Inside an ordinary office, in an inconspicuous corridor in the Faculty of Physics at the Technion, the doctoral student researcher discusses with the Lebanese processes that are considered by most of the world to be science fiction. About strange universes, time machines and the difficulty of being the only researcher in the field
Michael Shalit
Since its publication, Einstein's theory of general relativity has aroused admiration among many scientists and science enthusiasts around the world. The Torah explains the origin of gravity, which we feel in our flesh every day, in geometrical terms and in an incredibly elegant way. Einstein thought of time as another dimension, like the three spatial dimensions we see around us. Massive bodies distort space, Einstein explained, thus influencing the movement of other bodies in their surroundings.
Physicists from all over the world fell in love with the beauty of the theory, and soon discovered that it also predicts the most surprising phenomena. It turns out that within the framework of the theory of relativity, there is no pure mathematical or physical principle that prohibits the existence of "space-time loops", situations in which some body moves in space and time but eventually returns to the same point, both in space and in time.
As far as that body is concerned, let's say a spaceship with an astronaut inside, time passed as usual. But to those he left behind, it seems he was able to return to his past, having been in the future. You can imagine the "space-time loop" as something similar to a computer game where everything that comes out of the right side of the screen comes back and enters it from the left side.
Modern physics has predicted many phenomena, which seem clearly counterintuitive at first glance, and yet have been observed in many experiments. If so, maybe such "space-time loops" are possible, and our world is even stranger than we thought? This is the question that Dana Lebanon set out to investigate, under the guidance of Prof. Amos Uri from the Faculty of Physics at the Technion.
Dreaming of time machines
"In order to enable 'time travel', space and time itself need to have certain properties and connections," explains Lebanon. "You can imagine many different universes in which you can go back to the past, even without any effort at all, but these are mathematical games. A more interesting problem is the practical question: is it possible to build a time machine in our world, as it is today. It is important to understand that 'to build' means to start from a space like the one that surrounds us, where we can only move forward in time, and create an area where the conditions for a time loop are met. In the research, we found the same features that characterize such an area in space and time."
These features could perhaps be a recipe for theoretical testing of future time machines, but the situation is even more complicated. "That region of space, which could allow something strange like going back in time, must be distorted in an extreme way. It turns out that if a rigid body, let's say a human being, tries to move from a "normal" space into that special area, it will tear apart. This is a phenomenon similar to the behavior of bodies near a black hole, where different parts of the falling body are accelerated at different rates during the fall, and the body disintegrates into pieces", to the dismay of many science fiction enthusiasts.
"There is no one to talk to"
A quick search on the website of the Faculty of Physics will reveal that Prof. Amos Uri is the only one at the Technion who deals with general relations, but few know that he is also one of the only ones in the world who deals seriously with time machines. Prof. Uri supervises a relatively small number of students, which further reduces the number of scientists working on the subject in Israel.
"It's hard," Dana admits to Benoni. "Even on a personal level, there are no students to share ideas and opinions with in a relaxed atmosphere during lunch, and also on a professional level. For a young scientist, this can be a significant problem."
Still, Lebanon is on her way to finishing her doctorate in general relativity in about a year. "I was aware of the problems when I chose the subject of the PhD, but my attraction to the field overcame everything. I don't regret it."
The interview was conducted as part of the "Science in Communication" course at the Technion
At the Technion they developed a theoretical model of a time machine
50 תגובות
It is impossible to exist as a singularity (from the network), without a time frame. Time nurtures a limit that is required to experience uniqueness. A frame of time maintains a certain dose or facet of all that exists. A framework of embodiment or simply uniqueness. The space is another value that "connects". All of these are an infrastructure that supports and enables the creation of a uniqueness that could not have been created otherwise. No-time is basically all times and no-space is basically all spaces, and you will build uniqueness that way when you are scattered everywhere 🙂
A single study is a sign of a bad study. This is a trap that the most talented brilliant people fall into. The professor probably has interpersonal skills that he manages to keep students in research as described which will not lead them anywhere. It's just a scam.
Greetings,
I think "the loneliness of the time traveler" is possible...
I had a special case - jumping from one place to another with a car and a passenger. I can't explain how it happened. If anyone can help me understand this, I would be very happy.
Sincerely
Robin
anonymous:
Nothing that happens in the brain is a return in time.
The brain is using what is recorded in it but it is doing it now.
Claiming that you go back in time through memory is about the same as claiming that you go back in time through a history book.
You are simply experiencing here and now something that may have already happened in the past but left its mark on the material that exists today.
And what about dreams, aren't they physical?
When I dream I am able to go back in time and find myself in situations that have happened to me in the past, I am able to both fly in a dream and die several times, isn't all this physical?
After all, if thought is a physical thing, then time travel is also a physically possible thing, isn't it?
