On 25/08/2010 13:46, RussellMc wrote:
>
> A good straight tube fluorescent can give in excess of 100 l/W BUT
> it's 360 degree cylindrical radiation pattern with need for reflectors
> and the propensity of people to feel they needs diffusers means
> delivered efficiency is noticeably lower.
I thought you would have some interesting comment.

I think you are right, that you do reach a plateau where you don't want=20
more light. I think we have been there maybe last 20 years.

I think there is room for better design luminaries with tubes. I=20
personally have never fitted diffusers on tubes as they are already 100s=20
of times more diffuse than halogens and more diffuse (spread out) than CFLs=
..

Though more people are lighting up outside with 200W to 1000W of=20
halogen, high pressure or sodium lighting all night. Madness.
--=20
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