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material
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If someone made something with alternating sections of metamaterial and conventional material, that were of equal and opposite refractive index over the spectrum of interest, what would happen to the incoming light? Would it travel at right angles to the material? If the refractive index of the two materials were different in magnitude, could you steer the incident light in any direction? What configuration could allow the light to concentrate on one spot? What configuration could allow diffuse light to become light that exits on the other side of the material in the same direction without filtering the light? What configuration could allow the light to loop around in the material?
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