[mun]

Hi,

Is there a widely available liquid or gas out there that'd rapidly expand (and subside) upon an "irritation" created by a simple electric circuit? For example, a tiny spark, a voltage change, a magnetic field change etc. Preferably the gas doesn't heat up substantially.

Thanks

[fledarmus]

You might check the "How Airbags Work" section here... http://en.wikipedia.org/wiki/Airbag