metamaterials / negative index of refraction

[StompinTom]

Well how cool. I'd like to emulate reality when I render stuff with Indigo. Why would I need something that only works under very specific conditions in a lab? I assumed he wanted other IOR<1 to emulate being under water or something .

fact is, they exist. and whether or not you personally need them doesnt make a difference. maybe right now the metamaterials discovered only work for certain wavelengths in "specific conditions in a lab" but whos to say that there couldnt be such materials that work for optical wavelengths in not-so-specific conditions?
you say you want to emulate reality with Indigo? fine. but how do you know that what exists right now is all there is to "reality"?
and negative is negative. read the post.

Why the hell do I spend my teaching fools?

and noone asked you to spend your precious time "teaching fools", so get off your high horse. forums are for debate and critical discussion, not condescending elitism. how about some respect for other people? especially since you know next to nothing about most anyone on this forum.

[Kram1032]

I can't really imagine: If they only work in invisible light, how do they look in visible light?
Just normally?
If so, it would be funny to have metamats, that only work in a few parts of visible light ->
I.E. Red light is tangented but rest (Cyan) is like usual! That would give a crazy look!
I'd like to see this

[oodmb]

well, metamaterials would not look normal if they worked for the visable spectrum. what metamaterials do to the light that they currently effect, is to bend it around the surface of the material in such a way that it leaves the material at the point that it would have left if there was no material and in the same direction. basicaly, it serves as a sort of invisibility coat. unlike air which is also transparent, metamaterials do bend light a little at the point the light leaves, and they will also bend light around a medium within the material. like if you had a metamaterial sphere, and but a box of chocolate in it, the box of chocolate be invisible and it would seem as just air, or nothing, and nobody could steal your chocolate!
however, this only works for certain negative index of refractions as is seen in the povray scene which bends the light around the stick in such a way that the refraction of the stick is moved and not skipped.

[Kram1032]

Aaaah! In this case, I've already heard something about it
Yes, that would be nice!
But you didn't answer my question, correctly
I meant: How do IR/UV-Metamaterials look AT THE MOMENT in Visible light...

The documentation also said, that there would be a great problem with it:
If light "100% goes arround a surface", so, that it effects as tarning, and you'd sit in a metamat-sphere, no light would get to your eye, as everything is transmitted arround the sphere...

It would be interesting for tests with "Noice-metamats", which do the same to noises!

Then, you could test, how the life is for deaf-blinds...

But one question remains:
How do they react to light, that comes from inside!
(You know, humans have warm blood )
Will it be "reflected"?
As it already works in IR, it should be possible to test that...

[Zom-B]

Even if this whole stuff is possible, Its (totally) useless for the most of us...
The most guys & gals around here try to simulate real world ligtning,
also no customer is interested in such crap.

If I could chose from this feature integrated in Indigo, or a cooled beer...
yeah, you sure know...

The documentation also said, that there would be a great problem with it:
If light "100% goes arround a surface", so, that it effects as tarning, and you'd sit in a metamat-sphere, no light would get to your eye, as everything is transmitted arround the sphere...

Thats why every "invisible man" created by Hollywood you know, should be blind, not light travels in his eye and makes you blind like in 100% darkness

So no sneaking invisible inside a cheerleaders locker room after training... sorry guys, you simply would not find the door

[CTZn]

Gimme a fresh beer, zomB ! arf I want one right now ! prösit !

[oodmb]

Thats why every "invisible man" created by Hollywood you know, should be blind, not light travels in his eye and makes you blind like in 100% darkness

well, if you made a whole in the surface leading to the object, he might be able to see, to tell you the truth, i dont know and i dont think there is an easy way to figure this out. maybe this is where intigrating code into indigo might be usefull.

If I could chose from this feature integrated in Indigo, or a cooled beer...

maybe, but indigo= code, not beer.



Btw, when i first introduced this topic, it was late i was tired and i was being sarcastic. but now that it has gone on a little longer, i actualy think this sort of code intigration might be a realy good idea.