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Would it be possible to hold electrified liquids in the air?

  1. Dec 13, 2014 #1
    Hi,

    Would it be possible to hold electrified liquids in the air? There is an external electric field applied to the liquids. What kind of liquid must it be? I guess water wouldn't do the job.
     
  2. jcsd
  3. Dec 13, 2014 #2

    Bystander

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    What is an electrified liquid?
     
  4. Dec 13, 2014 #3
    I was thinking something like molted iron or metal, that's also my question, I'm not sure what it could be. I want to know whether the liquid could be held up only by the magnetic field or electric field.
     
  5. Dec 13, 2014 #4

    Bystander

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    You might want to hunt down the "Milliken Oil Drop Experiment." Magnetic levitation using attractive and repulsive effects has been applied in a variety of apparatus, "spinning rotor gauges" for vacuum systems. For liquids? Frogs levitating in high magnetic fields are a popular gimmick in laboratory public relations, and are arguably liquid.
     
  6. Dec 13, 2014 #5
    Thank you Bystander. These seem very interesting. I checked quickly the levitating frog, I read "...Frogs are convenient (for the experiments) not only because they have a high water content, which is a good diamagnetic material....", so it seems convinced that if one applies a strong enough magnetic field to some volume of water, the water could be held in the air, is it right? But no one has done this kind of experiments? I am picturing in mind some volume of water held in the air by the magnetic field, and then (by turning off the magnetic field) falls down.
     
  7. Dec 13, 2014 #6

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    Should be able to levitate a water droplet and depend upon surface tension to hold the droplet together. Frogs appear to be more fun for public relations purposes.
     
  8. Dec 13, 2014 #7

    Drakkith

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    Of course they have. http://en.wikipedia.org/wiki/Magnetic_levitation#Diamagnetic_levitation

    It's possible. The problem is that you need extremely high magnetic fields, something like 10-15 teslas or more.
     
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