[Boatanchors] CFLs

[J. Forster]

Years ago, I was trying to match ivory floor and wall tile and fixtures
for my bathroom redo. I could get a perfect match in sunlight, but the
same tiles looked completely different under any of the roughly 20
fluorescents I tried. I doubt things have improved. Now I know why most
bathrooms are white.

Google for the spectra of CFLs. They are all over the place.

-John

================


> John,
>
> I don't doubt the issues with colors,
> I think I recall you made a comment
> quite awhile back about not being able
> to discern some certain colors under
> CFL lighting.
>
> I suppose where I use the CFLs, outside
> perimeter lighting, I am not particularly
> concerned about true color rendition.
>
> Philips calls the other lighting "color"
> as their "cool daylight."  Managed to
> sneak off to the bulb department at Lulu
> Hypermarket while getting some lox and
> bagels.
>
> Sheldon
>
> ----- Original Message -----
> From: "J. Forster" <jfor at quik.com>
> Date: Friday, December 31, 2010 6:02 pm
> Subject: Re: [Boatanchors] CFLs
>
>> Any CFL has a spectrum that is nothing like Plankian (Black Body
>> Radiation). And they are nowhere near "white" They are all full of
>> giantspikes and useless for evaluating colors.
>>
>> -John
>>
>> ================
>>
>>
>> > The Philips branded CFLs are available
>> > in "warm white" which approaches the
>> > same color as an incandescent bulb
>> > and a much whiter version, "daylight" (?).
>> >
>> > I don't have any of the "whiter"
>> > versions here to note the actual shade
>> > Philips calls 'em.
>> >
>> > 73
>> > Sheldon
>> >
>> > ----- Original Message -----
>> > From: Jack Taylor <jack at n7oo.com>
>> > Date: Thursday, December 30, 2010 10:15 pm
>> > Subject: Re: [Boatanchors] CFLs
>> >
>> >> My experience with CFL's is not nearly as extensive as some on
>> >> here but I've
>> >> found
>> >> the 99 cent variety to have a harsh light, take a couple of
>> >> seconds to
>> >> ignite and to
>> >> sometimes fail within a year.  Had much better luck with the GE
>> >> brand sold
>> >> by
>> >> Wal Mart.  These ignite almost instantaneously, have a pleasant
>> >> glow and
>> >> thus far
>> >> after a year, no failures (yet).  I've not noticed any RFI.
>> >>
>> >> Jack - N7OO
>> >>
>> >
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>>
>>
>
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