From: gdpusch@NO.xnet.SPAM.com   
      
   henry@spsystems.net (Henry Spencer) writes:   
      
   > In article <3f64d304$0$173$edfadb0f@dread11.news.tele.dk>,   
   > Jens Kieffer-Olsen  wrote:   
   >>>> I take it that gravity on Mars being a mere 38% of that in the   
   >>>> experiment has little bearing on the evaporation rate?   
   >>> Very little.  And as a practical matter, it's virtually impossible to   
   >>> reproduce that anyway...   
   >>   
   >> Airplanes in free fall are used to produce brief periods of zero   
   >> gravity, so why not let a slight trust emulate .38G?   
   >   
   > No need for a slight thrust; emulating lunar or Martian gravity is just   
   > a matter of flying a slightly shallower parabola.  It's been done   
   > occasionally.  But the available time at reduced G is too short for   
   > some things; I think it would be quite a trick to get measurements of   
   > things like this in the time available.   
      
   Moreover, there is ABSOLUTELY NO REASON to believe reduced gravity should   
   have any effect on the evaporation rate of water, any more than it would   
   affect the boiling point or freezing point of water.   
      
   Gravity is quite simply UTTERLY IRRELEVANT to any process governed by   
   microscale physics. Gravitation is only important when bodies are large   
   and/or all other accelerations are small --- neither of which are true   
   of individual molecules of water.   
      
      
   -- Gordon D. Pusch   
      
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