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No, as a practical thing. Yes, look up "metamaterials". Metamaterials can produce a limited form of invisibility around a very small area. However to "someone" made invisible by being inside a metamaterial "cloak" to them everything else is invisible. Metamaterials have been built, tested, and shown to operate for electromagnetic frequencies up to microwave and for sound and other mechanical waves. One major problem that prevents metamaterials from being a practical invisibility cloak is that they are extremely frequency sensitive (i.e. shift the frequency of the radiation only a small amount and the metamaterial loses allof its "meta" properties and what is inside is visible).

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