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June 2000

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From:
Timothy Reeves <[log in to unmask]>
Date:
Thu, 1 Jun 2000 11:30:12 -0700
MIME-Version:
1.0
X-To:
Brian Ellis <[log in to unmask]>
Reply-To:
"TechNet E-Mail Forum." <[log in to unmask]>, Timothy Reeves <[log in to unmask]>
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When you say that the energy is actually greater, you mean the energy
imparted to the escaping water molecules, right? But what does that matter?
What really matters is energy imparted to the board. The board itself may
actually decrease in temperature if a low enough pressure is obtained. In
that sense, Doug was right (but he should have said "less heat [transferred
to the polymer, glass, and copper]")
I know... you were just trying to point out the misconception most people
have regarding temperature vs. heat.
I love these technical arguments... :-)
Tim Reeves

> ----------
> From:         Brian Ellis
> Sent:         Thursday, June 1, 2000 7:54
> Subject:      Re: Baking of boards
>
> Sorry, Doug, the heat is more or less the same. The energy required is
> actually
> greater. It is the temperature that is lower.
>
> Brian
>
> Douglas Pauls wrote:
>
> > If you are really concerned about the effects of heat on the polymer
> > qualities or the oxidation of the surfaces, consider using a vacuum or
> > vacuum-make operation.  Gets the water out with less heat.
> >
> > Doug Pauls
> >
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