Observer below a strong atmospheric inversion Large upper part of an hourglass-shaped Sun turns green for up to 15 seconds The higher the eye, the more likely flash is most obvious when the eye is just above the inversion. Indentations seem to "pinch off" a thin, pointy strip from the upper rim of the Sun lasts 1 or 2 secondsĪtmospheric inversion layer below eye level surface colder than air Joule's "last glimpse" oval, flattened below lasts 1 or 2 seconds The "green flash" description relates to a group of optical phenomena, some of which are listed below: Type With slight magnification, a green rim on the top of the solar disk may be seen on most clear-day sunsets, although the flash or ray effects require a stronger layering of the atmosphere and a mirage, which serves to magnify the green from a fraction of a second to a couple of seconds. One might expect to see a blue flash, since blue light is refracted most of all and the blue component of the sun's light is therefore the last to disappear below the horizon, but the blue is preferentially scattered out of the line of sight, and the remaining light ends up appearing green. A green flash is more likely to be seen in stable, clear air, when more of the light from the setting sun reaches the observer without being scattered. Green flashes are enhanced by mirages, which increase refraction. Green flash occurs because the atmosphere causes the light from the Sun to separate, or refract, into different frequencies. While observing at the Vatican Observatory in 1960, D.J.K. O'Connell produced the first color photograph of the green flash at sunset. If the atmosphere is layered, the green flash may appear as a series of flashes. With an unrestricted view of the horizon, green flashes are regularly seen by airline pilots, particularly when flying westwards as the sunset is slowed. The green flash also may be observed in association with the Moon and bright planets at the horizon, including Venus and Jupiter. They may occur at any latitude, although at the equator, the flash rarely lasts longer than a second. They usually are seen at an unobstructed horizon, such as over the ocean, but are possible over cloud tops and mountain tops as well. Trending Hurricane Ian rips off a house's roof in Naples.Green flashes may be observed from any altitude.Trending Army soldiers sing ‘Sandese Aate Hain’ for Rajnath Singh at Assam military station.Entertainment Kochi and Malayalam cinema: An eternal love story that is ageing like fine wine.Entertainment Ponniyin Selvan box office prediction: Mani Ratnam's epic set for an earth-shattering opening.SC moves the needle on marital rape debate: for MTP purposes, it is rape.Gehlot says sorry to Sonia, bows out Kharge is new face.Salute to forest guards #NationalForestMartyrsDay Even the wild elephants are not safe in the wild there. govt should add more in deep / dense forests.God Bless your team.Ĭan something be done for the elephants in Odisha?. with wind blow it in turn brings water up. One such idea of Wind mill combined with Boring well. I was always wondering how these wild animals survive. Parveen Kaswan, IFS September 11, 2022ĭo you think we should interfere in wildlife by these kind of water holes etc? Genuine question, appreciate your view on this □ In dry season these water holes are their lifeline. In the dry season these water holes are their lifeline. While sharing the clip, Kaswan wrote, “That calf is having some best moments. The video shows two young elephants using their trunks to splash water all over their body. ALSO READ | Watch: Elephant herd wallows in muddy waters to beat the summer, internet approves
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