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GE Reveal CFLs

Random Variable

Random Variable

Lifer
Are my eyes deceiving me? I bought some Reveal CFLs from Target yesterday, and I think I actually like the light they produce more than light produced by the Reveal incandescent bulbs.
 
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dosen't matter.
watt fixture ratings are based on incandescent..
if vibration shortens life u'll find out sooon enough
 
Random Variable said:
Are you not supposed to use a CFL in a ceiling fan fixture unless it says you can on the package?
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I have the cheap Costco Feit CFL's in one of our ceiling fan light fixtures with no problems. IIRC, as long as the fixture isn't dimmable, you're ok. They MAY not last as long because of the vibrations in the fan though.

I picked up some of the GE "Daylight" CFLs at Target a while back. I prefer the color spectrum to that of the warm white of most CFLs, but they don't appear to be as bright, even though they're have the same 900 lumen rating as the Costco Feit brand warm white bulbs.
 
I prefer the light from CFLs over incads. It's a brighter whiter light I find, illumunates the room with better quality. I installed some in my basement, thinking of putting more.
 
Random Variable said:
Are my eyes deceiving me? I bought some Reveal CFLs from Target yesterday, and I think I actually like the light they produce more than light produced by the Reveal incandescent bulbs.
Click to expand...

Daylight CFL's have been available for as long as CFL's have been available.

These are nothing special or nothing new, AFAIK.
 
Blubber is the raw material, whale oil is the final product. I'm not sure where one would get whale oil these days except maybe Japan. Most oil lanterns in the US run on kerosene or more highly refined lamp oil.

.bh.
 
Lumens is for brightness Color Temperature is the quality of the light. Most fluorescent bulbs run toward the green/blue end of the scale while the so called "warm white" shifts it toward the red end.

.bh.
 
Random Variable said:
I've experimented with daylight CFL's. The Reveals produce light that feels warmer and a lot less sterile.
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Hmm.. Maybe i'll pick one up, just to see.

I use a couple of 45W spiral daylight CFL's in the basement. Wouldn't hurt to have another. 😉
 
Most of my lights have a dimmer switch so Reveal's don't work for me, which whine when dimmed.

The problem I've had with CFL's in general is that they dim over time. A 60w equivalent bulb may indeed last for years, but over time may only produce 30w of light (unscientific observations.)
 
Zepper said:
Lumens is for brightness Color Temperature is the quality of the light. Most fluorescent bulbs run toward the green/blue end of the scale while the so called "warm white" shifts it toward the red end.

.bh.
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Yes if oversimplified. Polychromatic phosphor mixtures have blossomed as of late offering not only higher quality output (color rendering) but higher efficacy as well! You can have lots of lumens from a wide spectral plot however if the lines are predominately in the shorter wavelengths (blue) these will do little to make it appear brighter and make the light feel colder and harsher. The 7000K HID automotive retrofit is a perfect example of this.

Lumen maintenance is not the best with mass market retrofit products - the so called compact fluorescent. Ideally it's better than incandescent however early failures bring the stats way down too.
 
The eye is most sensitive in the yellow area of the spectrum, so the warmer phosphors also appear brighter for the same actual lumens. They claim that CFLs only degrade (lumens) about 20-30% over their lifetime (about one f-stop) which is barely noticeable. Most CFL ratings are initial lumens.

I like halogen bulbs for some applications and there are technologies in development to bring efficiency to near CFL levels.

.bh.
 
Zepper said:
The eye is most sensitive in the yellow area of the spectrum, so the warmer phosphors also appear brighter for the same actual lumens. They claim that CFLs only degrade (lumens) about 20-30% over their lifetime (about one f-stop) which is barely noticeable. Most CFL ratings are initial lumens.

I like halogen bulbs for some applications and there are technologies in development to bring efficiency to near CFL levels.

.bh.
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~530nm typical for human eyes. It's a bit yellower than emerald green. 😉
 
I'm not so sure about these GE Reveal CFLs anymore. The past two days I had a persistent headache. I reverted back to incandescent bulbs, and now I feel better. Of course, correlation doesn't imply causation, but I think I'm giving up on CFLs.
 
Random Variable said:
I'm not so sure about these GE Reveal CFLs anymore. The past two days I had a persistent headache. I reverted back to incandescent bulbs, and now I feel better. Of course, correlation doesn't imply causation, but I think I'm giving up on CFLs.
Click to expand...

Its teh mercurie!
 
RedSquirrel said:
I prefer the light from CFLs over incads. It's a brighter whiter light I find, illumunates the room with better quality. I installed some in my basement, thinking of putting more.
Click to expand...

When I got my first CFL, it took some time to adjust. Now it produces pretty much the same colour as an Incandescent, but everything had a strange bluish tinge at first.
 
I've been slowly replacing all the bulbs in my house with whatever Costco cfl's I found and I've had no complaints.

I do recall when cfl's first came out they were so stark looking.
 
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