Posted on 01/02/2007 8:57:15 AM PST by mathprof
They have ones now that are shaped like regular light bulbs. These are handy in places where the lamp shade clips to the bulb.
You can buy three packs of 100 watters at walmart for under 8 bucks, and they last forever.
I find that my lamp shades tint the light appropriately, no matter which bulb I use. It is the overall savings in price that I appreciate the most. That and I am not changing bulbs ALL THE TIME anymore.
CFL are the same as any other fluorescent lamps al the good one are triphosphorus coating but the spiral have to have a lower pressure in them because of there shape so the red they make is less red and more orange. The ones with the u shaped tubes make better red and have the best CRI and the highest power density of the fluorescent lamps .
I have never seen any low color temp of 2700K fluorescent lamps that had a CRI over 85. This is because none of the florescent lamps make true red. If you lower the red out put( higher color temp) then the lamp becomes bluer and the CRI will be higher. The CRI is taken for each color temp so a lamp with a 6500k color temp does not have to make any red. A apple will still look sick under a 6500K CFL or any high color temp fluorescent tube.
There are only a few arc type lamps that will make true red and one is the 4200K 150 watt Philips CDM 150 watt metal halide lamp. All the high end retailers are replacing there halogen fixtures with the CDM lamp It has a CRI of 96.
Of course not. You'd need a 50-watt fluorescent for that.
Here's the good news, in spite of all the nay-sayers. They use about 1/4 the electricity of an incandescent bulb. They have improved their quality a great deal in the past couple of years. And, they aren't anywhere near the $8.00 per bulb that some people are quoting. They were 2 years ago, but not now.
And the save you a LOT on your electric bill, even if you just put 'em in the 3 or 4 lights that get the most use in your home.
looking for fatal facial or body flaws
LOL! That's one fatal flaw I thankfully haven't found yet, although certain relatives have said that I have holes in my head.
Image just popped into my head so to say. ;?)
What brand of full spectrum lighting products are you happy with?
"full spectrum lamp (made by IGIA)"
Sorry!
"full spectrum lamp (made by IGIA)"
Sorry!
Walmart? Oh, the humanity! Non-union light bulbs!
Thanks! I hadn't heard of them. We don't have a Lowe's, though. Maybe Home Depot? (I read a lot and I'm VAINLY trying to avoid getting glasses, LOL!)
Haven't seen those yet.
Thats a shame, you might want to consider them for your outdoor fixtures.
Yeah, they're great for me so far. 2 years and running for the back door light. Not sure what brands everyone else is getting but mine are all GE.
No.
Ban all upward-facing lighting used to light the sides of office buildings. My office building must have at least 5000 watts of lighting pointing up the sides of the building, just so it'll look kewl at night. Waste of energy, and throws a heck of lot of light upward. In fact, I'd like to see all unnecessary upwards-facing lighting banned.
"They burn out fast in the garage because of the cold temperatures. They don't fit in most of my ceiling fixtures. They are very expensive."
I've got two of them OUTSIDE my garage. Winter temps here sometimes go below 0 F. Summer temps into the 90s with high humidity aren't unknown. Plus they're somewhat exposed to the elements (not directly, but the bottom of the fixtures are open to the air). These $2 apiece lights are still going strong after a couple years.
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