What’s the solar sphere?

The Sunsphere is a 266m glass structure in Knoxville, Tennessee, built for the 1982 World’s Fair. It has five levels, including two observation decks and restaurant levels. The structure has been used for various purposes, including as a welcome center, private offices, and event space. Despite proposals for redevelopment, the structure remained unused until a […]

What’s an OpenGL® sphere?

An OpenGL sphere is a 3D object made up of triangles or quadrilaterals with equidistant vertices. The number of vertices determines smoothness, with 12 points creating an icosahedron. Subdividing the icosahedron creates a smoother sphere, but texturing can be complex. Using a utility library may be difficult to modify, so custom code may be preferable. […]

What’s the Celestial Sphere?

The celestial sphere is an imaginary structure used in astronomy and navigation to visualize the relative position of celestial bodies in relation to an observer on Earth. It is not a real object, but its use persists due to its simplicity. It can be visualized as a sphere larger than the Earth, with various celestial […]

What’s an integrating sphere?

An integrating sphere is a device used to test and measure light sources. It has a highly reflective coating that evenly spreads light over its inner surface, allowing for measurement of properties that cannot be observed otherwise. Integrating spheres are used by laboratories, researchers, quality control engineers, and consumer goods testing organizations, and can be […]

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