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The Christmas tree night light has taken social media by storm with over a combined 10 million views on TikTok videos that feature small, tree-shaped lights. These night lights are designed to ...
Predominantly because of this effect, white light sources such as metal halide, fluorescent, or white LED can produce as much as 3.3 times the visual sky glow brightness of the currently most-common high-pressure sodium lamp, and up to eight times the brightness of low-pressure sodium or amber Aluminium gallium indium phosphide LED.
Through their website and several television commercials they announced the event will be a separate ticketed event on eight nights in December and will feature one million Christmas lights, Polar Express 4-D Experience, Looney Tunes on Ice, Ice Skating for guests, Christmas carollers, snow and a Christmas parade. [1] The first White Christmas ...
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.
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Directly taking images of night sky is also a part of astrophotography. [11] Like other photography, it can be used for the pursuit of science and/or leisure. [12] [13] Subjects include nocturnal animals. [11] In many cases starlight photography may also overlap with a need to understand the impact of moonlight. [11]
A three-chip DLP projector uses a prism to split light from the lamp, and each primary color of light is then routed to its own DMD chip, then recombined and routed out through the lens. Three chip systems are found in higher-end home theater projectors, large venue projectors and DLP Cinema projection systems found in digital movie theaters.
If light sources (e.g. the Moon and light pollution) were removed from the night sky, only direct starlight would be visible. The sky's brightness varies greatly over the day, and the primary cause differs as well. During daytime, when the Sun is above the horizon, the direct scattering of sunlight is the