-=> JASEN BETTS wrote to CURTIS JOHNSON <=-

 JB> Hi Curtis.

 JB> 05-Jan-03 02:45:40, Curtis Johnson wrote to Jasen Betts

 JB>> yup, it takes a phosphor or Cherenkov radiation to glow in the
 JB>> dark, and Cherenkov radiation mainly happens underwater.

 CJ> Tsk.  And so recently in this echo radium watches were mentioned.

 JB> AFAIK raduim watche dials use a phosphor of some sort mixed with
 JB> radium.

Zinc cloride or some compound of zinc IIRC.

 JB> most atomic radiation is invisible - either particles or invisible
 JB> wavelenghts of light (gamma rays)


 
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