How are Rainbows Formed and What are seven colours of the rainbow?

Rainbow Formation Theory

Rainbow Formation

What is a rainbow?

A rainbow is a natural phenomenon caused by the refraction and reflection of light at droplets of water, which leads to the appearance of a range of light from the skies.

Rainbow in the sky appears in the kind of a bow that is multicoloured. When due to sunlight and water, rainbows show up on the face of the sky that’s directly contrary to the sun.

They are sometimes full circles occasionally, but also to the normal viewer, just the arc will probably be observable.


How Rainbows Are Formed?

The arrival of every rainbow starts with countless tiny rain droplets. The rain droplets function as a sort of reflector of light.

White light enters leaves from rain droplet. Without infinite rain droplets, a rainbow wouldn’t happen. You would find a few colours if you had a few rain droplets. That is why rainbow looks after a rainstorm.

Rainbows are formed due to total internal reflection in water droplets. Every rain droplet has a role in the creation of this rainbow.

How Rainbow formed

Sunlight enters the rain droplet at a particular angle and also the rain droplet divides the white light into many unique colours.

This angle is a dimension between sunlight and your eye. What colour is refracted is determined by the angle, that’s the angle that the sun strikes the rear of the rain droplet.

Red light bends the least, leaving the rain droplet at a 42-degree angle, even whereas Violet light bends the maximum, leaving the rain droplet at a 40-degree angle.

All the different colours of the rainbow leave the rain droplets at an angle between 40 and 42 degrees, thus creating the colours of the rainbow ROYGBIV, this order never changes.

Rainbow Formation

Every rain droplet reflects all colours at a specific time, but just one colour comes back to your own attention, requiring million of rain droplets to make a rainbow.

Since the rain droplets fall through the sky, the colours of the spectrum have been reflected and refracted which are continuously shifting. This is the reason for How are Rainbows Formed.


What is the Shape of Rainbow?

Facts about Rainbows form a complete circle, but just half is observable. The Department of Physics and Astronomy, Arizona State University has a theory about the rainbow circle, so we see just an arc.

Half Rainbow

The reason which causes the rainbow to have around formation is how rain droplets fall. The rain droplets don’t fall is a horizontal sheet, but they have a tendency to fall at different intervals and rates.

On some occasions, you’ll be able to view a complete circle round in your garden.
The ideal time and location to search for a rainbow that you require bright sunshine for your back and rain clouds beyond in the distance in the path of the shadow.

When it’s later than 4:30 in the day or earlier than 8:30 in the morning in this situation are an excellent chance you’ll have the ability to find a rainbow in the skies.

Other areas you will see rainbows shaped are fountains, even in the sea as the waves crash against the stone which makes a mist from the air, waterfalls, sprinklers and mist out of a garden.


What are the colours of the rainbow?

The colours of a rainbow would be those found in the colour spectrum of white light since it divides.

There seven colours of rainbow in sequence are red, orange, yellow, blue, green, indigo and purple.Rainbow Colors



The rainbow colors list of 7 colours is seen when the sun hits the water droplets. The colours of light slow down – based on their frequency since the suns ray moves to water.

Since the purple light enters the raindrop, it falls at a sharp angle. On the ideal side of the water droplet, a few lights are pulled back into the atmosphere, while the remainder reflects backward.

Raindrops which are high in the skies distribute light so that just the red light is visible to the viewer’s eye. So that a viewer sees a spectrum of various colours.

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Written by DJ

A passionate Digital Marketer with years of experience.

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