Sounds like data from Kenneth Libbrecht at www.snowcrystals.com... He's done a lot of research on the conditions that make snow crystals take form.
In practice, snow crystals only _persist_ long enough for photography if the air temperature at ground levels is colder than -5° C (23 F). Another practical constraint is that if temp. is too close to 0° C (32 F), the snow tend to fall as big clusters of crystals or crystal fragments; not at all photogenic. :-( Jostein 2008/2/1, Bob Sullivan <[EMAIL PROTECTED]>: > Article in the Chicago Tribune newspaper today with charts of > temperatures versus type of snow crystals formed - columns, flakes, > etc. They claimed 3-4 phases from -5 degrees F. to 32 F. I was > surpried. > Regards, Bob S. > > On Feb 1, 2008 3:17 PM, AlunFoto <[EMAIL PROTECTED]> wrote: > > With the recent trend of dedications, this one should go to Mark Cassino. > > :-) > > > > The lack of Right Temperatures for snow crystals has made me rummage > > through the archive. Here's one thing I found: > > > > http://alunfoto.blogspot.com/2008/02/tarballs.html > > > > > > -- > > http://www.alunfoto.no/galleri/ > > http://alunfoto.blogspot.com > > > > > > -- > > PDML Pentax-Discuss Mail List > > [email protected] > > http://pdml.net/mailman/listinfo/pdml_pdml.net > > to UNSUBSCRIBE from the PDML, please visit the link directly above and > > follow the directions. > > > > -- > PDML Pentax-Discuss Mail List > [email protected] > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. > -- http://www.alunfoto.no/galleri/ http://alunfoto.blogspot.com -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
