Saturday, February 16, 2019
Green Flash from the Sun :: weather sunset
Many think its just a myth. Others think it is uncoiled but its cause isnt known. Adventurers pride themselves on having gainn it. Its a green tawdry from the Sun. The truth is the green photoflash does exist and its cause is well understood. besides as the setting Sun disappears completely from view, a last shine appears startlingly green. The found is typically visible only from locations with a low, outside horizon, and lasts just a few seconds. A green flash is too visible for a rising Sun, but takes better timing to spot. A s scant(p) variant of this was caught in the above photograph, where much of the Sun was exempt visible, but the very top appeared momentarily green. The Sun itself does not phone number partly green, the effect is caused by layers of the nations atmosphere acting like a prism.The Green FlashDefinition and Description The green flash is an atmospheric refractive phenomenon where the top edge of the sun will momentarily turn back green. It is seen rarely by the naked eye, primarily because it requires specific conditions to occur, but as well as because it requires the observer to know what to look for. Despite the name, there is no flash the event only lasts from a fraction of a second to at the longest, a few seconds.The Basic Cause Refraction bends the unmortgaged of the sun. The atmosphere acts like a rickety prism, separating the light into diferent strains. Blue light is bent more strongly than red. But this refraction is very weak even at the horizon, which is why the sun isnt seen as being multi-colored in the daytime. The effect is magnified by the atmosphere, and at the horizon there is a lot of atmosphere between the sun and the viewer. Layering in the atmosphere causes an effect similar to a horizontal cylindrical lens the separation of the color bands is exaggerated in the vertical direction.Conditions The green flash is best observed when you have a clear view of the horizon, with no object s or contamination in the line of sight. Usually you need to be able to see a distance of several miles out, almost to the point where the curvature of the Earth defines the limit. Because of this, the green flash is most often reported by the ocean.
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