[R-390] meter luminescence

[barry williams]

Here is a link to a short history of radium dials and radium girls:  
http://www.roger-russell.com/jeffers/radiumdials.htm



the other Barry


> Plutonium is known to do that!
>
>
>
>
>> Seen plenty of blah brown meters that do nothing but move the 
>> pointer, in
>> '390's and '390A's, in my day.  Never before seen ones where the 
>> markings
>> glow a "Luna Moth green" after exposure to light, like the hands on a 
>> Big
>> Ben clock of some years back.  Were there actually meters that had the
>> strontium aluminum silicate [I'm guessing at the composition here] 
>> rather
>> than the radium?  73, Brian KA9EGW
>>
>> ______________________________________________________________