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[Ars]Drilling holes in silicon equals bizarre optics - Page 5

post #41 of 108
Quote:
Originally Posted by guyladouche;14368989 
The results of the summarized research do not contradict anything that "Einstein" physics claim.

The following is from the article:
Quote:
the refractive index is the reason why the speed of light is what it is
Quote:
The authors probably have made a zero index material and, yes, it behaves as if it has zero length
Quote:
in this case, the speed of light seems to be infinite

Einstein's theories all rest upon the assumption that the maximum speed of light is fixed and unsurpassable- a constant. The experiments in this article indicate that under certain conditions that the speed of light can be infinite, at least from certain perspectives. That is what I was referring to.

As for your thoughts on a pretty good vacuum being close enough to guess at what would occur in a perfect one, I simply disagree. If we cannot create a vacuum, or observe one, then we do not know what will occur in one. This isn't even getting into the fact that the same scientists who claim that they know what will happen in a vacuum also insist that somewhere between 60% - 99% percent of the universe is made up of an unseeable, unknowable, undetectable, yet all pervasive thing called "Dark Matter" or "Dark Energy". How much of this stuff is in your "good enough" vacuum? Is it packed with it? Is there none? How do you know? What if you could remove it? Would light's speed still be restricted? Nobody knows.

You can claim that
Quote:
Regardless of what the index of refraction might be for a "true" vacuum, theory holds perfectly true for predicting the refractive index for water, mixtures of gases, etc.
is true all you want, it is still just baseless assumption.

P.S. I love your choice of name there guy.
Edited by Jagged_Steel - 7/27/11 at 2:48pm
    
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post #42 of 108
Quote:
Originally Posted by Ecchi-BANZAII!!! View Post
Articles are more fun with images or videos.
positive refraction index


negative refraction index: http://upload.wikimedia.org/wikipedi...refraction.ogg

i bet that didnt help
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post #43 of 108
this one is much better illustrating

from http://people.ee.duke.edu/~drsmith/n...ndex_about.htm
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post #44 of 108
so confusing!
post #45 of 108
medical is truly awesome
    
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post #46 of 108
Quote:
Originally Posted by Jagged_Steel View Post
Einstein's theories all rest upon the assumption that the maximum speed of light is fixed and unsurpassable- a constant. The experiments in this article indicate that under certain conditions that the speed of light can be infinite, at least from certain perspectives. That is what I was referring to.
No, you're completely misunderstanding the concept of the speed of light "c."

The speed of light "c" is defined only for the medium it is traveling in, which is entirely dependent on the index of refraction for that particular medium. Do not get confused by the difference between the observer's frame of reference and the light's frame of reference. We might see the apparent speed of light in our frame of reference to be "infinite" for a medium that has an index of refraction of zero, but the speed of light within that medium is still "c." Theories only state that we cannot surpass "c." Theories do not state the absolute maximum speed that "c" can take on. You're probably recalling over and over the value of 3.0x10^8 m/s--that speed of light is only true for a vacuum (or near-vacuum, since you're bothered by the idea of a true vacuum), it is not true for any other medium. Look up things called Bose-Einstein Condensates--the speed of light for some of them have been slowed down to a mere tens of meters per second. But that speed is still "c," and you can still theoretically never surpass that within that medium.

Quote:
Originally Posted by Jagged_Steel View Post
As for your thoughts on a pretty good vacuum being close enough to guess at what would occur in a perfect one, I simply disagree. If we cannot create a vacuum, or observe one, then we do not know what will occur in one. This isn't even getting into the fact that the same scientists who claim that they know what will happen in a vacuum also insist that somewhere between 60% - 99% percent of the universe is made up of an unseeable, unkowable, undetectable, yet all pervasive thing called "Dark Matter" or "Dark Energy". How much of this stuff is in your "good enough" vacuum? Is it packed with it? Is there none? How do you know? What if you could remove it? Would light's speed still be restricted? Nobody knows.

You can claim that

is true all you want, it is still just baseless assumption.
Actually, by definition, it's an entirely based assumption...on equations...that have been proven time and time again.

Disagree all you want, you still can't disprove the theory. A theory only ever needs to be disproved in order to be invalid. It does not need to be proved for all possibilities in order to be validated. Your "feelings" on that are beside the point.
    
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post #47 of 108
tldr but do we have ourselves the material for a future invisibility cloak?
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post #48 of 108
Quote:
Originally Posted by dealio View Post
positive refraction index


negative refraction index: http://upload.wikimedia.org/wikipedi...refraction.ogg

i bet that didnt help
Reminds me of fish sight when looking up on fishers.
And by fish, the first thing that comes to mind is this said fish.


DOPE FISH FTW
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post #49 of 108
Quote:
Originally Posted by guyladouche View Post
No, you're completely misunderstanding the concept of the speed of light "c."

The speed of light "c" is defined only for the medium it is traveling in, which is entirely dependent on the index of refraction for that particular medium. Do not get confused by the difference between the observer's frame of reference and the light's frame of reference. We might see the apparent speed of light in our frame of reference to be "infinite" for a medium that has an index of refraction of zero, but the speed of light within that medium is still "c." Theories only state that we cannot surpass "c." Theories do not state the absolute maximum speed that "c" can take on. You're probably recalling over and over the value of 3.0x10^8 m/s--that speed of light is only true for a vacuum (or near-vacuum, since you're bothered by the idea of a true vacuum), it is not true for any other medium. Look up things called Bose-Einstein Condensates--the speed of light for some of them have been slowed down to a mere tens of meters per second. But that speed is still "c," and you can still theoretically never surpass that within that medium.



Actually, by definition, it's an entirely based assumption...on equations...that have been proven time and time again.

Disagree all you want, you still can't disprove the theory. A theory only ever needs to be disproved in order to be invalid. It does not need to be proved for all possibilities in order to be validated. Your "feelings" on that are beside the point.
No point in arguing with him, he spent about 20 posts in another thread trying to argue that absolutely nothing can be proven, even mathematics. Here's the thread if you'd like to see for yourself: http://www.overclock.net/technology-...-end-time.html
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post #50 of 108
Quote:
Originally Posted by dealio View Post
this one is much better illustrating
Until you try and explain to them that both waves in that images are traveling forward.
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