Is it true scientists were able to stop a beam of light by using extreme cold?
115426
Yes, yes, yes, yes..!!! Scientists have stopped light.\n\nThe details of when, where and how are here ---\nhttp://science.nasa.gov/headlines/y2002/27Mar_stoplight.htm\n\nhttp://physicsweb.org/articles/world/14/9/8
1187091
When you say intense, How intense? I worked on superconductor magnet before and I don't think there is any effect to human...and i believe that that is the strongest magnet that we can made in our technology today. But I am thinking of a magnet which is stronger like the magnetic field of a neutron star.\nI would guess that in some degree, the magnet will cause physical problem since there are irons in our blood or other minute amount of minerals in our body.\n\nIf the magnetic field is targeted in a single point in space?\nIf that is possible, Nothing will happen because it is known that the force of magnetism is short distance.\n\nYou cannot concentrate the magnetic field like laser, the area of force will be related to its strength. The stronger, the larger area of force due to more magnetic lines.\n\nMagnetism is a kind of force and it will not turn to visible light. Light is made of wave particle duality and is totally different from magnetic lines of force.
829997
Perhaps a light wouldnt work under the extreme conditions of a freezer :D
701812
hehe that's funny.\n\nBut I would not want to be cryogenically frozen! :)
913177
Yes there are, and the best (imho) explanations in plain, non-technical language are in a book by Richard Feynmann titled  "QED The strange theory of light and matter".\nWhen you first read what actually happens when light bounces off a mirror it's mind blowing. There are equally good explanations of why a simple lens works, etc.
977539
On the contrary, a light beam would merely percieve that it travelled instantly inbetween origin and destination. Space would be warped to Zero distance in the direction of travel, not Zero space. I know it seems like a sleight-of-hand trick with the mathematics, but the distinction is important.
337121
yes.\nSome very clever people managed to teletransport a photon of light from one side of a lab to the other. But dont get your hopes up being able to transport people between starships and the planet they orbit.....
353533
If you could find a transition between an inverted state and a ground state of 1 joule, you could probably make a laser of that frequency. At this point, hard gamma rays are the limit we have done.
8361
The coldest temperature ever produced was 100 pK during an experiment on nuclear magnetic ordering in the Helsinki University of Technology's Low Temperature Lab[3].
322915
No.  A laser beam, for example, can pass right through another laser beam as if it weren't there.  Light does not block other light.  You can easily see through a beam of light, unless there is a lot of particles in the air which scatter the light and dazzle you.  When you look at something you don't normally see the light in the room crossing your line of sight, only the light which goes directly into your eyes.\n\nThose laser beams you see in space in the movies?  That's just Hollywood.  In reality you couldn't see the beam from the side - light is completely transparent.
217437
Not in the same way that light reflects. This is an important topic in X-Ray telescopes. See below!
833030
Actually, a light beam is invisible as well, unless it's shined directly into our eyes.  A light beam is visible in a dusty room, and a magnetic field is also visible when loose iron filings are present.  The reason why magnetic fields seem invisible to us is merely because our eyes aren't tuned to pick up magnetic fields, but that does not say that it's impossible to devise an artificial eye that can "see" such magnetic fields.
711263
It is impossible in principle to reach absolute zero.  Temperatures of microkelvins have been achieved, but to actually reach absolute zero would require something colder to act as a heat sink, and of course that is impossible.
1183282
NO.\n\nIt is only an effect of a cloud being illuminated by a distant lightning flash.
930628
I think they're looking for "wave" too.\n\nBut the answer could also be "charged."  The electron beam is focused using magnets;  this can be done because a moving charged particle has a magnetic field, and thus can be manipulated by external magnetic fields.
36596
That's a big "if", that's some car!\n\nOK, I'll go there:\n\nThe photons in the forward direction could not escape thre filaments so they'd build up there, but the filaments would not blow because they'd be infinite mass.  Boring answer, really.  Nothing would happen.
374885
The answer is no. Isaac Newton had assumed that light was made up of numerous small particles, in order to explain features such as its ability to travel in straight lines and reflect off surfaces. This theory was known to have its problems; although it explained reflection well, its explanation of refraction and diffraction was less pleasing. In order to explain refraction, in fact, Newton's Opticks (1704) postulated an "Aethereal Medium" transmitting vibrations faster than light, by which light (when overtaken) is put into "Fits of easy Reflexion and easy Transmission" (causing refraction and diffraction). Newton believed that these vibrations were related to things like heat radiation, saying:\n\nIs not the Heat of the warm Room convey'd through the Vacuum by the Vibrations of a much subtiler Medium than Air, which after the Air was drawn out remained in the Vacuum? And is not this Medium the same with that Medium by which Light is refracted and reflected, and by whose Vibrations Light communicates Heat to Bodies, and is put into Fits of easy Reflexion and easy Transmission? \nThe modern understanding, of course, is that heat radiation is light, but Newton considered them two different phenomena (believing heat vibrations to be excited "when a Ray of Light falls upon the Surface of any pellucid Body"). He wrote that "I do not know what this Aether is", but that if it consists of particles then they must be "exceedingly smaller than those of Air, or even than those of Light: The exceeding smallness of its Particles may contribute to the greatness of the force by which those Particles may recede from one another, and thereby make that Medium exceedingly more rare and elastick than Air, and by consequence exceedingly less able to resist the motions of Projectiles, and exceedingly more able to press upon gross Bodies, by endeavoring to expand itself."