What kind of phenomenon is fog rainbow?

Fog rainbow is a weather phenomenon similar to rainbow, which is formed by the reflection and refraction of sunlight by water molecules. When it appears in the air, it looks like an arched fog door? Fog rainbow is white, sometimes called "Bai Hong", because the water droplets in the water are very small, and the diffraction of light becomes very important, thus covering the color?

In the inner layer of the rainbow, light refracts in a clear and definite way? Fog rainbow is formed by smaller water droplets reflecting a wider range of sunlight, so fog rainbow sometimes appears light blue and reddish? This strange sight often appears in the mountains? In mountainous areas and cold sea fog, it occasionally appears at sunrise accompanied by fog?

20 10 in may, Spanish photographer Alex Tudorica photographed the fog and rainbow landscape in the canary islands of Spain? 20111February, Russian amateur photographer Sam Dobson photographed a rare fog rainbow during an arctic expedition.