The Applied Science YouTube channel had an episode where he described building a molecular sieve vacuum pump. (IIRC)
On Sat, Jul 6, 2019 at 12:06 PM EB4APL <[email protected]> wrote: > The H maser that we had at NASA-DSN in the 80´s had a small H2 bottle > which supplied it to the palladium valve, so it could be refilled. We > never needed a refill but once we had to open the plumbing, it was > necessary to reestablish the vacuum before opening the H2 valve. it was > done using a mechanical pump and then a (then unknown to me) "molecular > sieves" pump that was chilled with a bucket of liquid N2. The procedure > was quite convoluted. > > Regards, > > Ignacio > > > El 05/07/2019 a las 16:11, Luiz Paulo Damaceno escribió: > Hi friends, > > We have a hydrogen maser here at the university that i work. It seems the > hydrogen is over. This is possible? If yes, It is possible to recharge It? > > Best regards, > > Luiz. > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. > > > > --- > El software de antivirus Avast ha analizado este correo electrónico en > busca de virus. > https://www.avast.com/antivirus > > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
