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....incredible DOUBLE rainbow that appears to rise out of the water in Scotland

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發表於 2017-9-13 23:48:39 |顯示全部樓層
本帖最後由 toylet 於 2017-9-13 23:50 編輯

....incredible DOUBLE rainbow that appears to rise out of the water in Scotland
'Once-in-a-lifetime' images show an incredible DOUBLE rainbow that appears to rise out of the water in Scotland
Full story: http://www.dailymail.co.uk/scien ... double-rainbow.html

These 'once-in-a-lifetime' snaps show the moment a ferry sailed past a stunning double rainbow that sat so low in the sky they appeared to rise out of the water like a bridge.

The stunning images were captured by a keen wildlife observer who braved torrential rain in Scotland, waiting patiently in a hide hoping to photograph an otter.

Although his intended subjects largely eluded him, his efforts were rewarded with these unique pictures of a breath-taking meteorological phenomenon.

Read more: http://www.dailymail.co.uk/scien ... .html#ixzz4sZgZ2PwJ

... more ....

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發表於 2017-9-13 23:49:47 |顯示全部樓層

【AM730】人生幾見彩虹橋

【AM730】人生幾見彩虹橋
全文見: https://www.am730.com.hk/news/%E ... 9%b9%e6%a9%8b-95472

人生難得幾回見奇景:低掛於天際的雙彩虹,恰好在駛過渡輪上形成一道彩虹拱橋。野生攝影師無懼蘇格蘭暴雨,一直在守候水獺入鏡,卻有更精彩收成。


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發表於 2017-9-14 00:58:19 |顯示全部樓層
本帖最後由 ICE_AGE 於 2017-9-14 01:01 編輯

Once in a lifetime phenomena? Fake news!
You'll find every rainbow has a double if you know where to look. In this case, the sun light has to be strong enough for the double to reveal itself.
Watch the video starting at 20:50




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發表於 2017-9-14 03:57:36 |顯示全部樓層
ICE_AGE 發表於 2017-9-14 00:58
Once in a lifetime phenomena? Fake news!
You'll find every rainbow has a double if you know where to ...

Was he just arguing that all rainbows came with less visible shadow rainbows?
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發表於 2017-9-14 17:03:52 |顯示全部樓層
本帖最後由 ICE_AGE 於 2017-9-14 17:05 編輯
toylet 發表於 2017-9-14 03:57
Was he just arguing that all rainbows came with less visible shadow rainbows?

He has provided the explanation for every rainbow to have a fainter secondary, however, most are too dim to be noticeable.

Occasionally when the sun light is strong, the light can go one more round inside the water droplets and come out bright enough to be visible, hence a spectacular secondary rainbow.
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發表於 2017-9-14 18:25:56 |顯示全部樓層
ICE_AGE 發表於 2017-9-14 17:03
He has provided the explanation for every rainbow to have a fainter secondary, however, most are to ...

Thank you, Your Honor!
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