Monday, March 10, 2008

Snow Crystals

The delicate crystal snowflakes form thousands of feet above the ground in winter clouds that contain super cooled water droplets. As the snowflake grows larger, it eventually settles to the ground and lands in a soft white winter blanket.

So why do the clear crystals look white when piled high on the ground? Well, the snowbank you see is actually a whole bunch of individual ice crystals piled together. When a light photon enters the snowbank, it goes through an ice crystal on the top, which changes its direction slightly and sends it on to a new ice crystal, which does the same thing. Basically, all the crystals bounce the light all around so that it comes right back out of the snow pile. It does the same thing to all the different light frequencies, so all colors of light are bounced back out. The "color" of all the frequencies in the visible spectrum combined in equal measure is white, so this is the color we see in snow, even though it is not the color we see in the individual ice crystals.

God often uses the little things of His world to show us how big He is. The next snowfall you experience, grab a magnifying glass and view creation in a whole new light.

He sends His orders to the world—how swiftly His word flies!
He sends the snow like white wool; He scatters frost upon the ground like ashes.
He hurls the hail like stones. Who can stand against His freezing cold?
Then, at His command, it all melts. He sends His winds, and the ice thaws. Psa 147:15