VOMs (WAS Re: SBC6120 (a build-it-yourself PDP-8 clone) grammer
dkelvey at hotmail.com
Wed Jun 28 09:55:26 CDT 2006
>From: John Foust <jfoust at threedee.com>
>At 05:11 PM 6/16/2006, Tony Duell wrote:
> >> Do you have to pay a "hazardous waste disposal fee" when you let the
> >> vacuum out?
> >No. In fact as a small amount of polution goes into the device in place
> >of the vacuum, they should be paying you.
>It depends on how the vacuum was produced, no? Making a low
>vacuum with mercury might result in a fair amount of
>highly regulated mercury vapor in the "vacuum."
The amount of mercury in a vacuum is no more than the same volume of
air with exposed mercury in it. The partial pressure is the same. If it is
the mercury will condense out. Of course if you heat the mercury, you can
increase the partial pressure.
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