On the island of Tidore, one of the Moluccas in Indonesia, residents recently captured a fascinating natural phenomenon: a rainbow cloud, also called an iridescent cloud.
These spectacular clouds have a variety of colors that appear in a dazzling spectrum. They are relatively rare and are often confused with rainbows, even though they have different origins.
The residents of the island filmed the extraordinary event.
The iridescent colors in the clouds are caused by the diffraction of light by fine water droplets. When sunlight hits the clouds, it is refracted and reflected by the tiny water droplets. This involves dividing the light into different colours, similar to a rainbow, but on a much smaller scale and often with subtler shades. This phenomenon usually occurs when the clouds have a special structure and a suitable droplet size to scatter the light in such a way.
Amazing color range
The variety of colors seen in iridescent clouds is determined by the size of the water droplets. Smaller droplets produce bluish and greenish tones, while larger droplets can dominate red tones. These different droplet sizes create the amazing range of colors that manifest in the clouds.
Combined with the right weather conditions and the right time of day, such clouds can produce an impressive and rare spectacle that delights not only the residents of Tidore but also observers around the world…
Source: Krone

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