Water in a magnetic field

  • Thread starter jWald
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How exactly does water behave in a magnetic field? I've seen pictures of a boat that uses electromagnetic rail technology to move across water, but I still don't fully grasp it.

Also, does this behavior change when temperatures rise or fall?
 

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  • #2
NascentOxygen
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I've seen pictures of a boat that uses electromagnetic rail technology to move across water, but I still don't fully grasp it.
Hi jWald. http://img844.imageshack.us/img844/5826/rotwel.gif [Broken]

Magnetohydrodynamics? It involves passing a lot of current through sea water in the presence of a strong magnetic field. So having a nuclear reactor aboard your ship to supply all that electricity is practically essential. Google it and you'll find as much information as you can handle.
 
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  • #3
I don't think that water is affected by magnetic fields- it would have to be ionized, or polarized.
 
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What about salt water?
 
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I don't think that water is affected by magnetic fields- it would have to be ionized, or polarized.

Seawater is always heavily ionized. If you send a current through the water, a magnetic field can excert a force on it.
 
  • #6
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And the reaction force could cause the type of propulsion the OP was wondering about?
 

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