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Thread: Supercooled water ice crystal formation

  1. #1 Supercooled water ice crystal formation 
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    Hello all, I'm a video producer looking to recreate something I saw on youtube for a project i'm working on. I have been researching for a week or so and can not recreate what I see. Basically I need to produce ice crystals on a flat plain to do macro video on. This video shows exactly what I would like to do. ANY suggestions would be awesome!!!

    supercooled water ice crystal formation - YouTube

    Thanks,
    Derek


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  3. #2  
    Comet Dust Collector Moderator
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    First question is do you understand what supercooled means?


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  4. #3  
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    I belive it means water that is cooled below freezing and yet not frozen. However you need purified water with no impurities to do this.
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  5. #4  
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    Good. The key to creating the images in the youtude video was I suspect the fact it was a very thin sheet as well. That's very difficult to do without causing enough disturbance to start the ice nucleation process. My guess would be it took a good number of attempts for that to work.

    Now creating similar patterns on a surface would require a different process. It requires a very cold surface, and just the right humidity conditions, most likely with perfectly still conditions. I don't believe it involves supercooled water, but rather a precise rate of deposition of vapor on the surface. I could be wrong about that, but it's my best educated guess.

    I know I only see patterns of interest like that once every other winter season on my car windows; they are so rare I try and take a picture. I think I have one around here somewhere, I'll see if I can find it. I'll then check my weather records to see if I can give you an idea of the conditions on that night.

    It will take me a little while, and I have a mega busy day tomorrow, so I'll see what I can do as soon as I can. In the meantime, you might try researching the topic of frost since I believe that's where the answer lies for what I think you are trying to do.

    Wayne

    Try this link, the top images are of window frost:

    http://www.its.caltech.edu/~atomic/s...rost/frost.htm
    Last edited by MeteorWayne; March 23rd, 2012 at 11:42 PM.
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