Thread: Rare rainbow

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  1. #1 Rare rainbow 
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    Click on the article link to see a pictue of the rare rainbow.
    http://news.nationalgeographic.com/news/20...inbow-fire.html

    Click below for the article text.
    [spoiler]June 19, 2006—It looks like a rainbow that's been set on fire, but this phenomenon is as cold as ice.

    Known in the weather world as a circumhorizontal arc, this rare sight was caught on film on June 3 as it hung over northern Idaho near the Washington State border (map of Idaho).

    The arc isn't a rainbow in the traditional sense—it is caused by light passing through wispy, high-altitude cirrus clouds. The sight occurs only when the sun is very high in the sky (more than 58? above the horizon). What's more, the hexagonal ice crystals that make up cirrus clouds must be shaped like thick plates with their faces parallel to the ground.

    When light enters through a vertical side face of such an ice crystal and leaves from the bottom face, it refracts, or bends, in the same way that light passes through a prism. If a cirrus's crystals are aligned just right, the whole cloud lights up in a spectrum of colors.

    This particular arc spanned several hundred square miles of sky and lasted for about an hour, according to the London Daily Mail. [/spoiler]

    It's rarer than an ordinary rainbow. You can only see it when the sun is at a certain point in the sky and the conditions are just right.
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  2. #2 Rare rainbow 
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    that looks like something to look at when your high.

    "whoaahhh, dude, pretty colors dude"

    i can imagine a hippie smoking a joint and staring at that pic right now...
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  3. #3 Rare rainbow 
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    Dude..is that..Rainbow on fire Dude?

    Otherguy: Dude..I think it is...DUUUUUUDE! Im on fire..

    Otherguy: Yea me to..The worlds on fire!
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  4. #4 Rare rainbow 
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    DUUUDE! were on FIRE man! now i dont need a lighter or a match to light my weed dude!
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  5. #5 Rare rainbow 
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    Dude..Im a human Ligher...I quess this is the real Burning man..DUUUUUUUUUUDE!
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