And what about the brain or rather the mind, the only thing (as of today) that is able to 'go back in time'?
After all, the mind is able to 'restore' thoughts/memories from the past, and also 'guess' the future, how does this happen?
Is 'going back in time' or 'jumping forward in time' the only possibility of 'traveling' in time that exists solely in the mind, and would it be impossible to travel in time in other ways?
How about using a laser beam in the time movement, in my opinion it is possible
by asd:
28-08-2009 בשעה 23:30
For many years, Dr. Eli Tousan (Physics - Ben Gurion University Be'er Sheva) researched the subject and published several articles on the subject
The article A NEW DESCRIPTION OF NATURE - THE WAY TO UNIFICATION
Famous were located at:
http:// members.1stnetusa.com/etousson
A groundbreaking, high-level and very innovative article for your perusal, serious professionals Avraham
Point - I understand what you are saying, I was not talking about the philosophical meaning of the concept of time but only about the semantic possibility, after we have already accepted its existence, to treat it as an entire dimension or as a specific point
On a philosophical level, I can argue that if consciousness experiences a dimension of time, then time does exist from the reference point of consciousness, while a reference point where space-time converges to a still model theoretically exists as a tool for explaining relative phenomena, but this does not necessarily mean that it is the image of reality
Thanks, period.
Georgia did not disappoint but, as you can see, I came back in time to comment on the article 🙂
I started going over the articles I missed in my absence but now it's late so I'll postpone the continuation until tomorrow.
Good night.
Welcome back Michael
When she solves the problem, she will no longer be lonely because she will be able to socialize with several copies of herself that she only wants to come from the future to strengthen her hands.
I am:
I got the joke in an email a few months ago but it was nice to go back in time and remember. Really cute joke.
Nadav, when the perception of the world is that the entire universe already exists, then there is no physical movement, it is only a perception of consciousness that moves according to time. In physical reality, the universe is as it is.
Point, it seems to me that you missed what I was trying to say, all in all I pointed to two terms that have the same word but symbolize two different things, I did not claim that the time dimension is separate, I know that it is part of space time, but the word time can symbolize a certain position on the timeline or the entire axis as a whole, just as the word place can symbolize a point in space or the entire space as a whole, and from this we can say that it is possible to move in time or that time moves forward or backward
Regarding the effect of human consciousness on time, it is difficult to say, with our perception of time that constitutes it, so how is it possible for the passage of time that led to the creation of consciousness, that is, the very existence of consciousness can perhaps testify to the existence of some kind of space in which processes that create complex effects like consciousness itself can exist
Eyal, if you accept that the time space always exists, then the "matter" in that time space also exists and does not change, that is, at a certain time T there is one mind that is aware... in this situation there is no meaning in going back in time.
For 35, I have not claimed anywhere that there is no time dimension. Just need to be precise, the time dimension is not separate, it is part of the space-time according to the theory of relativity.
You keep repeating the words "movement in time"
So let's go back one step for a moment: to move in space you need time
So how is it possible to move in time if there is no additional time dimension with which we can move in the time we know.
"I" made me laugh and even more so the reactions of the shocked people from this forum.
point,
Are you pointing to consciousness as something that exists outside the brain, something that is beyond electrical-chemical processes in the brain? I don't understand otherwise what you are trying to say.
In the previous response I was referring to your words: "...the engine that drives us here is the effect of consciousness, and not that the engine is in the dimension of time." If we are in an area of the universe where the space-time fabric is distorted in some way in relation to the environment, and in our lives this distortion changes, we will not feel it. The mind will not grasp it. Everything moves according to this fabric. This is our system. So I didn't exactly understand what role you are trying to attribute to consciousness in the context of changes in the dimensions of space and the dimension of time.
Eyal, surely there is a close connection between the forces of the universe and consciousness. After all, we live in a universe whose laws and conditions made possible the occurrence of our consciousness. So the connection is much closer than people usually think.
point…
What about the forces of the universe and human consciousness?
A lot from the point of view of man, but from the point of view of the universe?
Nadav, there is no separate time dimension, there is a time space of the entire universe.
And we are only aware as we move forward in time. It is related to consciousness in some deep way, rather than some other physical effect. That is, the engine that drives us here is the effect of consciousness, and not that the engine is in the dimension of time.
Beautiful and relevant article! Well done.
point
I think there can be confusion between the concept - "the dimension of time" and the concept of time respectively, it's like the difference between
"Space" for "location", so it can be said that it is possible to move back in time and that time flows backwards
It made me laugh. There is a kind of doubling of meaning here for the concept of "going back in time", which I understood only in the last paragraph (and then I read again from the beginning): not "going back in time", but "returning home from work in time" (for example).
