Mudcat Café Message

sj

User Name	Thread Name	Subject	Posted
Boab	American pollution (25)	RE: American pollution	08 Mar 05
I believe the light emitted by fluorescent lamps is "cyclic" [i.e. varying according to the alternating power supply from turbines --60 /sec in the Uk, and, I think, 50/sec. in North America.] Reputedly bad for the eyes over a long period.

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