Sunset - Wikipedia
Sunset (or sundown) is the disappearance of the Sun at the end of the Sun path, below the horizon of the Earth (or any other astronomical object in the Solar System) due to its rotation. As viewed from everywhere on Earth, it is a phenomenon that happens approximately once every 24 hours, except in areas close to the poles .
Green flash - Wikipedia
The green flash and green ray are meteorological optical phenomena that sometimes occur transiently around the moment of sunset or sunrise. When the conditions are right, a distinct green spot is briefly visible above the Sun 's upper limb ; the green appearance usually lasts for no more than two seconds.
The Green Flash: Legends, Lore, and Science Behind The Sunset Phenomenon
2024年5月6日 · What Is A Green Flash? A green flash is a phenomenon in which part of the Sun appears to suddenly change to bright green for about 1 or 2 seconds. The brief flash of green light is seen more often at sunset than at sunrise. What Causes A Green Flash? The elusive green flash can also be spotted over land, with a clear view of the horizon.
Sunset color science: why the coldest months of the year produce …
2019年11月22日 · Sunset colors are created by a phenomenon called Rayleigh scattering. It’s the same phenomenon that makes the sky appear blue during the day. Sunlight contains all the colors of the rainbow. But...
What’s a green flash and how can I see one? - EarthSky
2023年12月7日 · The green flash is an optical phenomenon that you can see shortly after sunset or before sunrise. It happens when the sun is almost entirely below the horizon, with the upper edge...
Why is there sometimes a green flash at sunset and sunrise?
2024年5月19日 · As the sun dips below the horizon and the light starts to dim, lucky observers may spot a rare, brief flash of emerald. This is the "green flash," which can sometimes be seen right after sunset...
What causes the strange green flash at sunset and sunrise on Earth?
2023年6月24日 · This rather rare phenomenon is known as the "green flash." The green color is produced by atmospheric refraction of light, which causes objects near the horizon to appear slightly higher in the...
The Science of Sunsets
Why do striking sunsets appear in some parts of the world more than others, and why are they most often seen during certain months? What atmospheric conditions create truly memorable sunrises and sunsets? These and other twilight phenomena are explored in the paragraphs that follow. What dust and pollution don't do.
The Science of Sunsets - National Geographic Education Blog
2013年10月28日 · Read the Nat Geo News article, or read our short media spotlight “Orange Sunset, Emerald Isle.” They explain the same phenomenon. What two ingredients make a beautiful orange sunset? 1. The sun! Our superstar is the not-so-secret ingredient in every sunset and sunrise. 2. Earth’s atmosphere! This thin blue line is what filters and ...
The Green Flash: Optical Phenomenon During Sunrise or Sunset
2023年12月5日 · Defined as a brief and intense green or blue-green light visible just above the sun’s upper rim during sunrise or sunset, the Green Flash is a phenomenon both rare and enchanting. Its history is rich, embedded in cultural beliefs and scientific inquiry.