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<p>[QUOTE=&quot;-jeffB, post: 2938275, member: 27832&quot;]My knee-jerk response is &quot;no&quot; -- it&#039;s a gas jet, and I can&#039;t imagine it would be easy to focus onto a small area. But I&#039;ve got <i>really</i> low confidence on that. Maybe they can squirt it out of a needle, and maybe it recombines so quickly that the effect <i>can</i> be highly localized.</p><p><br /></p><p>Guys, if you talk me into hacking together something to try this, you&#039;re going to get me in <i>so</i> much trouble. It&#039;s been several decades since my last &quot;unplanned indoor lab-related prompt temperature/pressure excursion&quot;, and I&#039;d promised myself -- and, implicitly, my insurance company! -- that I was out of that line of experimentation...[/QUOTE]</p><p><br /></p>

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