Edward Posted July 30, 2004 Posted July 30, 2004 I know that faster than light travel is impossible. Is there a way to send a signal over a distance of one light year in less than a year?
TheProphet Posted July 30, 2004 Posted July 30, 2004 Well we don't know that yet.. But it might be possible with corelating (Entageld) Atoms.. but the problem is still that u have too travel there first.... So that would still maybe bring a No too your answer!
Tesseract Posted July 30, 2004 Posted July 30, 2004 Well we don't know that yet.. But it might be possible with corelating (Entageld) Atoms.. but the problem is still that u have too travel there first.... So that would still maybe bring a No too your answer! In the Enterprise thread I remember hearing that communication through quantum entanglement would be instanteneous.
Cap'n Refsmmat Posted July 30, 2004 Posted July 30, 2004 http://www.scienceforums.net/forums/showpost.php?p=70186&postcount=18
Cap'n Refsmmat Posted July 30, 2004 Posted July 30, 2004 In the Enterprise thread I remember hearing that communication through quantum entanglement would be instanteneous. You have to get there to entangle them first.
Tesseract Posted July 30, 2004 Posted July 30, 2004 You have to get there to entangle them first. I know that.
ydoaPs Posted July 30, 2004 Posted July 30, 2004 entangle them in one place and then put one in the place you want to later communicate with
Tesseract Posted July 30, 2004 Posted July 30, 2004 entangle them in one place and then put one in the place you want to later communicate with But how do we put it there could teleportaion work?
ydoaPs Posted July 30, 2004 Posted July 30, 2004 how do you teleport things? use a rocket. then throw nukes out the back and detonate them. sure it will take a while to get there, but after that, information exchange will be instant.
Tesseract Posted July 30, 2004 Posted July 30, 2004 how do you teleport things? use a rocket. then throw nukes out the back and detonate them. sure it will take a while to get there, but after that, information exchange will be instant. I believe they teleported an atom a few weeks back.Im not saying we can teleport things now I was asking if it would work.
ydoaPs Posted July 30, 2004 Posted July 30, 2004 all they did was give one atom the properties of another. they did not teleport anything.
Tesseract Posted July 30, 2004 Posted July 30, 2004 all they did was give one atom the properties of another. they did not teleport anything. but isnt that the idea of quantum teleportation.
pulkit Posted July 31, 2004 Posted July 31, 2004 how do you teleport things? use a rocket. then throw nukes out the back and detonate them. sure it will take a while to get there, but after that, information exchange will be instant. Given that the original post asked that if you could send a message a distance of 1 light year in less than a year. This method is quite useless because you basically need some sort of an arrangement at the destination and you can't just send a message and automatically recieve it.
Edward Posted July 31, 2004 Author Posted July 31, 2004 I just wannt to know if it is possible yes trhere can be a person on each end. P.S. Does anyone belive that the methodes of communication used in the enders game novels could work?
[Tycho?] Posted July 31, 2004 Posted July 31, 2004 Is there a way to send a signal over a distance of one light year in less than a year? I know that faster than light travel is impossible. /QUOTE]
Cap'n Refsmmat Posted August 1, 2004 Posted August 1, 2004 Given that the original post asked that if you could send a message a distance of 1 light year in less than a year. This method is quite useless because you basically need some sort of an arrangement at the destination and you can't just send a message and automatically recieve it. What? Are you saying the quantum entanglement won't work or will work? If you got there, yes, information exchange is instantaneous, no matter the distance.
ydoaPs Posted August 1, 2004 Posted August 1, 2004 P.S. Does anyone belive that the methodes of communication used in the enders game novels could work? how is it supposed to work?
pulkit Posted August 1, 2004 Posted August 1, 2004 Even if you could do this entanglement instantaneously, woud it be possible to encode and decode messages using it ? Even that seems quite a big problem
Cap'n Refsmmat Posted August 1, 2004 Posted August 1, 2004 Yes. You just have to modify the spin of the atoms, and the corresponding one light years away will change instantaneously. You just monitor the spin of the atoms, taking a change one direction to be 0, another 1.
pulkit Posted August 1, 2004 Posted August 1, 2004 Given current technology, is it possible to determine the direction of spin of a single atom ?
swansont Posted August 1, 2004 Posted August 1, 2004 Yes. You just have to modify the spin of the atoms, and the corresponding one light years away will change instantaneously. You just monitor the spin of the atoms, taking a change one direction to be 0, another 1. It's considerably more complicated than that. You can't "monitor" the spin without affecting the outcome. If the spins of the the atoms that Alice and Bob have are entangled, and Alice knows the spin of A, then Bob's spin will have a definite value. But what happens if Bob measures first? Then the A spin will be set by the measurement of B. AFAIK, once you make the measurement, the entanglement is done. You aren't changing the spin to send information, you are encoding the spin.
pulkit Posted August 1, 2004 Posted August 1, 2004 Is it even possible to somehow encode a messge then ?
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