Snowflakes....up close and personal
 

This is absolutely amazing to me.....and quite stunning in its beauty.

http://www.its.caltech.edu/~atomic/s...tos/photos.htm

VERY cools shots... That must be a fun job... I can hear it now... "What do you want to do today? Oh I don't know, let's go to Aspen and collect some snow flakes. We can call it research... " :-)

Now that is pure beauty. Who knew a little water and a few degrees below freezing could create such art. Nice find man!

gah!! i don't understand!!! how can nature do that? something so simple and commonly occuring, yet so freaking beautiful! i just don't understand.

I saw this link on FARK too. It's very very cool.

Now I'm not really trying to start something here, but how, HOW can a person look at the amazing, intricate beauty of a snowflake, KNOWING THERE ARE NO TWO SNOWFLAKES ALIKE IN THE WHOLE WORLD, and not be totally totally blown away???

Furthermore, to suggest that each individual snowflake is the product of mere science and chance, or "mother nature", is so absolutely crazy to me...

I cannot look at these amazing beautiful creations and deny the existence of a Creator. I can deny that prompting, shove it down and cover it up with cold, unverifiable science, but it can never go away.

God Himself is manifest in those snowflakes, IMHO.

Those are gorgeous.
..and 6 is my favourite number, so that makes them especially neat.

Why is it 6?

mmm...science is beautyful. :)

the perfect wallpaper! thx!

Here's some rad info aboot the snowflakes.

How Do Snowflakes Form?

Snowflakes are a particular form of water ice. Snowflakes form in clouds, which consist of water vapor. When the temperature is 32° F (0° C) or colder, water changes from its liquid form into ice. Several factors affect snowflake formation. Temperature, air currents, and humidity all influence shape and size. Dirt and dust particles can get mixed up in the water and affect crystal weight and durability. The dirt particles make the snowflake heavier, and can cause cracks and breaks in the crystal and make it easier to melt. Snowflake formation is a dynamic process. A snowflake may encounter many different environmental conditions, sometimes melting it, sometimes causing growth, always changing its structure.

What are common snowflake shapes?

Generally, six-sided hexagonal crystals are shaped in high clouds; needles or flat six-sided crystals are shaped in middle height clouds; and a wide variety of six-sided shapes are formed in low clouds. Colder temperatures produce snowflakes with sharper tips on the sides of the crystals and may lead to branching of the snowflake arms (dendrites). Snowflakes that grow under warmer conditions grow more slowly, resulting in smoother, less intricate shapes.

* 32-25° F - Thin hexagonal plates
* 25-21° F - Needles
* 21-14° F - Hollow columns
* 14-10° F - Sector plates (hexagons with indentations)
* 10-3° F - Dendrites (lacy hexagonal shapes)

Why are snowflakes symmetrical (same on all sides)?

First, not all snowflakes are the same on all sides. Uneven temperatures, presence of dirt, and other factors may cause a snowflake to be lop-sided. Yet it is true that many snowflakes are symmetrical and intricate. This is because a snowflake's shape reflects the internal order of the water molecules. Water molecules in the solid state, such as in ice and snow, form weak bonds (called hydrogen bonds) with one another. These ordered arrangements result in the symmetrical, hexagonal shape of the snowflake. During crystallization, the water molecules align themselves to maximize attractive forces and minimize repulsive forces. Consequently, water molecules arrange themselves in predetermined spaces and in a specific arrangement. Water molecules simply arrange themselves to fit the spaces and maintain symmetry.

Is it true that no two snowflakes are identical?

Yes and no. No two snowflakes are exactly identical, down to the precise number of water molecules, spin of electrons, isotope abundance of hydrogen and oxygen, etc. On the other hand, it is possible for two snowflakes to look exactly alike and any given snowflake probably has had a good match at some point in history. Since so many factors affect the structure of a snowflake and since a snowflake's structure is constantly changing in response to environmental conditions, it is improbable that anyone would see two identical snowflakes.

If water and ice are clear, then why does snow look white?

The short answer is that snowflakes have so many light-reflecting surfaces they scatter the light into all of its colors, so snow appears white. The longer answer has to do with the way the human eye perceives color. Even though the light source might not be truly 'white' light (e.g., sunlight, fluorescent, and incandescent all have a particular color), the human brain compensates for a light source. Thus, even though sunlight is yellow and scattered light from snow is yellow, the brain sees snow as white because the whole picture received by the brain has a yellow tint that is automatically subtracted.

BEAUTIFUL !!! :)

in chaos there is order . . . isn't a snowflake an example of a fractal?

Sweetpea :)

Thanks for that! We had some snow this year and it was sooo cold that the flakes were very distinct and beautiful. What a nice link!!

I think this proves the existence of the DEVIL :-)

I believe there was a study that concluded that one in every two million snowflakes is not unique (or something along those lines).

Got no link, no source, no anything. I could have just pulled this out of my ass, but I'm pretty sure I heard this is true.


edit: Does that "snowflake" look like it went though about 500 photoshop filters to anyone else?

That link mentioned Wilson A. Bentley. I remember somewhere getting ahold of a children's book about him and read it to my class when we were discussion weather in science. I remember the back of the book had panel after panel of a bunch of his photographs. I think I remember something about him leaving the plates out in the cold outside so they wouldn't immediately melt the snowflakes when he tried to photograph them. It's been a few years since I read that. I should check and see if they have it at our library. I know my daughter would love it. Thanks for reminding me.

The book is called "Snowflake Bentley" by Jacqueline Briggs Martin. Caldecott Award 1999.