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

  • Thread starter Thread starter jollage
  • Start date Start date
  • Tags Tags
    Air Liquids
AI Thread Summary
Holding electrified liquids in the air is theoretically possible using strong external electric or magnetic fields. Water may not be suitable due to its properties, but other liquids like molten metals could work. The discussion references the Milliken Oil Drop Experiment and the concept of magnetic levitation, noting that frogs have been used in demonstrations due to their high water content. Successful levitation of water droplets is feasible, relying on surface tension, but requires extremely high magnetic fields of 10-15 teslas or more. Overall, while the concept is intriguing, practical applications face significant challenges.
jollage
Messages
61
Reaction score
0
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.
 
Physics news on Phys.org
What is an electrified liquid?
 
Bystander said:
What is an electrified liquid?
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.
 
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.
 
Bystander said:
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.
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.
 
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.
 
jollage said:
But no one has done this kind of experiments?

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

jollage said:
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.

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

Similar threads

Replies
6
Views
10K
Replies
16
Views
4K
Replies
17
Views
3K
Replies
1
Views
2K
Replies
3
Views
2K
Replies
32
Views
3K
Back
Top