Most indoor rainbows are induced, created, spring from a prism set up on something in a windowsill, or a faceted crystal hanging in the window, or prismatic window coverings or stickers.
Light-separating gadgetry needs sunlight, though, and cats love to find a sunbeam.
Even without cats, you might be able to bring occasional rainbows into your home.
The rainbow tag on this blog will bring up some indoor rainbows, and many actual full-sky arcs. Enjoy
and there will be another tomorrow
photo by Amber Ivey
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