Is Time Machine made Someday or really Works???
And What Abt the Einstein Concept/theory for time machine???

According to Einstein, time travel could be possible... or at least the math does not say that it is impossible.

exactly einstein theory of relativity also told abt this that if we travels with the speed of lite with same speed then its possible....n its a new success for us to see future...n if we do this...we cn travels 10000 years...wen we r only one year in the earth...its so amazing for everyone....

All fictional time travelling theories are based on a euclidean universe and not 4th dimensional spacetime. Most scifi is newtonian/euclidean and not relativistic.

You can't navigate time in relativity. Its forward motion is a physical dimension but it is diluted by mass-energy topography and velocity vectors. All motion is time travel and also space warping.
A time machine to navigate time however is like trying to draw a one-dimensional object. You need all four dimensions just to exist. Any break in any of them cancels all existence everywhere.

From Discover magazine: Newsflash: Time May Not Exist

Every breath we take. Each beat of our hearts.

Brings us closer to our final rest.

Time after death, for the living, can be guessed at.

How fast are you traveling through this dimension of time?

Be careful of time travel...

https://www.youtube.com/watch?v=L3LHAlcrTRA

I thought the movie Primer had the best grasp of how time travel would work if it was possible. To simplify it, turn on the machine at 6am, wait 6 hours untill noon and enter the machine, and sit in it 6 hours untill 6am arrives again. Your body experiences 12 hours while the world has not. Sort of setting an anchor in time, and pulling yourself back to it. Much better explaination than injecting 1.21 gigawatts into a flux capasitor traveling at 88 mph magicly opens portals in time.

hope your Fishing is better than your Physics!

I believe that there are many realities out there, practically infinite, and when/if someone were to travel back in time, that someone would wind up in one of those realities. That way, no matter what you do in that new reality, you can't alter the timeline in this one.

Time is abstract. One can neither travel forward in time nor backward in time.

Time is just a physical dimension like the other three. You need all four for anything to exist.

eg.
A one dimensional object has length but no breadth or width. It is just an imaginary line between two points, it is not an object.

A two dimensional object has length and breadth but no width. It has no physical substance with absolutely zero width so it is just an imaginary area and not an object.

A three dimensional object has length, breadth and width but does not exist in time, it is just an imaginary object and not real as yet.

A fourth dimensional object has length, breadth and width, and time is passing for its existence. It exists.

Hence what Einstein did was accentuate the fact that earlier beliefs in only three dimensions were inherently incorrect, and that what we thought was three dimensional was in fact fourth dimensional spacetime, because without time it doesn't exist.

Now, talking about time travel in real world physics is exactly like talking about 2nd dimensional travel. It's nonsensical to start with, and the first question is, what about the other 3 (dimensions)? If you don't have them all together as one, it just plain doesn't exist anywhere but inside your head.

Or to be pedantic, more correctly, if you think of "time travel" as fourth dimensional travel, then it is identical to mundane relative velocity vectors, and subject to special relativity, meaning all regular movement is already time travel. And it is, it really is. The muon experiment proved it. Time dilates because lengths contract.

You can spacewarp literally using regular everyday technology we have on this earth today right now, and travel a distance that at the speed your spacecraft goes would take you 2 lifetimes and yet you would experience only 1 lifetime of travel to get that same distance. Just like in Star Trek or Star Wars or any other scifi rendition of spacewarping, hyperjumps, subspace drives, etc.
That's just regular everyday technology, because that's just how regular everyday physics actually works and is proved to work.
GPS actually relies on the theory to be correct or it wouldn't be accurate, because GPS uses special relativity to adjust results for accuracy (satellites travel at a velocity vector some 30,000 km/h more than us here on earth so special relativity comes into play).

The only thing stopping us visiting nearby stars is expense and the fact there's nothing there anyway.
The cost, think decades worth of national debt just to send astronauts to a dead star. But the physics is no problem, we can do that right now if you want.

Nobody wants. Kind of reasonable I think.


Oh, bringing it back from the detraction there, what I'm saying is time isn't a constant. Speed of light is the constant. Newton and Euclid thought time was a constant, it's not. Speed of light in vacuo is the universal constant. Time is just relative.
Time only exists when it is passing. The rate is irrelevent. The fact it is passing means something can exist. That's all there is to know about time intrinsic.

The above statements are incorrect.



"Think Like Einstein
by Rick Groleau

Ever since Einstein revealed his special theory of relativity, we've known that time travel—at least moving forward through time—is possible. Einstein didn't pull this theory, or even the notion that time travel is possible, out of thin air. Rather, he took the knowledge of the day, saw an inconsistency—a piece of a puzzle that didn't fit, so to speak—and thought about possible explanations."

The following is a good discussion based on Einstein's Special Theory of Relativity. I suggest Vanaheim read it since all his comments would indicate no formal education in the topic. It is written for the non-physics major.

http://www.pbs.org/wgbh/nova/physics/traveling-through-time.html

metalwing, if you can't show math for navigation of time independent of other physical dimension then I suggest it is your lacking rather than mine. I have a copy of Einstein's 1922 combined publication, all the math in which time is mentioned involves the others. There is no math for one without the others, in fact he goes to length stipulating precisely this, and that is what the math shows.

Challenge the statements fine, but show the math, not argumentation bud. I'm not into fights on the playground, they're for kids. Show the math.

? O_o

Good book mr hg wells and fab film that 1960 one Time Machine (1960 one)- where else would thee see a cigar, bent in two, like a human form, travel through time in a miniature version...honest i am not making this up...bit at the start with his peers swilling brandy and talking pants

1. He states that space and time are conjoined; meshed if you like, 2 parts of one whole, or a dimension, an integral property (hmm what does that mean of dark energy thence and the vacuum arguing tomfoolery- anyhoo) I am not sure anyone can properly imagine that, perhaps he really did.
2. Mass or energy will warp/deform this dimension or fabric – it has substance you can imagine it as a solid liquid fabric and so on and err away from the poor 3d representation in 2d format – it exists within all planes 360 degrees times 360 degrees – better you tube that as the deformation of space times is 100% mis-represented in any documentaries thee have seen
3.Anything with mass/energy will warp space time to one degree or another – therefore time varies everywhere – from near imperceptible to near (seemingly) eternal the bigger the gravity well with with a spacial reference frame i mean, I think
4. An argument can also be made that light-travelling perturbs space time – on account of light being energy – and mr tysons idea of a time machine – frankly i have no idea of the built that
5.Currently mad loon scientists aside there is no working prototypes anywhere save crafty mr Tyson’s take on the matter – but then at best that encompasses a neutron or was it proton...how they prove that is beyond my mind.....but his concept require 3 lasers, i think, swirling space time...actually you should, in theory be able to rip open space time with 3 powerful lasers – if anyone cares
6.Where was I
7.Why are you asking
8.An argument can be made UFO, perhaps some, perhaps none perhaps all, are us past present future wandering the ether...ones does not necessarily have to break any established laws of science to accomplish this – it merely requires a different thinker, or craftiness or insane genius
9.There have been many pants arguments regarding the paradox issue and whether time is linear
10.If light is not constant then time may sooner or later come to a complete halt in eg 5 billion years – redshift meh shift...there sure are many theories out there
I hope that helped a little

I will ask here what I asked in a similar thread: How do you define "time"?

.. I am looking at me in the present..

. now I'm looking up at me in. the past.

.. Eureka I time traveled.