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Message 1296167 - Posted: 17 Oct 2012, 13:58:43 UTC
Last modified: 17 Oct 2012, 13:58:57 UTC

One to make your head hurt and go cross-eyed:


The Register: Is lightspeed really a limit?

Solving super-luminal Special Relativity without breaking Einstein...

... I freely admit that I was gasping to keep up during this interview. Strike that: I was failing to keep up. Mathematics is nowhere near as amenable to the metaphoric explanations that make physics sometimes accessible to mere mortals...



All very plausible apart from the minor details of (a) getting there, and (b) tripping over the mathematical singularity...


Keep searchin',
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Message 1296191 - Posted: 17 Oct 2012, 16:06:42 UTC

Sounds like mathematical nonsense. But an entertaining story at the same time!

John.

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Message 1296219 - Posted: 17 Oct 2012, 17:13:40 UTC
Last modified: 17 Oct 2012, 17:15:00 UTC

I have always believed that things can travel faster than light, I just don't have the scientific knowledge to prove it. Until someone else does it is just simply my opinion which I cannot back up. I can happily live with that :-)

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Message 1296266 - Posted: 17 Oct 2012, 17:59:03 UTC - in response to Message 1296219.

Maybe we need Scotty to work on them engines..... & beam us up occasionally.
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Message 1296278 - Posted: 17 Oct 2012, 18:14:26 UTC

I believe that information can travel faster than light, as in the Einstein-Podolsky-Rosen paradox, but nothing having mass/energy.
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Message 1296282 - Posted: 17 Oct 2012, 18:16:33 UTC - in response to Message 1296278.

But isn't the only way information can travel is on a medium, thus it has mass/energy and is also limited to the speed of light?

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Message 1296397 - Posted: 17 Oct 2012, 23:43:13 UTC

Cherenkov radiation could well be a good teaser onto faster things...


It's all relative...

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Message 1296405 - Posted: 18 Oct 2012, 0:14:43 UTC

Maybe Kpax had the answer and thoughts can span the galaxy instantaniously.
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Message 1296455 - Posted: 18 Oct 2012, 4:32:49 UTC - in response to Message 1296282.

But isn't the only way information can travel is on a medium, thus it has mass/energy and is also limited to the speed of light?

Yes, but I was talking about entangled particles,
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Message 1296494 - Posted: 18 Oct 2012, 10:28:12 UTC - in response to Message 1296455.

Tullio

See if you can transmit a message using entangled particles. I suggest that you could only tell the state of a faraway particle and not influence that state to send information. In other words you would not lessen the uncertainty of the information stream--hence no message and infinite signal to noise ratio.

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Message 1296560 - Posted: 18 Oct 2012, 15:44:54 UTC - in response to Message 1296494.

Tullio

See if you can transmit a message using entangled particles. I suggest that you could only tell the state of a faraway particle and not influence that state to send information. In other words you would not lessen the uncertainty of the information stream--hence no message and infinite signal to noise ratio.

I am only trying to think. Suppose you measure qubit A and determine if it is zero or one. Would not the observer of qubit B, distant a million km, receive an information?

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Message 1296565 - Posted: 18 Oct 2012, 15:51:38 UTC

It's all relative...

My Uncle Bertie had a few ideas in his time ....

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Message 1296681 - Posted: 18 Oct 2012, 20:12:58 UTC - in response to Message 1296560.
Last modified: 18 Oct 2012, 20:14:33 UTC

I am only trying to think. Suppose you measure qubit A and determine if it is zero or one. Would not the observer of qubit B, distant a million km, receive an information?


He would receive the information any time that he looked at the spin state of the remote particle. He could not control the state and send the entangled particle across the universe faster the speed of light. I claim the state is determined--Just as Schroedinger's cat-- all you had to do was look. I don't believe the looking caused the state--I guess I need to revisit the two-slit experiment once again.

I know that a Qubit has three states and may be a more efficient coding scheme than binary. I still don't see the advantage of a quantum computer this yet--still looking for an explanation.

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Message 1296955 - Posted: 19 Oct 2012, 18:43:58 UTC - in response to Message 1296681.


I know that a Qubit has three states and may be a more efficient coding scheme than binary. I still don't see the advantage of a quantum computer this yet--still looking for an explanation.

No. a qubit has two states, but 2 qubits have 4 states, 3 qubits 8 states and n qubits 2expn possible states. So the state space expands very rapidly. The people from D-Wave, a Canadian firm which managed the AQUA@home BOINC project and sold a so called "quantum computer" to Lockheed-Martin for a hundred million dollars, then disappearing from BOINC, have recently published a paper in a "Nature" publication titled "Finding low-energy conformations of lattice protein models by quantum annealing".
They have used a so called "quantum computer" built by them using up to 81 superconducting quantum bits.
I have published an article on this subject on the Italian edition of the MIT Technology Review in 1996, together witha friend. This is a very lively field of research.
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Message 1296994 - Posted: 19 Oct 2012, 20:58:37 UTC - in response to Message 1296219.

I have always believed that things can travel faster than light, I just don't have the scientific knowledge to prove it. Until someone else does it is just simply my opinion which I cannot back up. I can happily live with that :-)

Nothing wrong with that Chris for I'm darn certain that there are things that
can travel faster too. There has been some from the science fraternity that
have stated that, "At one time past, light travelled at a faster speed than
it does currently today". There could be something out there that sets the
speed of light, at any time, hence the speed is a function of this "something".

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Message 1297157 - Posted: 20 Oct 2012, 12:12:25 UTC

There has been some from the science fraternity that have stated that, "At one time past, light travelled at a faster speed than it does currently today"

Now that is a very interesting comment Nick. But it still seems to propose that there is a finite speed of light, at whatever level, for whatever reason, as you allude to here.

There could be something out there that sets the speed of light, at any time, hence the speed is a function of this "something".

Einstein's theories say basically that, as an object approaches the speed of light it's mass becomes infinite, therefore, it will take an infinite amount of energy to move it any faster. At present we cannot disprove that theory, but it is possible that the LHC might do in the future.

Why do I believe that things can travel faster than light? very simple. As you may know, I am an advocate of previous ET earth visitations, probably 11-13,000 BC as the most recent, and maybe older as well. To make that a viable probability, given our current knowledge of habitable exo-planets, faster than light travel would appear to be necessary.

QED (Quite Easily dopy!)




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Message 1297258 - Posted: 20 Oct 2012, 17:47:56 UTC

What happens then if we turn all this on it's head!!
At the point of creation of the universe no light had yet to be created
could all bodies have moved at infinite speed for a short period of time.
Hence to travel at speeds in excess of that of the speed of light we would
need to develop a system that removes or cancels the effect of light in
Einstein's equation???....Chris, have you still got your old Meccano set around??


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Message 1297691 - Posted: 21 Oct 2012, 19:14:41 UTC

Chris, have you still got your old Meccano set around??

Sadly no, and I had a Set 4A motorised one as well. My parents gave it away ......

Sniff sniff

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Message 1297907 - Posted: 22 Oct 2012, 16:22:02 UTC - in response to Message 1297691.

Chris, have you still got your old Meccano set around??

Sadly no, and I had a Set 4A motorised one as well. My parents gave it away ......

Sniff sniff

That's torn it then.... Lego's too flimsy can't mount an anti-light combative
motor on that!


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Message 1299801 - Posted: 28 Oct 2012, 15:44:32 UTC

I think I have a very good question, they claim the universe is 13.7 billion years old. But surly we aren't sitting right smack in the middle so how do they derive 13.7 vs maybe 27.4 or something older.

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Message boards : Science (non-SETI) : Beyond Lightspeed

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