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Any gas volume vs field interaction?

  1. Apr 26, 2004 #1
    I wonder if there are any gases that react to applied E/M field changes by changing their volume? Apart thermal stuff of course. I assume that piezo electrics apply to solids, but how about gases?
     
  2. jcsd
  3. Apr 27, 2004 #2

    Bystander

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    O2 in a magnetic field (probably some others); any gas in an electric field (remember the experiment in which dielectrics are "pulled" into the field?). Anything in particular you're hunting?
     
  4. May 9, 2004 #3
    hmm, weird. I have checked this thread, but saw no answer to it. Now I see it was answered next day. weird..

    Thanks for your hint. I'm thinking about how would it be possible to produce audible sound with as direct interaction with air as possible.
    What is the mechanism with O2? Electrostatic repulsion? or something else?
     
    Last edited: May 9, 2004
  5. May 10, 2004 #4

    Bystander

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    You might browse "electrostatic speakers" for particulars on a nearly direct interaction with air. Driving air itself with E/M fields is going to take field strengths that might be beyond handling.
     
  6. May 21, 2004 #5

    Gokul43201

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    How about clapping your hands ? Isn't that direct interaction with the air.
     
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