Japanese researchers invent completely transparent material

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Cabrewolf @ May 2nd 2006 10:44PM

It's odd that this is a big deal, it has been around for some time. I have seen it in a lab. It is not actually invisible to the eye, it is wavelength sensitive, so it only has the negative refraction value for one wavelength (and it is not a visible wavelength). Keep in mind that it actually is visible even in its set wavelength because it has a negative refraction value; only when paired with an equal positive wavelength value does it become invisible at that wavelength.

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