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More on Lenses with a Negative Index of Refraction
Roland Piquepaille writes "A University of Toronto researcher has developed a flat lens that doesn't respect the "normal" laws of nature and could significantly enhance the resolution of imaged objects. "The creation of an unusual flat lens may finally resolve a long-running controversy about the existence of materials that have metaphysical qualities -- so-called "metamaterials" -- that transcend the laws of nature. The lens could lead to amplified antennas, smaller cell phones and increased data storage on CD-ROMs. As says George Eleftheriades, the Toronto professor, "This is new physics." Check this column for more details and other references to metamaterials."
It is impossible to transcend the laws of nature. You can only determine that your understanding of nature has changed.
Nick Powers
Encryption: I may not agree with what you say, but I will defend your right to encrypt it...
Actually, my BS detector went off in a few places in the linked article.
"Light passing through a flat glass lens will diverge." Not on my planet, bucko.
"'allows focusing almost two orders of magnitude higher than is possible with conventional lenses'..." Exactly what numerical quantity corresponds with "focusing?"
"the amount of information that could be stored on optical media would be vastly increased..." I thought that was limited by the wavelength of light used to record and read the information.
"By reversing the mathematical signs of the three main properties of all optical materials -- permittivity, permeability and refractive index -- Veselago showed that light going one way in normal materials would reverse direction in metamaterials." 1) Sure, if I start flipping signs in long-accepted equations that describe phenomena in the natural world, I can come up with all kinds of breakthroughs - antigravity, to say the least! 2) But if I set up a conventional refractive/reflective (I specifically omit "diffractive") optical system of any sort, can't I also run the light the other way identically?
Now, I think I recall an article in Scientific American some time back about structures made up of nanoantennae whose macroscopic optical properties were counterintuitive, but I don't think what I'm reading here speaks to that.