Snowmaking

Recently I spent the day making ice crystals in the kitchen. The relatively simple experiment requires little more than a plastic bottle, some dry ice, and a lot of patience!

In short you surround the bottle with dry ice to lower the temperature to the crystal forming region ( 0 to -20), have a source of water within the bottle – a wet sponge – to saturate the air within the bottle, and a point on which the crystals can form – Here I used a fishing line running through the middle of the bottle.

Apparatus

Early signs of crystals

At the 10 minute mark the first signs of crystals were materialising

The First Ice Crystal

A further 10 minutes into the experiment and proper flakes began to form

Crystal formation on growth chamber sides

At the 45 minute mark better crystals had formed on the sides of the growth chamber than on the nylon thread.

An hour into the  experiment and the crystals had started to grow radically and lost much of the symmetry found in the earlier stages. I put this down to the varying conditions brought on by continuously opening the chamber to take pictures, so i decided to repeat the experiment under more controlled conditions and left the grown chamber untouched for an hour. This allowed the development of a nicely symmetrical fernlike dendrite branch (nearly 1cm long!!):

1 comment
  1. Great work Josh! Thanks. Did you manage to draw this in 3D and laser-cut some models? Very curious what kind of Architecture will emerge from this…

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

%d bloggers like this: