Saturday 13 November 2010

Snow

This is truly my ideal of heaven!


Snowing from David Michael Lamb on Vimeo.



I have become obsessed with snow this year....I have always loved snow and winter but im wearing snowflake earrings a necklace and bracelet I have even painted snowflakes on my finger nails! I think I have snow madness :/. I have been becoming increasingly irritated that there is not already piles of snow outside and im jealous as hell that Scotland is already covered in snow!! I feel it unfair :(.....I talk about snow and it snowing constantly ( jeez I must be annoying to be around) I cut snowflakes out of paper at work, I draw them, I have even painted a painting of them. What in the world is going on with me??!! Ok yes I defiantly have snow madness. I think I need professional help.



Science of Snowflakes

By David Ropeik

It’s widely believed that no two snowflakes are alike — but it turns out that there are various forms of snowflakes, making the tale a bit more complicated. For better or verse, here’s the whole story, including the lowdown on rain, hail and sleet.

Because of the way that they grow,
Each frozen white crystal of snow
Is thought in our mind
To be one of a kind.
But guess what: It just isn’t so.

When H2O molecules freeze,
Hexagons form with great ease.
Molecular bonds
Like magical wands
Form the six-sided shapes snowfall sees.

Dendrite flakes, with their six crystal wings,
Are among nature’s loveliest things.
These flakes are unique,
No two can you seek
Just the same in the white winter brings.

But at temperatures lower or higher
In air that’s more humid, or drier,
Different shapes grow:
Less unique flakes of snow
That develop much simpler attire.

Needles, and Columns, and Plates
Are flakes with identical mates.
Like wheels on a bike
These flakes look alike.
Each type has quite similar traits.

But the turbulent winds of a storm
With temperatures both cold and warm
And mixed moisture sources
Create varying forces
That cause complex mixed crystals to form.

So while some flakes can all look the same,
Most are not nearly so tame.
They’re all based on a “hex,”
But they’re just as complex
As the Nature from whence each one came.

Now raindrops, and sleet, even hail
Are part of a simpler tale:
Though they vary in size
Like a bunch of french fries
Each forms the same way without fail.

Big drops fall from moist warmer air,
Or when smaller drops join, way up there.
Hailstones will grow
When strong updrafts blow.
A thunderstorm has those to spare.

Sleet’s just a raindrop that froze
Before it crashed into your nose
Wet rain that falls
And then freezes on walls
Is freezing rain. Traffic it slows.

Each type of cold precipitation
Has its own origination.
We suffer together
The wet winter weather
No matter our town, state, or nation.

Source: http://www.labgrab.com/users/labgrab/blog/science-snowflakes
More reading http://www.its.caltech.edu/~atomic/snowcrystals/

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