How to make a real rainbow in 1 minute?

You probably wondered at least few times what is at the end of the rainbow, how it arises and, above all, why it is so colorful. The rainbow is an optical and meteorological phenomenon that can be seen in the sky as a multicolored arc. It is a result of the splitting of sunlight due to the fact that when it getts into the atmosphere and meets drops of water (raindrops) on its way that work like a prism, white light is split  into a multi-colored wonder called rainbow.

Why do we see different colors? Because each color corresponds to a different wavelength and that information is decrypted by our eyes and brain as colors..

But can you see the rainbow on a sunny afternoon or even better make one at home?

Yes! We have several ways for you to make a rainbow at home!

Let`s get to work shall we?

How to make a rainbow from a mirror?


  • instruction on how to make rainbow at homea flashlight*
  • mirror
  • bowl
  • water
  • white sheet (optional)


  1. Pour water into a shallow dish.
  2. Insert the mirror so that it rests against one of the sides of the dish.
  3. Aim the flashlight at the part of the mirror submerged in water.
  4. Maneuver the light. A rainbow will appear on the wall or paper.

* The best effect will be ensured by using a flashlight with an incandescent bulb.


How to make a rainbow from a CD?


  • a flashlight
  • CD
  • optional white card


  1. Aim the flashlight at the CD.
  2. Maneuver the beam of light in such a way that the reflection falls on a flat surface. Here’s a portable pocket rainbow!
  3. Aim the flashlight at the part of the mirror submerged in water.
  4. Maneuver the light. A rainbow will appear on the wall or paper.


How to make a rainbow from droplets?


  • flower sprinkler 🙂


Warning! This method works only on a sunny day.

  1. Stand back to the sun.
  2. Pour the sprinkler straight ahead.
  3. Watch how rainbow colors appear on the water drops. Note that its size is different depending on whether you are looking at it from a distance or from a distance.

What does science say about rainbow?

The creation of the rainbow is due to several facts. Let’s start with the fact that light can often be treated as waves. White light is really light, which consists of many waves of different wavelengths – for example: shorter waves are responsible for purple than for red. Under certain conditions, by passing white light through some material (glass, crystal, water or even air), we can separate these waves in space – it is thanks to this phenomenon that a rainbow is created, i.e. light split into beams of different color.

It’s important to remember that the colors of the split light are not random and follow each other in a certain order.

You can find more detailed information about our topic in this cool article.

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