[AR] Re: scuba or astronaut gas temperature question

  • From: Henry Vanderbilt <hvanderbilt@xxxxxxxxxxxxxx>
  • To: arocket@xxxxxxxxxxxxx
  • Date: Sat, 22 Aug 2015 06:08:29 -0700

On 8/22/2015 3:01 AM, John Dom wrote:

Related: throwing chunks of solid carbon dioxide in water makes it
bubble with sublimated cold CO2 vapor. But why does that gas produce a
**lingering** fog on rock&roll stages?

Been a while since I had anything to do with a rock&roll stage, but I'd speculate the dry-ice-in-water fog lingers for the same reason ocean fog does: It's a water-saturated air mass that's been cooled below its dew point, so small-enough-to-stay-suspended water droplets precipitate. The droplets can't evaporate again until the air mass they're in has warmed up. (Even then, the evaporation must take some finite time.)


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