what does it mean when the sun is incircled with a rainbow colour?

Question

want to know why there is a rainbow colour around the sun

Answer 1

You've been staring at it too long?

Answer 2

It means there is mist in the air (often a thin cloud layer). A rainbow will form any time the light from the sun hits the water vapor particles at just the right angle. The typical rainbow arcing across the sky occurs after a late day rain shower, when the sun's rays strike the remaining droplets at that specific angle (relative to the viewer). If the sun is high in the sky, that particular angle will cause a complete circle to form in the thin clouds.

Answer 3

It means there is mist in the air (often a thin cloud layer). A rainbow will form any time the light from the sun hits the water vapor particles at just the right angle. The typical rainbow arcing across the sky occurs after a late day rain shower, when the sun's rays strike the remaining droplets at that specific angle (relative to the viewer). If the sun is high in the sky, that particular angle will cause a complete circle to form in the thin clouds.

Answer 4

The circle with rainbow colour is called a Halo or Corona.Halo is caused by the refraction of the sun's light rays by ice crystals which are present in the cirrostatus clouds.A halo is believed to be an indication of approaching storm even though actually it is not so.
The carona is formed by the diffraction of the light by the water drops present in altocumulus clouds.A carona is ditinguished from a halo by its reversal of colour sequence,the red of the halo being inside,that of the carona outside.If the size of the water drops decreases the carona size will increase.

Answer 5

The light coming from the sun refracts through water particles in the air in a certain way, creating a halo of rainbow. This is why you see rainbows after it rains.

Answer 6

If it is a coloured ring detached from the sun it is a 22° halo caused by refraction through ice crystals in cirrostratus cloud. There are pictures and descriptions here
http://www.meteoros.de/arten/ee01e.htm

If the coloured rings are in cloud close to the sun, it will be a corona caused by diffraction through water droplets in altocumulus cloud. Again there are pictures here:
http://www.meteoros.de/kranz/kranze.htm