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Water stuff

  1. May 10, 2003 #1
    can't an electro-magnetic field be used to separate two liquids?
    For example: petrol and water(as they have different magnetic properties)

    i'd be grateful if someone helps me with this.
     
  2. jcsd
  3. May 10, 2003 #2

    Ivan Seeking

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    Things like this usually require more energy than is feasible. But, perhaps in some cases it is possible and is even done. You might check into magnetohydrodynamics for related discussions.
     
  4. May 18, 2003 #3
    How about a centrifuge?
    (BTW, those usually use magnetic fields to spin the motor.) But it's much easier because you rely on the difference in density instead of the difference in electro-magnetic properties.
     
  5. May 20, 2003 #4
    centrifuge can ofcourse an easier solution but it cannot be used efficiently when the amount considered is very large.Ive been doing some studies on magnetohydrodynamics(thanks Ivan for that was the first time i'd heard about it).
     
  6. May 20, 2003 #5

    Ivan Seeking

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    I wonder how you could make a submarine really quiet? Hmmm.
     
  7. May 20, 2003 #6
    Are you looking for a better way to clean up major oil spills on the ocean?

    Seems off topic, but I'll bite.
    How about if you make your sub with 2 hulls, a thick one outside for the pressure and armor, and an inside skin with a gap between the two. You create a vacuum between the two skins with any supports or transmissions made with an ultra-rigid material. That way the vacuum can't propogate any internal sounds and the ultra-rigid material doesn't vibrate. I'll leave it up to you to design this ultra-rigid, non vibratable material.
     
  8. May 20, 2003 #7

    Ivan Seeking

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    Not at all. I dare say no more. :smile:
     
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