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  2. Luneburg lens - Wikipedia

    en.wikipedia.org/wiki/Luneburg_lens

    A Luneburg lens (original German Lüneburg 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 ...

  3. OtterBox - Wikipedia

    en.wikipedia.org/wiki/Otterbox

    otterbox .com. Otter Products, LLC, or simply OtterBox, is a privately owned consumer electronics accessory company based in Fort Collins, Colorado, that produces cases for mobile devices. The company was founded in 1998 as a manufacturer of water-resistant boxes meant to house electronic devices, mostly catering to outdoor enthusiasts. [ 2]

  4. Gravitational lens - Wikipedia

    en.wikipedia.org/wiki/Gravitational_lens

    Unlike an optical lens, a point-like gravitational lens produces a maximum deflection of light that passes closest to its center, and a minimum deflection of light that travels furthest from its center. Consequently, a gravitational lens has no single focal point, but a focal line. The term "lens" in the context of gravitational light ...

  5. Pelco - Wikipedia

    en.wikipedia.org/wiki/Pelco

    A CCTV camera housing made by Pelco. Pelco Incorporated is an American security and surveillance technologies company. Founded in 1957 and headquartered in Fresno, California, [4] Pelco is a wholly owned subsidiary of Motorola Solutions. The company's products include security cameras, recording and management systems, and video analytics software.

  6. How AT&T customers can protect themselves in the latest data ...

    www.aol.com/finance/t-customers-protect...

    AT&T said Friday that data was breached from “nearly all” of its cellular customers and the customers of wireless providers that used its network between May 1, 2022, and October 31, 2022. The ...

  7. Intraocular lens power calculation - Wikipedia

    en.wikipedia.org/wiki/Intraocular_lens_power...

    The aim of an accurate intraocular lens power calculation is to provide an intraocular lens (IOL) that fits the specific needs and desires of the individual patient. The development of better instrumentation for measuring the eye's axial length (AL) and the use of more precise mathematical formulas to perform the appropriate calculations have significantly improved the accuracy with which the ...

  8. Symmetry (geometry) - Wikipedia

    en.wikipedia.org/wiki/Symmetry_(geometry)

    Symmetry (geometry) A drawing of a butterfly with bilateral symmetry, with left and right sides as mirror images of each other. In geometry, an object has symmetry if there is an operation or transformation (such as translation, scaling, rotation or reflection) that maps the figure/object onto itself (i.e., the object has an invariance under ...

  9. Geodesic polyhedron - Wikipedia

    en.wikipedia.org/wiki/Geodesic_polyhedron

    A geodesic polyhedron has straight edges and flat faces that approximate a sphere, but it can also be made as a spherical polyhedron (a tessellation on a sphere) with true geodesic curved edges on the surface of a sphere and spherical triangle faces. Conway. u 3 I = (kt)I.

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