Matches in DBpedia 2016-04 for { ?s ?p "A Luneburg lens (originally Lüneburg lens, often incorrectly spelled Luneberg lens) is a spherically symmetric gradient-index lens. A typical Luneburg lens's refractive index n decreases radially from the center to the outer surface. They can be made for use with electromagnetic radiation from visible light to radio waves.For certain index profiles, the lens will form perfect geometrical images of two given concentric spheres onto each other."@en }
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- Luneburg_lens comment "A Luneburg lens (originally Lüneburg lens, often incorrectly spelled Luneberg lens) is a spherically symmetric gradient-index lens. A typical Luneburg lens's refractive index n decreases radially from the center to the outer surface. They can be made for use with electromagnetic radiation from visible light to radio waves.For certain index profiles, the lens will form perfect geometrical images of two given concentric spheres onto each other.".
- Q739536 comment "A Luneburg lens (originally Lüneburg lens, often incorrectly spelled Luneberg lens) is a spherically symmetric gradient-index lens. A typical Luneburg lens's refractive index n decreases radially from the center to the outer surface. They can be made for use with electromagnetic radiation from visible light to radio waves.For certain index profiles, the lens will form perfect geometrical images of two given concentric spheres onto each other.".