Images that are carried on light rays and move at the speed of light lose their sharpness after a short distance - a phenomenon known as refraction (diffraction). Technion and Weizmann Institute researchers have found a method to eliminate this phenomenon with a special medium of hot atoms
Technion and Weizmann Institute researchers have found a method to eliminate the phenomenon of diffraction (refraction) that causes images that are carried on light rays and advance at the speed of light - to lose their sharpness. Their work was recently published in the scientific journal Physical Review Letters.
"We are in the middle of the information revolution, and a lot of effort is being invested in improving technologies for processing, transmitting and saving information," the researchers explain. "One of the fascinating fields of research is the optical processing of information, in which the researchers try to develop engineering and physical systems that process optical information without converting it to electronic-digital information. These systems are expected to dramatically speed up the information processing processes. In particular, there is great interest in the transmission and optical processing of images.
One of the difficulties in applying optical systems for image processing is the blurring caused to the images during their movement in open space, due to the phenomenon of refraction (diffraction). The faster the blurring, the more information will be stored in the image and the higher its resolution. In vision systems, such as cameras or eyes, lenses are used to restore the original image, but this restoration depends on the quality and size of the lens and is not feasible in many cases."
In a recently published work, Technion researchers, Ph.D. student Ofer Furstenberg, Dr. Moshe Shuker and Professor Amiram Ron and Professor Nir Dodson from the Weizmann Institute present a special atomic medium in which optical refraction is completely eliminated. The medium, known as "induced transparency medium", contains a thin gas of atoms at room temperature. In such a medium, the image can be made to move at a speed 100,000 times smaller than the speed of light, and the thermal motion of the atoms can be used to "drag" or "push" the light that travels through them. The researchers discovered that by fine-tuning the interaction between the atoms and the light, the atoms can be made to push the refracted light rays back to their original path. Any image that enters such a medium will move within it and come out on the other side without blurring.
Many future applications can take advantage of this method. Matching two images by optical means enables fast and automatic recognition of patterns, such as objects or people, within photographs. For this purpose, the movement of the images must be slowed down and the blurring caused by refraction must be prevented. Also, with this means it is possible to capture light rays in a small area, inside an atomic gas. For optical microscopes, the phenomenon of refraction is one of the main limitations, and its prevention will allow the improvement of microscopes under certain conditions.
31 תגובות
Avitar I don't see anywhere in the article the researchers said that the brightness blurs the image... maybe you can quote...
And if you refer to the picture then it says: "Light in the open space" which is very different from empty.
Avitar, who is Gilad, who is not Shahar, who is Ron, who is Yael, who is Abri, who is Tzachi, who is Hami, who is Yaron, who is Amir, who is Zeev, who is Doron:
I'm turning to each of you and demanding that you give me the million dollars you promised.
If you keep talking nonsense I will ask Shahar to cast a spell on you so you can no longer comment here.
Pine
I hope you don't call yourself a thinking scientist, because you've definitely proven you're not...
Hahaha, Avitar, I hope people like you don't call themselves a "thinking scientist". Because you are definitely none of them. Not a scientist, and doubtless thinking…
I hope you do some brain exercise, you need it.
And it is better that you spare us your presence and do not return to our site, this is a scientific site for people who think differently than you
Good.
I'm going to the gym now.
When I return, I expect to see here details about the transfer of the money that Avitar/Yeron/La Shachar/Yael/whatever name he chooses to start a new page after his stupidity has been proven in the previous name - will transfer to me in continuation of his commitment and also due to his delusion of billions.
Do you see how money corrupts?
The man is just starting to fantasize about the millions he will receive and he already thinks he can ignore his obligations and not even answer the people he promised to give a million dollars to.
Well?! Yaron! I'm waiting!
Time is money, as you know, and waiting for a million dollars is worth a lot of money even in today's interest rates.
I know that with the billions you're going to get it doesn't seem like much to you, but try to remember the times when you were just a person and even quite an idiot!
Because when I talk to people like you and I see how smart I am compared to them, it's a good feeling that's worth the time.
Tell me, Avitar:
Why do you keep wasting time just to agree with me that you are wasting time?
