Cloud Rainbow

I’m not sure if this was caused by rain in the clouds or ice but it was pretty cool…

DSC_8314 DSC_8330

Advertisements

6 responses to “Cloud Rainbow

  1. What a fascinating effect. I guess that it’s some kind of diffraction of the light, but I have no idea exactly how it was formed. I definitely agree that it’s a really cool effect (and you did a nice job capturing it).

  2. Hi, Ed!

    That’s a sundog. Wonderful pictures of it! Here’s info from Wikipedia:

    Sundogs are commonly made by the refraction of light from plate-shaped hexagonal ice crystals in high and cold cirrus clouds or, during very cold weather, these ice crystals are called diamond dust, and drift in the air at low levels. These crystals act as prisms, bending the light rays passing through them with a minimum deflection of 22°. If the crystals are randomly oriented, a complete ring around the sun is seen — a halo. But often, as the crystals sink through the air, they become vertically aligned, so sunlight is refracted horizontally — in this case, sundogs are seen.

    As the sun rises higher, the rays passing through the crystals are increasingly skewed from the horizontal plane. Their angle of deviation increases, and the sundogs move further from the sun.[4] However, they always stay at the same elevation as the sun.

    Sundogs are red-colored at the side nearest the sun. Farther out the colors grade through oranges to blue. However, the colors overlap considerably and so are muted, never pure or saturated. The colors of the sundog finally merge into the white of the parhelic circle (if the latter is visible).

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s