News Flash Images the Amazing Does It Again
People tell me when I go to the embankment to look at the sunset to try to see a greenish flash. What is a green flash?
The green wink is an optical phenomenon that you can see before long afterward dusk or before sunrise. It happens when the sun is nigh entirely beneath the horizon, with the barest edge of the sun – the upper edge – nevertheless visible. For a 2d or two, that upper rim of the dominicus will appear green in color. It's a brief flash of the color green – the legendary green flash. It'south really quite heady to come across, especially if you've been looking for 1.
It'south said that in one case you've seen a dark-green wink, yous'll never again go wrong in matters of the heart.
How tin yous see a dark-green flash? Yous just demand two things:
one. A clear 24-hour interval with no haze or deject on the horizon.
2. A distant horizon – and a distinct border to the horizon. You can see the green wink from a mountaintop or high building. But information technology's most oft seen over the bounding main, by people on beaches or in boats.
Important tip: Don't look at the sunday until information technology is nigh entirely beneath the horizon. If you exercise, yous will dazzle (or damage) your optics and ruin your green flash chances for that day.
Since you lot need to know exactly where to look along the horizon, and since most of united states of america aren't up before dawn, light-green flashes are nigh often seen afterwards sunset. But diligent observers tin see them before dawn, likewise. And, although they're near often seen over the bounding main, you can see dark-green flashes over land, also, if your horizon is far enough away.
What is the greenish ray? The flash tin be similar a flame that shoots above the horizon. In that case, it's chosen a light-green ray. I've seen lots of green flashes, only never a light-green ray, although I was in one case walking on a beach in Mexico and turned away just as my companion saw i. I did not detect whatsoever photos of flamelike green rays (if y'all know of one, let me know), but the photo below suggests the ancestry of a ray.
What makes a green flash? The green flash is the result of looking at the sun through a greater and greater thickness of temper equally y'all look lower and lower in the sky. Water vapor in the atmosphere absorbs the yellow and orange colors in white sunlight, and air molecules scatter the violet light. That leaves the carmine and blue-greenish light to travel directly toward you. Almost the horizon, the sun's light is highly bent or refracted. It's as though there are two suns – a red one and a blue-light-green ane – partially roofing each other. The red one is always closest to the horizon, then when it sets or before it rises, you see but the blue-light-green disk – the green wink.
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Bottom line: How to run into the elusive greenish flash.
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Source: https://earthsky.org/earth/can-i-see-a-green-flash/
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