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    By: yakz This person is cool! x Show Full Post
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    If you had two gears spaced apart by multiple light-years, and a taut chain connecting them, couldn't you communicate faster than the speed of light?
    Dec 31, 2010 4:50pm PST
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    If you had two gears spaced apart by multiple light-years, and a taut chain connecting them, couldn't you... : yakzThis person is cool!

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    • Short answer: no. Long answer: nooooooooooooooooooooooooooooooooooooo. : action roommate
    • Do you think physical changes propagate faster than light? Tension? : sgtsanity
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      No, because you'd be sending a mechanical wave over the chain. (I assume you'd hit it to vibrate the cha... : Volatus32x
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        I was thinking you'd turn the gear. The chain being taut, the gear at the other end can't turn without co... : yakzThis person is cool!
        • Over such vast distance the gear on one end would have to turn for a while (years and years) before the o... : Volatus32x
    • No, and what are the gears for anyway? : thecrayThis person is cool!
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      You're effectively limited by the speed of sound in the medium that the chain is made of (which is much h... : Volatris
      • Woah, your name made me do a double take : Volatus32x
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      Whoever told you that was pulling your chain. : Marrbe
      • Get your ass in gear, Marrbe. : greasyjohn
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      Slight Hijack : The only way I've heard of recently to communicate at a speed faster than light was a st... : Volatus32x
      • It might be this, sounds about right. http://arxiv.org/abs/cond-mat/9907133 : Volatus32x
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        lol They talk about this in mass effect. It's call quantum teleportation or something like that. It lets ... : GoldfishInAJarOfPickles
        • Yeah, this was what I was thinking of but I know there is hard science behind it and I can't find the art... : Volatus32x
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        it's called quantum entanglement : electrolyThis person is cool!
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          Thank you! : Volatus32x
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            And you can't use it to communicate faster than light, because there's no way to discern random spins fro... : MagicWishMonkey
            • I don't recall the whole thing but I think the "Ah ha" for the scientists was how the random spins and vi... : Volatus32x
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      I don't think building such a device is possible. You would need something like infinite tension in the ... : aliasThis person is cool!
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        He's got the right idea, though. It just can't be a cable or chain that you could physically hold or man... : Volatus32x
        • Well, I really meant a chain with direct contact between every link, and between each link in contact wit... : yakzThis person is cool!
    • Nope. : TaintedSyringe