From NCERTAsked by Anonymous from Mountain View, United States5 Oct 2026, 9:38 AM ISTUpdated
In one line
Yes, you can see more than two rainbows at once, but it is very rare.
Rainbow — Meteorological phenomenon A double rainbow, showing both the primary and secondary arcs. Image: Wikipedia
The rule
A rainbow is formed when sunlight is bent (refracted), bounced (reflected), and spread out (dispersed) inside raindrops, creating colored arcs in the sky.
Let's understand it simply
Imagine sunlight as a cricket ball thrown into a bucket of water. The ball changes direction when it enters the water, bounces off the bottom, and then comes out. Sunlight does something similar inside a raindrop. Most of the time, we see one bright rainbow. Sometimes, a second, fainter rainbow appears outside the first. This happens because some sunlight bounces twice inside the raindrop before coming out. Even more bounces can make more rainbows, but these are very hard to see.
How it works
Sunlight enters a raindrop and bends (refracts).
It reflects off the inside of the drop—once for the main (primary) rainbow.
Some light reflects twice—this makes the secondary rainbow.
Light can reflect three or more times—these form tertiary (third) and quaternary (fourth) rainbows.
Each extra reflection makes the rainbow fainter and further from the sun.
How multiple rainbows form
Sunlight enters raindrop and bends
Light reflects once (primary rainbow)
Light reflects twice (secondary rainbow)
Light reflects three times (tertiary rainbow)
Each extra reflection makes a new, fainter rainbow
The story behind it
People have wondered about rainbows for centuries. Scientists like René Descartes (1600s) and Isaac Newton (1700s) explained how light bends and splits to make rainbows. The idea of more than two rainbows was tested by scientists using glass balls and water drops in labs.
Where you see it in real life
After a monsoon shower, you may see a bright rainbow and sometimes a second, fainter one above it—this is the secondary rainbow.
In rare cases, pilots flying above clouds have seen a third or even fourth rainbow on the opposite side of the sky.
Spraying water with a hose in sunlight can sometimes show two rainbows if the angle is right.
Photographers using special cameras have captured three or four rainbows in one photo, but it's very rare.
In science labs, using glass spheres and strong lights, more than two rainbows can be made and seen clearly.
Why it matters
Understanding rainbows helps us learn about how light behaves—important for optics (the study of light).
It explains why we see colors in oil spills, soap bubbles, and even CDs.
It shows how nature uses simple rules (like bending and bouncing) to create beauty.
Knowing about multiple rainbows helps in weather studies and photography.
Common mistakes
Thinking only one rainbow is possible: Actually, two are common, and more are possible but rare.
Believing all rainbows are equally bright: Each extra rainbow is much fainter than the last.
Mixing up the order: The main rainbow is always the brightest and closest to the sun; higher-order rainbows are further out.
Remember it
More than two rainbows can appear, but each extra one is fainter and harder to spot.
Check yourself
Why is the secondary rainbow fainter than the primary rainbow?
Because the light bounces twice inside the raindrop, losing some energy each time.
What causes a third (tertiary) rainbow?
Light reflecting three times inside a raindrop before coming out.
Where would you look to see a third or fourth rainbow?
On the opposite side of the sky from the sun, but they are very hard to see.
Quick recap
More than two rainbows can form, but it is rare.
Each extra rainbow is fainter and further from the sun.
Rainbows form by bending and bouncing of sunlight inside raindrops.
You usually see one or two, but three or four are possible in special cases.
