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2. Perovskite (structure) - Wikipedia

   en.wikipedia.org/wiki/Perovskite_(structure)

   Perovskite (structure) Structure of a perovskite with general chemical formula ABX 3. The red spheres are X atoms (usually oxygens), the blue spheres are B atoms (a smaller metal cation, such as Ti 4+ ), and the green spheres are the A atoms (a larger metal cation, such as Ca 2+ ). Pictured is the undistorted cubic structure; the symmetry is ...

3. Panelling - Wikipedia

   en.wikipedia.org/wiki/Panelling

   Panelling (or paneling in the United States) is a millwork wall covering constructed from rigid or semi-rigid components. [1] These are traditionally interlocking wood, but could be plastic or other materials. Panelling was developed in antiquity to make rooms in stone buildings more comfortable both by insulating the room from the stone, and ...

4. Integrated Truss Structure - Wikipedia

   en.wikipedia.org/wiki/Integrated_Truss_Structure

   The white cladding are Kevlar panels to protect from micro-meteoroids ISS elements as of December 2022 in exploded view. The Integrated Truss Structure ( ITS ) of the International Space Station (ISS) consists of a linear arranged sequence of connected trusses on which various unpressurized components are mounted such as logistics carriers ...

5. Perovskite solar cell - Wikipedia

   en.wikipedia.org/wiki/Perovskite_solar_cell

   A perovskite solar cell ( PSC) is a type of solar cell that includes a perovskite-structured compound, most commonly a hybrid organic–inorganic lead or tin halide-based material as the light-harvesting active layer. [1] [2] Perovskite materials, such as methylammonium lead halides and all-inorganic cesium lead halide, are cheap to produce and ...

6. Sandwich panel - Wikipedia

   en.wikipedia.org/wiki/Sandwich_panel

   A sandwich panel is any structure made of three layers: a low-density core ( PIR, mineral wool, XPS ), and a thin skin-layer bonded to each side. Sandwich panels are used in applications where a combination of high structural rigidity and low weight is required. The structural functionality of a sandwich panel is similar to the classic I-beam ...

7. Oxford, Alabama - Wikipedia

   en.wikipedia.org/wiki/Oxford,_Alabama

   Oxford is a city in Calhoun, Talladega, and Cleburne counties in the State of Alabama, United States. The population was 22,069 at the 2020 census ,. [2] Oxford is one of two principal cities of and included in the Anniston-Oxford Metropolitan Statistical Area , and it is the largest city in Calhoun County by population.