In ,
TCS wrote:
Well.... if you want the new home's interior to look like a cross between a
bomb shelter and office...
Keep in mind that fluorescent's have a different spectra. Either get
colored bulbs, fixtures, or take it into consideration when selecting
interior treatments.
Or bulbs of these color types:
/D835, /835, or /SPX35
/D830, /830, or /SPX30
Designer 3000 or 3500
Ultralume 3000 or 3500
These have a color rendering index of 82-86 and their minor color
distortions are mostly in the direction of making colors more vivid than
they appear under light with a CRI of 100.
These are also as bright/efficient as fluorescents of lower color
rendering index.
Fluorescents with color rendering index 90 or higher have compromised
light output, and - like many with color rendering index below 80,
although more mildly - have their color distortions mostly in the
direction of making colors less vivid.
(For comparison: Traditional "cool white" has a CRI of 62, and the
"warm white" of similar technology has a CRI of 53!)
I recommend the "T8" (1 inch diameter) 17 watt and 32 watt types.
Those, and especially the ballasts for them, tend to be more efficient
than the longer-established sizes. If you get T12 (1.5 inch diameter), be
sure you are getting "commercial grade" ballasts, and it is recommended to
get the fixtures from an electrical/lighting supply shop of the kind that
contractors go to.
Back to 30 and 35 colors: 30 is 3000 Kelvin, and fluorescent lamps with
this rating are supposed to have a color like that of incandescent, but
tend to be slightly more pink and less yellow. 35 is 3500 Kelvin, a
whiter color but still a "warm white" shade. 41 is "cool white" and 50 is
an icy cold pure white, sometimes looking slightly bluish. 65 is bluish.
Of these, my favorite is 3500 K.
- Don Klipstein ,
http://www.misty.com/~don/index.html)