posted by [identity profile] tesinth.livejournal.com at 03:05am on 22/03/2007
You can get 75W equivalent CFL's, but the whole stupid "watt=light output" thing is stupid to begin with, you're really looking for the lumen output. While CFLs are still pretty bad in the 60Hz flicker area, they can be used in ceiling fixtures and most other applications (the early problems were with base-up, base-down, base-sideways configurations, which have mostly been rectified).

I haven't switched to total CFLs yet either, mainly because I still live in an apartment and long-term energy savings aren't relevant.

The other issue, is, as you mention, the quality of the light. I use "day-color" inc. bulbs mostly, I like the natural range. CFLS, like all Fluorescents, are very close to true light, but they emit a wide range of colors in very narrow spectrums, i.e. a block of seven colors (due to the chemical fluorescence of the various chemicals in the bulbs which is then passed through the phosphorus coating, instead of the output of a continual stream of light wavelengths that are emitted through the incandescence of the tungsten element in the regular bulb.

/knows *way* too much about how lights work, damn job...
//sorry for any spelling errors, I've been drinking... :)
 
posted by [identity profile] rfunk.livejournal.com at 04:08am on 22/03/2007
Yeah, I know lumens are the real measurement to look at for brightness, but since incandescent bulbs have similar brightness (within a few hundred lumens) for a given wattage, it's easier to compare with that, at least until I can actually see the brightness with my eyes, and don't have the lumen measurement handy. (It tends not to be printed on my bulbs like the wattage is.)

I tend to prefer the natural sunlight color temperature too, and since my CFs are 5000K I would've expected them to look just like my full-spectrum incandescents. You make a good point about fluorescents emitting a few narrow bands of color rather than a full spectrum centered at the given color temperature.

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