in creating a different present, the time traveler is immediately thrust into a different universe where that new present already exists.

 

Some day, theorists say, we will actually be able to “universe hop” into other universes. Imagine going to a universe where you exist, but your life is amazing and far better than it is in this universe. We may be given the option of remaining in that new, better universe.

 

Could this science fiction-like scenario ever become reality? It may be a crap shot, but who knows?

[maddog]

Can you please elaborate on Kaku's views regarding time travel and parallel universes?

I can. Michio Kaku's book, Parallel Worlds does go into length about the Many Worlds concept

of Everett and it's possible implication to String theories (and now M-Theory). I do not

recollect where he would have made reference to having a traveler go to one of them. The

breadth of Kaku's discussion was on the ability to detect such a universe. Apparently String

Theories do not prohibit Multiple Universes. In particular Wheeler's concept of Multiple Universes

make no such restriction upon them as being similar. :shrug:

 

maddog

[Tormod]

Marcus Chown touches on this topic in his book "The Universe Next Door", which I didn't really like. He's a good writer but the book is too speculative and sensationalist.

 

Amazon.com: The Universe Next Door: The Making of Tomorrow's Science: Marcus Chown: Books http://www.amazon.com/Universe-Next-Door-Tomorrows-Science/dp/0195168844/

[DFINITLYDISTRUBD]

Boy that really sucks .....for a bit there I thought Orby had come back to play.....As to time travel.....sudo science at best, bullshplitz more likely....as valid as saying we'll all meet god and he'll tell us the meaning of life someday.

[DFINITLYDISTRUBD]

(Which is about as valid as sayin y'all will eagerly worship me and build altars to me in worship of my great wisdom:hihi:)

[Moontanman]

Well DD, you build that alter and worship me faithfully I will indeed let you in on the secrete of a happy and fulfilling life, I promise.... ;)

 

OBTW sending the occasional virgin (or non virgin for that matter) to me to have my way with her will help too....

[DFINITLYDISTRUBD]

;)

To quote a wise feller of highest esteem "I wasn't born to follow"

[Moontanman]

Then suffer and toil in ignorance for the rest of your days..... Which of course you would have done any way since you don't get the info until you die....

[UncleAl]

Time travel violates causality. The universe does not tolerate contradiction. No time travel.

[TheBigDog]

With some effort we can affect the relative rate at which we travel through time, but we cannot change the direction of travel.

 

Bill

[enorbet2]

Perhaps one of the greatest arguments against time travel into the past is that we've had no visitors from the future. If we assume time travel were to become commonplace even in a thousand years from now and further assume the human race doesn't self-destruct shortly after getting that far, then there are some thousands maybe even millions of years in which travelers could return to this time. With such high number of visitors someone would mess up and be revealed or their time machine discovered. The only argument qualifying that one is if there is some arbitrary (to us) time limit, say a 20 year window, within which one can return. This would imply that at some threshold time we would be inundated with tourists! As much as I'd like to see life first form in a shallow sea, a T Rex or a Pterodactyl, or even the obvious, the Pyramids being built or even just see them as they were when first completed, shiny white granite with a gold top, if the price is tourists from the future everywhere, count me out.

 

Bottom line - every year that goes by with no visitors decreases the odds that it ever occurs. So if it is truly physically possible that might imply humans never build it. I hope that does not have ominous overtones for the future of mankind or intelligence.

[Pluto]

G'day from the land of ozzzzzzz

 

 

Time is not the issue. It has no "THing" to change.

 

The problem is how to handle the matter changes.

[lemit]

I remember from studying pseudoscience many years ago that subatomic particles appear to be capable of time travel. That they do so, or appear to do so, does not mean that atomic structures could do so, or necessarily even that those subatomic particles do so, since our ability to observe is limited. In other words, don't invest too much on those time travel tickets.

 

Can anybody who really knows physics take a cold shower and tell me if I'm right?

 

I know I should be excited about this brave new world of physics, but I've been lying in my backyard, watching mesocyclones form, with their turbulence eddies trailing behind, trying to figure out how and why some of those eddies will become killer tornadoes hundreds or thousands of miles from here while most are disappearing before my eyes. Could what I see in those clouds while I'm lying here in the microburst capitol of the world also have larger applications? Could the rapidly changing microclimates here teach us about the macroclimates in a way that would help us preserve all those macroclimates for a few more generations? So many solutions seem possible if only we apply our observations and our dreams to the world that feels like it is almost at our fingertips.

 

. . . . . . .

 

Sorry, I get kind of lost in thought, looking at those clouds. Who were we talking about? Let's see, Ronald Mallett . . . . Isn't he Keith's brother? Now there's somebody whose work I've admired for a long time.

 

--lemit

[lemit]

Wait!I think I just figured it out!

 

We ship the genetic code ahead so when those subatomic particles arrive, the assembly instructions will already be there.

 

--lemit

[Pluto]

G'day from the land of ozzzzz

 

Time travel is a fantasy.

 

Some people are dreamers and thats OK.

 

 

Time travel

NOVA Online | Time Travel

 

This is interesting movie on Time Travel

TimeTravel Experiments, Parallel Universes, Stargates, 2012 and New Revelations http://video.google.com/videoplay?docid=8242243689164201392

 

How to travel through time.

Time traveling Video ? 5min.com http://www.5min.com/Video/How-to-Travel-Through-Time-2449449

 

How Time Travel Will Work

HowStuffWorks "How Time Travel Will Work"

 

Keep Dreaming you never know if you never ever go.

[velasoraptor]

i think first we have to understand what the 'time' actually is??

since all events in this universe occurs in an specific order i.e. one event is triggered by its previous events and will trigger some different event and so on.......

its just the previous events we say happened in PAST of our current PRESENT and will fruit into some FUTURE event.

as we know present event is combination of few past events and is a part of multiple future events.

i know it sounds confusing but it is what is happening.

we all are actually travelling into the future at the rate of 1second/second naturally without any time machine.

so what we need is to go in to the future is to some how travel at speed of 2seconds/second and you will end up in 1 second ahead into the future of now(current state).

similarly if somehow you travel at speed -1second/second (i don't know if it is valid???:dog:) then you will(were) end up in to your own past at 1 second lesser than your current state. Note: here current state means the moment you attempt such travel.

 

Because,

PAST-PRESENT-FUTURE

was-is-will

gone-here-reach.

 

we all have a definite PAST-only SINGLE PRESENT-multiple FUTURES.......:(