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This clever projector has over 10,000 five-star reviews on Amazon, like one that called it "perfect for bedroom, media room, or home theater."One shopper, who purchased it as a gift for his nieces ...
The laser projector will have you swimming among stars and galaxies in your own home for less than $50. Skip to main content. Sign in. Mail. 24/7 Help. For premium support please call: ...
50 inch fixed screen projector with two projector lenses with three tubes. 60 fL on screen brightness. KP-7200 [36] Sony: 1978: No : 480i : 50 [37] Analogue:
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.
The use of the gobo is "subtractive", as opposed to using a "reflector" to bounce added light into a shadow (thus "additive" lighting). Use of a gobo subtracts light from a portion of an overall shaded subject and creates a contrast between one side of the subject and the other.
A Rosetta orbit is a complex type of orbit. In astronomy , a Rosetta orbit occurs when there is a periastron shift during each orbital cycle. A retrograde Newtonian shift can occur when the central mass is extended rather than a point gravitational source, resulting in a non-closed orbit.
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