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7 Rare Rainbow Formations →
lucysdiamond:
Circular rainbows: Most of the rainbows we see are actually arcs of perfect circles (with, accordingly, radii of exactly 42 degrees).
Secondary rainbows: Primary rainbows are often accompanied by secondary rainbows that are usually thinner and dimmer than the main rainbow. They display the spectrum in reverse order from that of a primary rainbow.
Red rainbows: Red...
