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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 ...
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.
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]
Nuclear fusion takes place inside the stars, and we can really see this light redshifted: this is the main source of the cosmic ultraviolet- and visual background. However, a significant amount of this starlight is not observed directly. Dust in the host galaxies can absorb it and re-emit it in the infrared, contributing to the CIB.
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.
"The olive trees with white cloud and background of mountains [F712], as well as the Moonrise and the Night effect – – These are exaggerations from the point of view of the arrangement, their lines are contorted like those of the ancient woodcuts." References: Online database: Museum of Modern Art: online database: entry 79802; Authority file
Originally the pictures were hand painted on glass slides. Initially, figures were rendered with black paint but soon transparent colors were also used. Sometimes the painting was done on oiled paper. Usually black paint was used as a background to block superfluous light, so the figures could be projected without distracting borders or frames.
The house above appears a light cream during midday, but seems to be bluish white here in the dim light before full sunrise. Note the color temperature of the sunrise in the background. Video camera operators can white-balance objects that are not white, downplaying the color of the object used for white-balancing. For instance, they can bring ...