Any gas volume vs field interaction?

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SUMMARY

The discussion centers on the interaction of gases, specifically oxygen (O2), with electromagnetic (E/M) fields and their potential to change volume. Participants explore the concept of electrostatic speakers as a means to produce sound through direct interaction with air. The conversation highlights the challenges of manipulating gases with E/M fields, suggesting that significant field strengths may be required. The inquiry also touches on the fundamental mechanisms, such as electrostatic repulsion, involved in these interactions.

PREREQUISITES
  • Understanding of electromagnetic field theory
  • Familiarity with gas behavior under varying conditions
  • Knowledge of electrostatics and dielectrics
  • Basic principles of sound production and acoustics
NEXT STEPS
  • Research "Electrostatic speakers" for sound production techniques
  • Explore "Gas behavior in electromagnetic fields" for detailed mechanisms
  • Investigate "Piezoelectric materials" and their applications in sound generation
  • Study "Electromagnetic field strength requirements" for gas manipulation
USEFUL FOR

Physicists, audio engineers, and researchers interested in the interaction of gases with electromagnetic fields and sound production technologies.

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

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