In article ,
Alan Braggins wrote:
Though
http://en.wikipedia.org/wiki/Fluores...licker_Effects
says there's also a perceived flicker effect that affects some people as
a result of the spiked spectral pattern of the light output, even when
using high frequency ballasts.

I'd guess that would only occur with very high efficiency single phosphor
tubes (horrid white) . Tri-phosphor ones tend to have longer persistence

--
*When cheese gets its picture taken, what does it say? *

Dave Plowman London SW
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