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  2. Prism graph - Wikipedia

    en.wikipedia.org/wiki/Prism_graph

    Prism graphs are examples of generalized Petersen graphs, with parameters GP ( n ,1). They may also be constructed as the Cartesian product of a cycle graph with a single edge. [1] As with many vertex-transitive graphs, the prism graphs may also be constructed as Cayley graphs. The order- n dihedral group is the group of symmetries of a regular ...

  3. K9 glass - Wikipedia

    en.wikipedia.org/wiki/K9_glass

    K9 glass. K9 glass, sometimes referred to as K9 crystal, is a variety of optical borosilicate crown glass. The letter "K" is a reference to the German word for "crown" ( Krone) and the number 9 refers to the lead oxide content of the glass (9%). K9 glass has high optical clarity, and is used in many contexts requiring this characteristic.

  4. List of United States Air Force installations - Wikipedia

    en.wikipedia.org/wiki/List_of_United_States_Air...

    Home to the 1st Fighter Wing and the Virginia Air National Guard's 192d Fighter Wing, both flying the F-22A Raptor. The base also hosts the headquarters of Air Combat Command, the 363rd Intelligence, Surveillance, and Reconnaissance (ISR) Wing and the 480th ISR Wing. [33] Laughlin Air Force Base. Del Rio.

  5. Dodecahedral prism - Wikipedia

    en.wikipedia.org/wiki/Dodecahedral_prism

    Dodecahedral prism. In geometry, a dodecahedral prism is a convex uniform 4-polytope. This 4-polytope has 14 polyhedral cells: 2 dodecahedra connected by 12 pentagonal prisms. It has 54 faces: 30 squares and 24 pentagons. It has 80 edges and 40 vertices. It can be constructed by creating two coinciding dodecahedra in 3-space, and translating ...

  6. Upside down goggles - Wikipedia

    en.wikipedia.org/wiki/Upside_down_goggles

    Upside down goggles. Upside down goggles, also known as "invertoscopes" by Russian researchers, [1] are optical instruments that invert the image received by the retinas upside down. They are used to study human visual perception, particularly psychological process of building a visual image in the brain. Objects viewed through such a device ...

  7. George M. Stratton - Wikipedia

    en.wikipedia.org/wiki/George_M._Stratton

    George Malcolm Stratton (September 26, 1865 – October 8, 1957) was an American psychologist who pioneered the study of perception in vision by wearing special glasses which inverted images up and down and left and right. He studied under one of the founders of modern psychology, Wilhelm Wundt, and started one of the first experimental ...

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