By the way: since you are going to be a millionaire then you really shouldn't have a problem fulfilling your commitment and giving me the million dollars you said you would give.
Michael
Perhaps you will understand that there should be no blurring and no "measure" of blurring in a vacuum because the light rays do not meet any particle that splits them. If the blur has to be in the gas, it is interesting that according to the researchers' claim, the random gas molecules miraculously focus the light rays exactly so that we get a sharp image. The probability of this happening tends to zero. And if you don't understand even that, then it's really a shame for the discussion.
Oops:
I posted this to the wrong discussion.
I will also send in the right place.
Yaron equals Avitar equals Abri equals Yael, not equal to Shahar nor equal to anything
The fact that Shahar isn't going to take a million dollars is proof enough for any reasonable person.
I know for you it's not good enough but I said it's only good for anyone with a mind.
Evyatar:
The area.
Continue to fantasize that the researchers are wrong.
Although you don't know the degree of blur caused, but that doesn't stop you from saying that it was actually such that it should have hidden everything from our eyes - including stars.
How should I treat this kind of "all or nothing" claim?
Of course there is no way to refer to it, so I will stop.
You can, of course, continue to hold your opinion and develop the technologies for which the new solution is intended to be used - without him.
This way you will save a lot of money in the application, defeat all your competitors and be richer than Bill Gates.
run! Shame on you for wasting even a minute on an idle conversation with a moron like me.
Michael
If what you say is true then how do we manage to see that there is anything extraterrestrial at all? And since we do see that the researchers are necessarily wrong.
Evyatar:
If what you say is true then how come we can't just see if there is life there?
If this is true, then how is it that we can see quite sharp images of outer space taken by the Hubble telescope and others? After all, they should be completely blurred, because they (their light) pass through a vacuum and not through a gas at room temperature. It is true that in space there are Also nebulae of gas and other particles, but most of the space is empty, (which according to the researchers should blur the image, and even more so if it is billions of light years away!!)
Michael R. Thanks for the explanation
monument:
Your calculation is correct but if you take into account the possibility that the image can contain a huge amount of data just to upload it serially on the communication line or on the bass takes a very long time, you see that this is an important progress.
Of course, its importance increases as the amount of data in the image is large and the distance is small (for example inside the computer itself)
I admit that I am very weak in math, so please explain to me
Write a speed less than one hundred thousandths of the speed of light, it comes out (if I'm not mistaken here) 3 km per second?
Pretty slow isn't it?
Thanks for the explanation, and the correction 🙂
By the way, we write "tawach" (the substance that mediates) and not "range" (distance).
http://en.wikipedia.org/wiki/Diffraction
http://en.wikipedia.org/wiki/Dispersion
About:
That is, dispersion is one of the reasons for blurring the image.
In the article itself, deformation is actually mentioned as the disturbing factor that was overcome.
I mean, I'll say it in other words and you tell me if I'm wrong at all:
They managed to produce a range that does not cause dispersal?…
A is A:
This is, presumably, to demonstrate how normal motion at the speed of light blurs the image until Smiley can look like a panda.
Images are indeed information, but from an applied point of view, this is an interpretation of optical information that we want to handle, and therefore there is an interest in its accurate transfer, on the one hand, and fast on the other hand.
Naturally, everything transmitted by light moves at the speed of light (in the medium through which it travels) - whether it is transmitted intentionally or not.
For example - the screen image in front of your eyes reaches your eyes at the speed of light. This is not a technical concept but a correct description of reality.
I don't understand the attached drawing... how does a panda come out of a smiley?
i.e. pictures = information (correct me if I'm wrong)
information package.
Now what kind of internet does a packet of information have to lose part of it?..
Is this streaming of coded information in the form of an optical image?... and loss of sharpness = adding noise to the information?
I just have a problem with the concept of "images moving at the speed of light"…. I understand that this is apparently the professional term but still..
For the unknown:
It is not in the interest of the photo but of whoever wants to send it.
To the anonymous user - why do images have an interest in moving at a speed close to the speed of light? Would you be ready to watch a live football game when the pictures arrive after half an hour?
I did not understand anything…
What interest does a picture have in moving at speeds close to the speed of light?... What pictures are you talking about?..