My memory of high vacuum work is that you need to pump for 4 hours at 300C to remove the water monolayer from glass. On top of the that water monolayer is another water monolayer that comes off more easily, and on top of that another………..
cheers, Neville Michie > On 9 Jun 2017, at 10:57 AM, Richard (Rick) Karlquist <rich...@karlquist.com> > wrote: > > > > On 6/8/2017 5:08 PM, Bob kb8tq wrote: >> Hi >> In this case hydrogen + oxygen (like from oxidized metal) goes to H20. You >> very much do >> not want water running around inside your crystal holder… Helium is inert. >> Bob > > Exactly right Bob. The 10811 guys used to go nuts > about keeping water out of their vacuum system. > There were certain temperatures known as "water > points" at which some water was released. > The retained water was in spite of the temperature > already being above 100 degrees C (boiling). > It has something to do with monolayers of > water molecules not boiling away. > > Rick N6RK > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
