Hacked Gadgets Forum

February 8, 2013

High Speed Spinning Plasma Ball

at 3:19 pm. Filed under Crazy Hacks


Sometimes you just ask what will happen if… In this case it is what would happen if you Spin a Plasma Ball at 4000 RPM! Turns out the ball pattern locks into a strange pattern, the plasma effect also continues to spin after the actual ball comes back to rest. Why does this happen? Not sure.

I am sure we will see more of this rig in the future since Mr Fix it Rick is building a Keshe Plasma Reactor with it.


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5 Responses to “High Speed Spinning Plasma Ball”

  1. Alan Says:

    It happens because the gasses that have been ionized have a much easier time maintaining ionization, when you spin the ball at a very high speed the gas that moves the least is the air in line with the center of rotation.

  2. Hephaïx Says:

    When the ball is spinning, the gas in it is spinning due to fluid friction. The gas is pushed outward from the centrifugal force so there is a pressure gradiant in the gas ( ++ — ++ ). The low pressure gas is easyly ionised than the (relatively) hight one.

  3. gege Says:

    Its like a pulsar ! Energy ejected out on the poles because of the rotating speed
    I guess the gas continue to spin because of the friction with the inside of the ball (like does the clouds/atmosphere with the earth)

  4. Whatnot Says:

    Interesting how the comments here are more scientific and sensible than the guys doing the experiment.

  5. Montaray Jack Says:

    I know I’m necroposting but there’s actually a few interesting things going on in a plasma globe, and a rotating frame of reference always makes for interesting hydrodynamics.

    The gases are probably rarefied enough that their mean free path is probably much greater than the diameter of the globe. Rarefied gasses travel in straight lines until they hit something, and when they do, they bounce off at a random vector, providing whatever the molecule hits is not a regular crystal of the right inter-atomic distances where it would act more like a mirror, angle of incident and refraction…

    Some rather non-intuitive things happen in fluids in rotating frames of reference. Now as presented, this “experiment” doesn’t rotate for long enough to even put water into rigid body rotation, let alone a gas. I’m not real sure you could even put a rarefied gas into rigid body rotation, so the experiment would probably be better done with one of the dangerous high voltage 1 atmosphere globes.

    The ionized gasses behave differently than the neutral gases, the charge would make the plasma behave a little closer to a idealized fluid.

    The question asked by these guys in this video is not actually an unreasonable one, and I am unsure of a real answer. It might be educational to do this experiment better.

    Barry Belmont’s reposting of the NSF/National Committee for Fluid Mechanics films:
    Rarefied Gas Dynamics http://www.youtube.com/watch?v=T46Wb2d_dV8
    Rotating Flows http://www.youtube.com/watch?v=Ans3tnvMyTk
    Magnetohydrodynamics http://www.youtube.com/watch?v=QArcTylNooQ
    MIT notes on the films, http://web.mit.edu/hml/notes.html

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