Superliminal communication through quantum entanglement

[bascule]

Ah. You chose, "by definition."

"c" is the speed of light. A photon is light. therefore the speed of any photon is always c, no matter what material it is passing through.

Precisely.

When you compute the value of "c" as a decimal value for a specific but well selected photon, can that computed decimal value of "c" be different from other photons that may be traveling through other medium? If so, by how much?

The medium is irrelevant as photons can only travel through a vacuum. When photons pass through matter they are absorbed and reemitted, and it's this process that reduced light's apparent speed when travelling through a medium. In the interstitial vacuum between atoms through which the photons travel, they are always going c.

Is the speed of light constant?

What is the decimal value of c?

c is defined as exactly 299792458 m/s, as the Treaty of Metre defines the meter as 1/299792458th of the distance light travels in a second. Subsequent revisions to the speed of light would alter the length of the meter unless it was decided that the meter itself be redefined.

[TheCotMan]

c is defined as exactly 299792458 m/s, as the Treaty of Metre defines the meter as 1/299792458th of the distance light travels in a second. Subsequent revisions to the speed of light would alter the length of the meter unless it was decided that the meter itself be redefined.

Looks like where I was going has been explained.

Excellent. Now onto something that is "related"::

So, you have the speed of light (constant) specified in meters per second. And the meter is defined by the distance a particular frequency of light can travel in a specific time. Combine this with photons travel at c by definitions, and I see lots of INCEST! I've always had a hunch physicist were perverts.

Now here is an amusing item... If a minute is defined as precisely 60 seconds, and an hour is defined as precisely 60 minutes, and a day is defined as precisely 24 hours, then what happens when the radius of the earth shrinks without loss of mass, angular momentum is conserved, and the earth starts spinning faster?

Next thing you'll be telling me that the second is defined as the length of time required for a particular wavelength of light to travel one meter. ;-)

INCEST! INCEST!

[bascule]

Next thing you'll be telling me that the second is defined as the length of time required for a particular wavelength of light to travel one meter. ;-)

INCEST! INCEST!

Oh, the real truth is far more fucked up than that.

A second is defined as the length of time it takes cesium to vibrate 9192631770 times.

Now, the thing about c is that it's valid for every reference frame. If you are headed 15 kph in the direction of a photon, your velocity relative to the photon isn't c + 15kph. It's c.

Why? Time dilation. If you have subject S headed towards a photon and S' the stationary observer, then the period of time it takes cesium to vibrate 9192631770 times for S is actually longer than the length of times it takes cesium to vibrate 9192631770 times for S'. Because time is moving slower for S, the distance light can travel in a second for S changes relative to S', because S has a different idea of how long a 'second' is. So relative to S light continues to appear to be going c because time dilation cancels out any changes to the photon's apparent velocity.

[stringslayer]

Brain Pain

I suddenly feel the urge to go back to school, or maybe go grab a tylenol...
Nevertheless, this is very interesting and I am doing my best in an attempt to learn something :-)

[TheCotMan]

I suddenly feel the urge to go back to school, or maybe go grab a tylenol...
Nevertheless, this is very interesting and I am doing my best in an attempt to learn something :-)

You should look through some of Bascule's other threads here. Some of them are interesting and have lead to fun discussions too.

On the other hand, some have lead nowhere. ]:>
(Partly due to topic and population of the forums.)

[dYn4mic]

The world needs more people like Bascule and TheCotMan....
If either of you guys spot me at the con, or I spot you... I'm buying you both a beer.
(I should be wearing a forum badge made by childern in the country of twinvega)

[bascule]

Thanks, and...

(Note: The title of this thread should be 'superluminal,' not 'superliminal' communication. An unfortunate typo which I just spotted...)

[bascule]

Bascule: I can best think of C as being relative to the electron. That means that the total speed of the photon is C plus the speed of the electron. Would this be correct?

Time relative to the electron is slowed by its own movement. Thus its own "second" becomes longer, and therefore light travels a greater distance in the same unit time.

[TheCotMan]

The world needs more people like Bascule and TheCotMan....
If either of you guys spot me at the con, or I spot you... I'm buying you both a beer.
(I should be wearing a forum badge made by childern in the country of twinvega)

Thanks for the kind words and offer. :-)

I think the *real* reason for beer is to see what Bascule and I might say if we were under the influence. ;-)

"What's your favorite flavor of quark?"
"I'm strange; I like Vanilla because it makes me feel charmed. It picks me up when I am down, and brings me to the top when I hit the bottom."

hehehhehe :-D

[bascule]

Strange quarks are no laughing matter

[TheCotMan]

Strange quarks are no laughing matter

Bah. Similar worries existed before the first atomic tests.
"Oh no! What happens if the chain reaction never ends?!"
If we assume that we are not alone, or other advanced organisms preceeded us and tried similar experiments, the fact the universe is still here speaks volumes on its stability and such risks for unending chain reactions.

Faster than the speed of sound? No. That will kill you.

'Oh don't sail to India that way! You'll fall of 'teh' edgs of the ocean or get attacked by sea-going vorpal bunnies or get eaten by swallows carrying coconuts!"

Besides... if we had such a problem, we could just turn the temperature of the system to negative one degrees Kelvin-- yeah, that would do it.. ;-)

Strange are just not stable enough.

Also consider this... examine the heavy metals we have in our planet and consider their creation in ancient stars which have long since passed. There would have been a lot more "pressure and temperature" in the hearts of these dying suns where tons of heavy metals were forged, and these did not lead to chain reactions... (or did they?)

Maybe Supernova are triggered by something like this. Maybe the gravity from super massive collapsing stars provide enough pressure and temperature for strangelets? And maybe monkeys might fly out of my butt!

[This rant was not directed at you Bascule, but those in the article who are providing FUD.]

[Voltage Spike]

If we assume that we are not alone, or other advanced organisms preceeded us and tried similar experiments, the fact the universe is still here speaks volumes on its stability and such risks for unending chain reactions.

Perhaps the fact that you have (presumably) never met these beings speaks volumes.

[TheCotMan]

Perhaps the fact that you have (presumably) never met these beings speaks volumes.

Heh-heh. *nice* :-D

In a serious response, there have been discussions on ExtraTerrestrial, intelligent life and some proposed that it may not be likely for such life to exist the same time we exist (nevermind "visiting" us), but the chances are much greater when we include all time previous to our being advanced enough to consider it with technology.

[bascule]

If there is other intelligent life out there we're likely seperated by hundreds or thousands of parsecs.

Either that or they're located in an entirely different "universe container" called a Dp-brane.

Either way there are substantial barriers to interaction, provided they even exist.

[TheCotMan]

Either way there are substantial barriers to interaction, provided they even exist.

You know what could help? Faster Than Light communication.
Hey! This thread has come full circle!