Blocks {superlens}| {metamaterial} can have thin wires in parallel planes {split-ring resonators} (SRR) a short distance apart, which have negative electrical permittivity and negative magnetic permeability and so negative refractive index. Forces from arrays push back on photons. Negative refractive index makes receding object blue-shifted. Cerenkov radiation travels in opposite direction, not forward. Refraction at boundary from positive to negative refraction bends light more, so it bends past perpendicular.
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Date Modified: 2022.0224