UV lights and effectiveness

[Michael Gochfeld]

I don't know about moth attractiveness, but fluorescents do age 
gradually.  Some of the mercury vapor deposits on the glass which could 
change both the characteristics of the light and the transmissibility of 
the glass. We had to look at this issue on the Mercury Task Force 
(concerned with disposal of spent fluorescents).  So it's at least 
plausible that attractiveness might change over time. But many 
fluorescents operate for thousands of hours, so the aging might not be 
apparent to most moth-ers. 

M. Gochfeld

 
 ------------------------------------------------------------ 

   For subscription and related information about LEPS-L visit:

   http://www.peabody.yale.edu/other/lepsl