faster than light communication? My thoughts on my last bus ride...

Mucman

Diamond Member
Oct 10, 1999
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Here is the scenario... You have two people that are a light-year apart (the distance light travels in one year). If these two people were to communicate using very powerful flashlights that they could see from that sort of distance; They would have a lag of 1 year between communications.

Now imagine the same two people holding a string one light year long. First off, let's say that such a string exists and is light enough for two people to keep taught for the one light year distance. Say person number 1 tugs on the string, wouldn't the person on the other end feel the tug at the same time? Another example would be to have a cylinder with a rod inside (well lubricated so friction is ~0.0) and that it is 1 light year long. If someone pushs on the rod inside the cylinder would the person on the other end see the affects right away? Could a faster than light communication device be built using these concepts? Does this correlate with quantum theory in any way?

Anyone care to comment?
 

Ornery

Lifer
Oct 9, 1999
20,022
17
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Hey, I love it!

Essentially, the string or rod connects the two, so they're no longer separated by a light year.

Quantum physics blows me away, though!
 

AnthraX101

Senior member
Oct 7, 2001
771
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Interesting idea.

However, the metal itself can not go faster then the speed of light. The electromagnetic bonds will transfer your "push" on to the other atoms at the speed of light, or more likely, significantly slower. You might have to figure in the speed of sound in the material some how, I am not a materials guy :) . And the elasticity of the material will make a difference too.

AnthraX101
 

Viper GTS

Lifer
Oct 13, 1999
38,107
433
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You would have to be able to accelerate the mass of the object instantaneously to support that theory, which is impossible.

Viper GTS
 

Mucman

Diamond Member
Oct 10, 1999
7,246
1
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Originally posted by: Viper GTS
You would have to be able to accelerate the mass of the object instantaneously to support that theory, which is impossible.

Viper GTS

Gotcha... I don't have a very good physics background, but I figured there would be some sort of modulus for that. Especially considering a piece of material one light year long...

Haircut - That link makes my head hurt :)

I guess I am not the first to think of this idea then :p