On Dec 29, 2008, at 1:19 PM, Francis Drouillard wrote: > At 11:09 AM 12/29/2008, Brian Lawson's fingers tapped: > >> On Dec 29, 2008, at 11:59 AM, Francis Drouillard wrote: >>> At 09:47 AM 12/29/2008, Bruce Johnson's fingers tapped: >>>> On Dec 28, 2008, at 10:16 PM, Brian Lawson wrote: >>>>> Here's my latest photo. It has been a very productive couple of >>>>> weeks for photography. >>>>> >>>>> <http://brianspics.wittybanter.org/LocalScene/pages/ForbiddenValley.html >>>>> > >>>> >>>> Wow, freaky. I suspect it takes pretty specific conditions for >>>> ice to grow that way....just the right temp and humidity and no >>>> wind. >>> >>> I suspect conditions must be near the triple point for water, >>> namely 0.16 degrees C and a total pressure near one atmosphere. >> >> We are at roughly 4,000 feet here so I'm not sure how we would get >> to one atmosphere of pressure. >> -- >> Brian > > Now you're really pressing the limits of my recall regarding the > triple point. The vapor pressure needs to be about 1/100th > atmosphere, but the total pressure can be much higher, up to one > atmosphere. > > Or something like that. If I recall correctly, water is one of the > only materials with a triple point that can be found under natural > atmospheric conditions. > > In any event, that is one awesome image capture.
Thanks Francis, we thought so too. :) -- Brian --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "StrataList-OT" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/StrataList-OT?hl=en -~----------~----~----~----~------~----~------~--~---
