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The effect can be seen just by poking a stick into the water; at the water surface, the light changes its direction, the stick appears to be bent. This tilt is described by the refractive index. For years, scientists have been trying to create special materials with a negative refractive index – their optical properties are quite different from those of normal materials. Researchers at the TU Vienna could now show that even common metals can have a negative refractive index, if they are placed in a magnetic field
Prior research in the United Kingdom showed the phenomenon was possible with microwaves. Although scientists had suspected since the 1960s that the reverse Doppler effect was possible with light waves, the technology didn't exist to prove the concept. The researchers achieved this by creating an artificial nanostructured crystal - known as a 'photonic crystal' - out of silicon. "In our super prism the dispersion of light was twice the magnitude of a standard Newton prism," Gu says. "This large angle makes the prism's refractive index - a property that determines how fast light travels through it - change to negative." All materials that occur in nature have a positive refractive index. This means whenever they move in respect to an observer, they will exhibit the standard Doppler effect. "By creating this artificial material, with a negative refractive index, we were able to reverse this natural phenomenon," Gu says.
Originally posted by Thought Provoker
reply to post by ShaunHatfield
I was born 23 years after the event. Thus, I, like most of humanity, only have several decades of eyewitness accounts and about four hundred TV documentaries to go on. But since this latest scientific breakthrough makes it obviously crystal-clear that magnetic fields around metallic objects can bend light and hide something from view, and given the fact that that's the exact description those witnesses give of the Philadelphia Experiment's goals and even methodology, I'd say it's NOT a "recent breakthrough" or even a new idea. The P.E. has been public knowledge for at least 30 or 40 years now. You might as well ask me to prove that the Crusades actually happened.