OT. Street lights revisited ...
In article ,
"Dave Plowman (News)" writes:
What's actually wrong with high pressure sodium?
Already sold, lamps are cheap, lighting industry makes no money.
Same with low pressure sodium and to a lesser extent with metal halide.
Hence the pressure from the lighting industry to move to new technology.
--
Andrew Gabriel
[email address is not usable -- followup in the newsgroup]
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