Saturday, February 22, 2014

APOD 3.6


What you see here is another amazing work of nature. A pileus iridescent cloud!

Yes, there is another cloud added to the many other sort and arrangements of clouds, but, if I say so myself, this is the prettiest. This cloud is made up of a thin group of water droplets that are around the same size (not all droplets of water are the same size in a cloud, some will collide and condense into bigger droplets, hence what causes bigger clouds and then rain) and diffract an array of colors of sunlight in different amounts.

What is cool about this, though, is that you can see this amazing color any day. All you have to do is go somewhere where the Sun is slightly out of view and view the reflection of the sky in water. In fact, the Sun has to be mostly hidden by thick clouds to let this event happen.

Another thing that can be seen in the photo is that there are unusual ripples above the pileus or cap cloud. This is actually an indication that the lower cloud is getting larger and that a storm is brewing. Unfortunately, as fast as it comes, it disappears in a couple of minutes.

This picture was taken in Zimbabwe before sunset, but don't worry, you don't have to go all the way across the world just to see something like this. You just have to be at the right place at the right time. And do I have to mention again? Keeping looking up!

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