And besides, it sounds like a very interesting topic for research.
commenter 25,
I have difficulty understanding. Sorry but I didn't understand if it was a joke and if so then at whose expense exactly. If you happen to belong to a different group than I belong to, then surely our humor also differs here and there. So if you want, you can explain what the poet meant for all those suffering from various kinds of understanding difficulties. Thanks.
If anyone has difficulty understanding, then the section I brought is a humorous section.
point,
I did not understand your answer. I asked if the loops described by the researcher are nothing more than a part of a black hole where, in my opinion, this phenomenon of bending the dimensions into a loop takes place. What were you trying to say with the wormholes?
I understood very well that he brought a quote, but for some reason the parenthetical comment seemed to me to be his, if I was wrong, sorry.
21, wormholes are structures found in the vicinity of black holes.
Question: If light does not escape from a black hole, then what is the difference between a black hole and what is described here? I mean, black guy, loops like that exist, don't they?
To commenter 19: read again what commenter 16 wrote and what you wrote ("...if I didn't understand..."). The way I see it, someone brought in his response number 16 something so ridiculous not to defend this public. And if, after all, it is someone who brought this quote as representing his opinion, then he is invited to speak for himself (which, as usual, people in this public do not know how to do by definition). And if it's going to be a troll then I say to 16: Get a life.
If you go back in time and kill your grandfather, before it gave birth to your father, that means you were never actually born, so you couldn't go back in time and kill your grandfather either…. This is the paradox. If I didn't understand, read the answer 10 more times until you understand.
Sparrow, we move within time forward into the future, otherwise we don't exist. Each person moves into the future at a constant speed.
Understand! Thanks.
From the "Olam Ketan" leaflet (a leaflet for young people in the religious community).
It is not clear what is the impediment to the possibility of returning in time.
The physical reasons for this prevention are not convincing - technology has improved, vehicles are faster. Theoretically there is no obstacle to going back in time and it still seems that we have not really come close to going back in time.
Quite a few people are puzzled by this fact.
mostly women.
Studies show that apparently the reason for not being able to go back in time really isn't physical, or in other words it's not an objective problem but a subjective one.
It depends on the person himself.
Some people are better able to get closer to the limit of repetition in time than others and that is a fact.
Whether these are genetic factors, character traits or perhaps a different education.
There are those who characterize the problematic nature of going back in time in general as an ethical problem.
The argument goes something like this: "If there is a person who can go back in time, everyone will be expected to be able to go back in time"
Mostly the women will watch.
(The truth is that I once heard that there is a philosophical argument against going back in time, a paradox, if you go back in time then you can kill your grandfather. But I never understood it. What are you stupid? Your grandfather??? Besides, what's the connection? And if you don't go back in time, you won't be able to kill your grandfather?)
You do not have to expect greatness from the return in time, what will change?
It's not really clear how going back in time would change our lives.
Maybe we were a little calmer.
Especially women.
Just yesterday when I came home from work my wife asked me angrily "Tell me - is it so hard to get back on time?".
Come on, it's fifteen minutes late
what's the story ?
There is a collaboration between the "Hidan" website and YNet, from time to time Avi Blizovsky's articles are published there, and sometimes their articles are published here. Understand?
http://www.ynet.co.il/articles/0,7340,L-3734046,00.html
It is simply a complete copy and recycling of the same article in YNET, by the same writer.
what's the point???
Bigumbum: They used to think like this,
Today it is believed that you will not be able to perform a paradox because it is in the past and therefore has already happened.
Look lost season five they did it quite elegantly,
For example, no matter what you do, you will not be able to prevent your birth.
Point - very true. And therefore: we return in time. Time does not go back, so the phrase "go back in time" is very accurate.
De J. V. I already read this article in 1994, 15 years ago
Commenter 7 Great link, what nostalgia 🙂
I have always said that things create consequences: if and I repeat if the thing is, was or will be and we move in time this thing will cause many paradoxes, and different theories to enter the essence of our lives such as the "chaos theory", the grandfather paradox, etc.
Therefore, I think it is better to "not eat the forbidden fruit" and leave the creations as they are.
post Scriptum
One of the interesting topics
The end of mr y highly recommend
.
http://www.youtube.com/watch?v=Kt-gWV71ukQ
.
Alex:
There is a program on National Geographic on the same subject.
There they expand more, they call it a "time machine".
It is broadcast during space week which they do once every few months but look at their website, you might be able to see it not only during space week.
Successfully
I also had a feeling of de Jaune 🙂
Point - I liked...
And it seems to me that I read this exact article on YNET about two months ago or something like that...
It is not at all clear to me what it means to go back in time, after all time does not flow forward or something like that.
From a physical point of view, it is more correct to say that all time and space already exist, and we simply flow within the time dimension.
Say Dana, your height is 163 cm
?
A very interesting topic. Too bad the article is too short. And there is also a feeling of the absence of a central theme and conceptual gaps.