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How Many Colors are in a Rainbow

There is nothing more spectacular than the sight of a rainbow after a storm. They are not only colorful and pretty to look at, but they are seemingly mysterious objects. The rainbow has long been connected with the bible as God’s sign that he will never flood the whole Earth again. There are also stories from many other ancient cultures that tried to explain the appearance of a rainbow. Today we know that the occurrence of a rainbow happens when the Sun shines on water droplets in the Earth’s atmosphere. They are most commonly known to occur after a rain storm, but they can also form in mist (such as a waterfall), spray and dew.

The amount of visible colors of a rainbow have been debated over the centuries, and it is widely accepted that everyone sees slightly different colors. However, we now know that a rainbow is actually made up of a continuous spectrum of colors. Even though the human eye sees bands in a rainbow, they don’t actually exist.

How many colors are in a rainbow?
The closest answer to the amount of colors in a rainbow comes from what scientists believe most people (excluding those with color blindness) see when they look at a rainbow. There are 7 colors that most people can see in a rainbow and they are:
Red, orange yellow, green, blue, indigo and violet.
School children are often taught the mnemonic Roy G. Biv to help them remember the colors. This is often combined in a song to help children remember. In some countries the reverse mnemonic VIBGYOR is used.

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