Physics! --FT Sent from iPhone
> On Apr 7, 2019, at 9:50 AM, Peter Frederick via Mercedes > <mercedes@okiebenz.com> wrote: > > It takes a very long time to remove the water with a vacuum pump, it's > "sticky" and has a fairly low vapor pressure. If you purge with dry gas > first you only have to get the stuff that stays a gas a room temp out. > > The difficulty is that there is no mass movement of molecules in moderate to > high vacuum, everything moves by diffusion. That's not very fast for things > that want to stick to the pipes and hoses. Permanent neutral gasses diffuse > through the pipes and hoses to the pump fairly quickly. > _______________________________________ > http://www.okiebenz.com > > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > _______________________________________ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
