Several years ago, I started noticing green yard lights that flicker
like sodium-vapor lights and fluorescents, and they have gradually
become more common. Now green street lights have begun to appear.
What sort of light is this -- and what makes it green?
Joy Beeson
--
joy beeson at comcast dot net
http://roughsewing.home.comcast.net/
-- sewing
http://n3f.home.comcast.net/
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