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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 complex.
Traditional planetarium projection apparatus use a hollow ball with a light inside, and a pinhole for each star, hence the name "star ball". With some of the brightest stars (e.g. Sirius, Canopus, Vega), the hole must be so big to let enough light through that there must be a small lens in the hole to focus the light to a sharp point on the ...
The mural at the Rijksmuseum in Amsterdam is a contemporary example of a star-painted ceiling. The installation was painted in 2013 and consists of 47,000 painted black stars on a plain white ceiling. The six-pointed stars were hand-painted by Richard Wright and his art team over a period of two months. [25]
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 discolored portion is oxidation of the stainless steel caused by the high temperature of the lamp, but the gobo is still usable. A glass gobo of the Earth, projected using a halogen projector A gobo being projected with beams of smoke. Gobos are used with projectors and simpler light sources to create lighting scenes in theatrical applications.
Light can often be seen as or used in a way to become closer to God and this can be connected to the many lamps in mosques. [12] Qur'an 24:35: [13]:God is the Light of the heavens and the earth. The Parable of His Light is as if there were a Niche and within it a Lamp the Lamp enclosed in Glass: the glass as it were a brilliant star
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