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Have you ever wondered about the curved rainbow that sometimes appears in the sky after a rainfall? It is a fascinating natural phenomenon that has been captivating people for centuries. A curved rainbow, also known as a circular rainbow or a supernumerary rainbow, is a rare type of rainbow that appears as a full circle instead of an arc. They are a beautiful sight to behold and often leave people in awe of the beauty and power of nature.

What Causes a Curved Rainbow?

The curved rainbow is caused by the same process as a regular rainbow. When sunlight passes through raindrops, it gets refracted and dispersed, creating the colors of the rainbow. However, in the case of a curved rainbow, the light is refracted twice before exiting the raindrop. This results in a secondary, fainter arc above the primary one, creating the full circle effect.

When and Where Can You See a Curved Rainbow?

Curved rainbows are rare, and you can only see them under specific conditions. They usually appear during a heavy rainfall when the sun is low in the sky, and the clouds are located opposite the sun. They can occur anywhere in the world where these weather conditions are met, but they are more likely to occur in tropical areas where there is a high concentration of raindrops in the air.

What are the Colors of a Curved Rainbow?

The colors of a curved rainbow are the same as a regular rainbow: red, orange, yellow, green, blue, indigo, and violet. However, the curved rainbow appears much fainter and less distinct than its arched counterpart. The colors may also be shifted slightly due to the additional refraction that occurs to create the full circle effect.

A curved rainbow is a stunning and rare natural phenomenon that is a testament to the beauty and complexity of nature. While they may be infrequent, if you do get the chance to witness one, take the opportunity to marvel at the beauty and wonder that is a curved rainbow.