XPost: comp.mobile.android, misc.phone.mobile.iphone   
   From: michael.trew@att.net   
      
   On 5/2/2022 20:44, nospam wrote:   
   > In article, Alan  wrote:   
   >   
   >> On 2022-05-02 11:30 a.m., Andy Burnelli wrote:   
   >>> I don't know anyone who has taken apart a typical 9V battery who wasn't   
   >>> marvelled at the beauty and simplicity of how they achieved that voltage.   
   >>   
   >> Do you even now what "battery" actually means in the context of electricity?   
   >   
   > he has photos of books about vacuum tubes/valves.   
   >   
   > what more is there to know?   
      
   I don't have any books on the matter, but I have an old vacuum tube   
   tester, and some equipment to restore old tube radios and televisions --   
   although that hobby has been side-lined for a long time.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)