Just to illustrate the scale of things I did a little research on the subject
of temperature and color.
Per "Care and Feeding of Power Grid Tubes", 4th printing 1982, a thoriated
tungsten filament
at a typical operating temperature of 1900 deg K will exhibit a specific peak
emission around 50
to 100mA per watt of filament heating power. The sun's surface temperature is
around 6000
deg K, core temperature is around 15,000,000 deg C. The color temperature of
average daylight
(yellowish/white) is said to be around 5500 deg K. This would suggest that an
anode running
a 1000 K would be a dull red color.
73 de Mike, W4EF.............
----- Original Message -----
From: "2" <2@vc.net>
To: "jeff millar" <jeff@wa1hco.mv.com>; "Tom Rauch" <W8JI@contesting.com>;
"John T. M. Lyles" <jtml@lanl.gov>
Cc: "@AMPS" <amps@contesting.com>
Sent: Friday, September 14, 2001 9:54 PM
Subject: Re: [AMPS] gettering
>
> >
> >----- Original Message -----
> >From: "2" <2@vc.net>
> >To: "Tom Rauch" <W8JI@contesting.com>; "John T. M. Lyles" <jtml@lanl.gov>
> >Cc: "@AMPS" <amps@contesting.com>
> >Sent: Thursday, September 13, 2001 10:32 PM
> >Subject: Re: [AMPS] gettering
> >
> > < lot's the usual stuff deleted >
> >
> >> // 1000º C is yellow/white-hot. If this were the case, gettering would
> >> not take place.
> >
> >Actually, we can see that 1000C (1270K) is redhot and yellow/white occurs at
> >about 5000C.
>
> // As I recall, the temperature of the sun's surface is is in the
> 5000ºC. range.
> - The main problem as I see it is the claim that gettering of air
> molecules takes place at room temperature,
> >...
>
> - R. L. Measures, 805.386.3734, AG6K, www.vcnet.com/measures.
> end
>
>
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