Faster than the speed of light (pulling on a string)?

In summary, the conversation discusses the concept of using a string to connect two stars and pulling one end to communicate with the other. However, this idea is not feasible as the string has a certain amount of "stretchiness" and the communication occurs at the speed of sound, not faster than the speed of light. A link to a FAQ on this topic is provided to further explain the concept.
  • #1
Ozs
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If you were to connect a string from one star to another (assuming everything remains still), and then you were to pull one side of the string towards you, the other would be pulled immediately, thus the "communication" between the two edges is technically faster than the speed of light? Does this make sense?
 
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  • #2
Ozs said:
If you were to connect a string from one star to another (assuming everything remains still), and then you were to pull one side of the string towards you, the other would be pulled immediately, thus the "communication" between the two edges is technically faster than the speed of light? Does this make sense?
No, not immediately and not even at speed of light. It occurs at the speed of sound. You will find probably dozens of threads on PF here, which deal with this idea.
 
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  • #3
The other end wouldn't get pulled immediately, because the string has a certain amount of "stretchiness" to it. So, when you pull your end, the string will stretch a bit and that extension will travel down the string at approximately the speed of sound in the string.
 
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  • #4
Ozs said:
If you were to connect a string from one star to another (assuming everything remains still), and then you were to pull one side of the string towards you, the other would be pulled immediately, thus the "communication" between the two edges is technically faster than the speed of light? Does this make sense?

This type of question has been asked so many times, there is a FAQ on it:

https://www.physicsforums.com/insights/can-i-send-a-signal-faster-than-light-by-pushing-a-rigid-rod/

Zz.
 
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  • #5
The link to the FAQ should take care of the OP's question. Thread is closed.
 

1. Can anything travel faster than the speed of light?

No, according to Einstein's theory of relativity, the speed of light is the cosmic speed limit. Nothing can travel faster than the speed of light in a vacuum.

2. Is it possible to pull on a string faster than the speed of light?

No, the speed of light limit applies to all objects, including strings. No matter how much force is applied to the string, it cannot travel faster than the speed of light.

3. Can the speed of light be surpassed by manipulating space and time?

There is currently no known way to manipulate space and time to allow objects to travel faster than the speed of light. The laws of physics, as we understand them, do not allow for this type of manipulation.

4. Is there any evidence of anything traveling faster than the speed of light?

No, all experiments and observations to date have confirmed the theory of relativity and the speed of light limit. There is no evidence to suggest that anything has ever traveled faster than the speed of light.

5. What would happen if an object did travel faster than the speed of light?

If an object were to travel faster than the speed of light, it would violate the laws of physics as we know them. This could have unpredictable and potentially catastrophic consequences, such as causing a rupture in the fabric of space-time.

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