Hi Rick, Rick Karlquist wrote:
> > My tests showed that epoxy has no effect whatsoever on humidity. > Goes right through it, right away. That is not generally possible. Some epoxies will hold a vacuum for an extended period of time. I know of no mechanism whereby epoxy could hold back both nitrogen and oxygen molecules, and not be able to hold back H2O vapor molecules. Epoxy is even a pretty good seal for helium as was shown by its successful use in HeNe lasers. Either your epoxy seals were not properly done (very likely), or there is another mechanism in play. If you did not pressure test your epoxy seals, you really gained no useful information from your tests.... Well, other than the knowledge that you didn't make a successful epoxy hermetic seal. I presume that you saw different behavior with solder seals? If you didn't, then maybe what you were seeing was the difference in thermal resistance between humid air and dry air. -Chuck Harris _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
