Snow Rainbows
There is some controversy over whether or not the
snow rainbow weather phenomenon even exists. I saw this photo posted on FB by
my nephew’s wife, and even though the colors aren't clear they are there, hence
it looked like a rainbow to her and I concur. So I dove into the snow rainbow
discussion, without so much as a pair of cross country skis, and there are a
couple of things that drift to mind, snow what I mean? Many weather people
mention that in order for light to be refracted into the color spectrum and
form a rainbow it must pass through a
rounded raindrop. Snowflakes do not
have the necessary curves, but then neither do the prisms I used when I taught
elementary school science. Because snowflakes have so many surfaces the color
refraction doesn't show, the light is purportedly too scrambled, but there is a
thing called a parahelia that is similar to a rainbow when sunlight is
refracted through snow or ice crystals in cirrus clouds. The word parahelia
showing up red wiggly, underlined by the spell check that is part of my
computer’s software programming makes me wonder about parahelia’s validity as a
word. There’s no such underline under snow rainbow so why not just call it what
it is? Even in South GA you can’t miss the fact that there has been a lot of
snow in the US lately so if I were you, living in the snowy climes, I’d be on
the lookout for a snow rainbow!
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