Rays & Shadows
Not a rainbow!
A's Dark Band
3rd & 4th
5th & 6th
Zero Order Glow
Sea Spray Bow
Glass Bead Bows
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of the first six rainbow orders
Each extra reflection inside the raindrops produces a different rainbow.
The higher order bows get progressively fainter because each reflection dims the rays. They also get broader and hence their surface brightness is even further reduced.
Only those from one and two reflections and the zero order glow have ever been reliably sighted in the sky.
Click the drops to see the rainbows.