There are parks in California and Kentucky where these appear consistently and predictably in the waterfalls for a couple of hours each month. Really pretty, like the faintest ghost of a rainbow.
Photos don't really do it justice, because most photos of them are long-exposure that crank the colors up; in person (at least when I saw it) it was pale grey in the night.
most of the time they are very faint, and you wouldn’t notice they are there, i have captured them using 30 sec long exposures on my camera, they bright ones are rare
Isn’t that just a rainbow. I mean it’s the same effect. Just with a different light source. Seeing as the light source is not specified in the word rainbow, I don’t see the need to a different word.
In person they’re quite distinct. Very faint and dulled colors. It’s the same effect but it looks different enough, along with the different context of the experience, that they could be considered different phenomena.
I’ve actually seen one of these things. I was on night shift up at one of the mines in the middle of winter. Perfectly clear night. Super cold. The one I saw was pale but it was entirely massive and formed a halo around the moon
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