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In advanced stealth applications, what is the actual purpose of coating a surface with metamaterials?

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1. In advanced stealth applications, what is the actual purpose of coating a surface with metamaterials?

To increase the scattering of electromagnetic radiation back toward the radar

To generate an electromagnetic pulse that disables nearby radars

To improve the aircraft’s aerodynamic lift at high speed

To reduce or redirect the scattering of electromagnetic radiation, not increase it

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