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Rayleigh scattering causes the blue color of the daytime sky and the reddening of the Sun at sunset. Rayleigh scattering ( / ˈreɪli / RAY-lee) is the predominantly elastic scattering of light, or other electromagnetic radiation, by particles with a size much smaller than the wavelength of the radiation. For light frequencies well below the ...
Diffuse sky radiation. In Earth's atmosphere, the dominant scattering efficiency of blue light is compared to red or green light. Scattering and absorption are major causes of the attenuation of sunlight radiation by the atmosphere. During broad daylight, the sky is blue due to Rayleigh scattering, while around sunrise or sunset, and especially ...
Did you see a string of lights move across the sky over North Texas on Thursday night, more than a dozen of them in a straight line? The startling sight around 9:44 p.m., coming from the western ...
In astronomy. A photographic approximation of a naked eye view of the night sky from a small rural town (top) and a metropolitan area (bottom). Light pollution dramatically reduces the visibility of stars. The visibility of astronomical objects is strongly affected by light pollution. Even a few hundred kilometers away from a metropolitan area ...
By Monday, 100% of the moon's nearside will be illuminated and about 99% of it will be illuminated by the sun on Tuesday. You don't need binoculars or a telescope to enjoy the spectacular view ...
A rare sky spectacle will occur Monday night that (probably) won't happen again for years: A full moon that can be called both a supermoon and blue moon will grace the night skies over the U.S ...
He resembles a bipedal whale with gray skin, sky blue eyes, and pillar-like legs, wearing a black battle shirt and black shorts, and stands twenty feet tall. When he is seen by humans on Hawaii , he typically attempts to pass himself off as Samoan , though Lilo once told Mertle he was a dog-catcher from Nairobi , which the other girl believed.
Solar viewers (also known as solar viewing glasses or solar eclipse glasses) are special eyewear designed for direct viewing of the Sun. Standard sunglasses are unable to filter out eye damaging radiation. Solar viewers can be used for safe viewing of solar events such as eclipses. The recommended optical density of this eyewear is 5, meaning ...