[time-nuts] backfill

[Bob kb8tq]

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

> On Jun 8, 2017, at 7:18 PM, Charles Steinmetz <csteinmetz at yandex.com> wrote:
> 
> Bob wrote:
> 
>> You really want to use Helium. Hydrogen is a bit reactive.
> 
> I don't think it's a problem.  The alternators on mains powerplants are filled with Hydrogen under fair pressure, and the internal materials and conditions are not that different from a crystal oscillator inside an oven.  (IH was chosen both for its heat conduction and its low windage.  Helium is enough worse on both counts that it was a non-starter.  Of course, windage isn't important in a crystal oscillator.)
> 
> In any case, it can't be any worse than filling space capsules with Oxygen....
> 
> Charles
> 
> 
> 
> _______________________________________________
> time-nuts mailing list -- time-nuts at febo.com
> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.