Linked Questions

2
votes
3answers
242 views

Hypothetically what would happen in this situation? [duplicate]

Would the speed of 'push' be equal to the speed of sound?
0
votes
1answer
174 views

Send a signal from Earth to a planet billion light years away instantly [duplicate]

If light was infinitely fast, we could just send a light signal from Earth to the planet. But I was wondering, if we made a perfectly non-elastic rope as long as the distance between earth and the far-...
1
vote
1answer
386 views

Why doesn't pushing balls in a tube propagate the movement faster than the SoL? [duplicate]

Possible Duplicate: Is it possible for information to be transmitted faster than light by using a rigid pole? On one episode of QI they asked the question, "How fast do electrons move travelling ...
0
votes
1answer
265 views

What happens when I move a very long bar? [duplicate]

Possible Duplicate: Faster than light information Hey there, I just want to make clear that I'm new here and I don't know whether this is the right place to ask such a hypothetical question. So ...
-1
votes
1answer
201 views

Can we travel faster than the speed of light? [duplicate]

So my question is completely a theoritical question. For example i have a stick made of the strongest material and lightest material and its lenght is as long as the solar system's diameter. The end ...
0
votes
1answer
299 views

Can a pushed plank beat light and break the laws of physics? [duplicate]

Imagine you are one lightyear away from a photon sensitive (light sensitive) switch. So it is obvious that light would take one year to reach to the switch. Now I have a one lightyear long plank. I ...
0
votes
1answer
145 views

Information faster than light? [duplicate]

Imagine that you have two typewriters on the other side of the galaxy. Their typebars are connected by ropes (stretched to the maximum), so anything you type will instantly appear at the second ...
2
votes
1answer
93 views

Rope with no slack tied around the world [duplicate]

Imagine a "rope" (for want of a better word) is wrapped all the way around the Earth, to the point that you can hold both ends. There is no slack on the rope, i.e. it doesn't stretch. It also isn't ...
0
votes
2answers
150 views

sending information over a wire--mechanically [duplicate]

Possible Duplicate: Is it possible for information to be transmitted faster than light? I've thought about this since I was a little kid. I know it isn't exactly feasible, but it still bothers me....
-2
votes
1answer
150 views

Can information be sent faster than speed of light [duplicate]

I just had this idea one day and I decided upon a thought experiment to verify it. Imagine 2 people A & B sitting on two sides of a pipe which is stretched to a length of 3x10^8 m. The pipe is ...
1
vote
1answer
89 views

Where is the mistake in the following rationament [duplicate]

Well... kind of hard to translate in English so bare with me :). Let's consider a wheel that spins in the void. Each point of the wheel has the speed $v = ω r$. That means that for any $ω$, there is ...
0
votes
2answers
105 views

Does my interstellar pole thought experiment violate casualty? [duplicate]

I have heard that it is impossible to send a signal faster than light. However, what if I had a long (4.5 light years) pole and placed one end on Earth and the another end around Proxima Centauri. If ...
2
votes
0answers
172 views

If you make a steel rod from here to Alpha Centauri and move it, will the movement appear there instantly? [duplicate]

Possible Duplicate: Is it possible for information to be transmitted faster than light? imagine this theoretical situation: You have make an extremely long piece of steel (or anything really) one ...
0
votes
1answer
102 views

Gear Theory — Entanglement — Spooky action at a distance explained? [duplicate]

Nothing can travel faster than the speed of light. Not even an electrical signal. Entanglement seems to violate this. But, does it? Imagine 100 gears lined up in sequence all the way across a ...
-1
votes
1answer
61 views

What is the speed of Pushing/Pulling? [duplicate]

If there was a huge rod the length of a light-year in space and someone pulled one end of it, when would the other end move?

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