[AMPS] Gassy Tubes and Gas Arcs

[Rich Measures]

>>There are two kinds of blue glow with 8166/4-1000A tubes:  Where the 
>>electron beam strikes the glass envelope, and in the evacuated space.  
>>The first case being normal and the second case being abnormal.
>
>In the evacuated space???  Isn't the whole tube evacuated?? 

With luck.

>  Please explain...

  If one sees ionized gas, is the inside evacuated?


Rich...

R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures  


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