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Who was the first scientist to describe negative – index materials theoretically?

Who was the first scientist to describe negative – index materials theoretically? Correct Answer Victor Veselago

The theoretical properties of metamaterials or negative index metamaterials were described by Victor Veselago in the 1960s. He was able to prove the transmission of light through these materials. He also showed that the phase velocity could be anti – parallel to Poynting vector for these materials.

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