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A Zeiss Universarium Mark IX starball projector. A planetarium projector, also known as a star projector, is a device used to project images of celestial objects onto the dome in a planetarium. Modern planetarium projectors were first designed and built by the Carl Zeiss Jena company in Germany between 1923 and 1925, and have since grown more ...
The Mark I projector installed in the Deutsches Museum in 1923 was the world's first planetarium projector. The Mark III modified projector installed in the Planetario Humboldt 1950 in Caracas - Venezuela.It is the oldest in Latin America. Marks II through VI utilized two small spheres of lenses separated along a central axis.
The Municipal Light Plant is a historic building in the Arena District of Downtown Columbus, Ohio. It was listed on the National Register of Historic Places in 2015. The structure includes an early 20th century Romanesque Revival building and a mid-20th century Art Deco addition.
Northland Mall was a shopping mall located on the north side of Columbus, Ohio, at the intersection of Morse Road and Karl Road.It opened in 1964 as an open-air shopping center.
Columbus City Center (known locally as City Center) was a 1,250,000 sq ft (116,000 m 2), three-level shopping mall in Columbus, Ohio.It was located in the city's downtown, near the Ohio Statehouse, next to the Ohio Theatre, and connected to the Hyatt on Capitol Square hotel.
A large-format slide projector (also often called large-format projector or large-image projector) is a kind of slide projector for large image projection which has a very powerful light source (up to 12 thousand watts using arc lamps). The light source generates a lot of heat even when filtered to only visible light; the projected transparency ...