Rcjp's Weblog

February 23, 2005

Snowbow

Filed under: physics — rcjp @ 12:04 pm

snowbow1

ok, I made that name up. It seem there is officially no such thing as a snowbow, but I think its a good name (as it was starting to snow when I took this picture).

So why is it different from a rainbow? Well, when you see a rainbow the sun is always behind you and the sunlight is being refracted from water droplets back towards you – but in the picture the sun is infront of me and I’m leaning out of my window and looking up (you can just see the guttering at the eaves of the house at the top of the picture).

More correctly its called a ‘Circumzenithal Arc’ according to this excellent rainbow site.

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