5 Interesting Facts About Rainbows

Maithily A | 11 - 21 - 2023
Facts about rainbow

Rainbows are the arcs of light that grace the sky after a rain shower. They are optical illusions created by the sun, rain, and your eyes. Rainbows form when sunlight strikes the raindrop at the right angle. They have captivated humanity for centuries. Their beauty has inspired poets, artists, children, and dreamers across cultures and time periods. Beyond their colors and beauty, they hold scientific explanations. Here’s the fascinating trivia and fun facts about the rainbow. 

Why are Rainbows Special?


Rainbows are unique and we don’t get to see them every day. Everyone, regardless of age, wishes to see a rainbow for its colors and uniqueness. They are just more than just pretty sights; they are the finest products of light and water. When sunlight encounters raindrops, it undergoes a process called refraction. As light bends and enters the water droplet, it splits into multiple colors – red, orange, green, blue, indigo, and violet. These colors are then reflected and emerge at different angles, creating the rainbow we see in the sky. This explains “how are rainbows created.” Rainbows are appealing to everyone including children. 

What is the shape of the rainbow?
  • A. Circle
  • B. Rectangle
  • C. Semi-circle
  • D. Cone

How Did Rainbows Get Their Name?

The word “rainbow” comes from the Old English word “regenboga,” which means “rain bow.” The earliest recorded use of the word dates back to the 13th century.

What are the 5 Scientific Facts about Rainbows?

  1. The angle of the rainbow arc depends on the size of the raindrops. Smaller raindrops produce larger rainbows. 
  2. The brightness of a rainbow depends on the intensity of the sunlight and the amount of water in the air. 
  3. Rainbow colors are not pure; they are mixtures of different wavelengths of light. 
  4. The colors of the rainbow decrease in wavelength, with red having the longest and violet having the shortest. 
  5. They are always full circle. 

What are the Top 10 Interesting Facts about Rainbows?


  1. Rainbows are actually complete circles, but we only see the arc from our perspective.
  2. Rainbows appear opposite the sun in the sky.
  3. The order of colors in a rainbow can be remembered using the acronym ROY G. BIV. How good are your with acronyms. Take this brand acronym quiz now. 
  4. No two people see the exact same rainbow.
  5. Rainbows can be formed in mist, fog, waterfalls, and even around shadows.
  6. The longest-lasting rainbow was observed for nearly 9 hours in Taiwan in 2017.
  7. Rainbows are not physical objects; they are optical illusions created by light.
  8. Earth is the only planet in our solar system known to have rainbows.
  9. Double rainbows are formed when light reflects an extra time inside the raindrop.
  10. The colors in a rainbow are not evenly spaced; red is the widest band, while violet is the narrowest.

What is the Longest Rainbow Ever Recorded?

The average duration of the rainbow is less than 60 minutes but in rare occasions, it may prolong. The longest rainbow ever recorded was in Taiwan, China, at 8 hours and 58 minutes in 2017 by a student and professor at a Chinese Culture University. While you are reading this, we’d like you to know the smallest measurement of time ever recorded. 

How Do We See a Rainbow? 


We can see the complete shape of the rainbow when flying in an airplane, while people on the ground can only see the semi-circle. A ‘glory’ is a full-circle rainbow. It is an optical phenomenon that looks like small, circular rainbows of interlocking colors. This answers the questions “how are rainbows formed.”

How Many Colors Are in the Rainbow?

There are a total of 7 colors. the raindrops reflect at an angle of 40 degrees for the red light and 42 degrees for the blue light. 

Where Can You See Rainbows?

With the resources and scientific technology, we have studies that prove that rainbows are common only on planet Earth. There is no other planet that has enough water in its atmosphere to cause rain. Now this makes me wonder if cloud seeding is possible in other planets. 


Can Everyone See a Rainbow?

Interestingly, it is not the same for everyone. Even two persons standing parallel cannot see a rainbow in the same way the other person sees it.  This is due to the fact that a rainbow has no physical presence, it is a purely optical phenomenon and its appearance. Its precise shape, arc, and width of its color bands will vary slightly.

What is a Rainbow for Kindergarten? 

Rainbow for Kindergarten

According to kids in kindergarten, the rainbow is a beautiful arc of colors that appears in the sky after a rain shower. Kids often encounter rainbows in their coloring books rather than in reality.

Final Words

Rainbows continue to inspire us for their captivating blend of science and beauty. They are a reminder of nature and the power of light to transform the ordinary into something extraordinary.

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