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I My cloud chamber didn't make any tracks...

  1. Nov 17, 2016 #1
    Greetings all,

    I finally made a cloud chamber using an old aquarium and dry ice. Now, I got the expected result to happen, with a fine mist falling from the top like snow, but didn't see a single particle track. Any ideas why this might be? I have some guesses, but wanted someone with experience to help me troubleshoot.

    My guess would be that the volume of the chamber was too large compared to the amount of dry ice used, making the chamber cold, but not cold enough. It could also be that air was entering the chamber, as I could definitely see convection in the mist.

    I have a few videos, which I'll try to upload just for fun.

  2. jcsd
  3. Nov 17, 2016 #2
    I uploaded a low-res copy of the video here:

    The plate at the bottom of the tank is Fiestaware. I figured I'd give myself the best shot I could at 'seeding' the chamber with radiation. It is absolutely the most energetic beta source I have - it makes my Geiger counter go nuts. Still nothing.

    Oh, and that's my son singing in the background. At first I thought he was singing "Ode to Joy", but then I think after it might be Star Wars...
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