CFL lightbulb colour spectrum and Kelvin values

No the color index, kelvin, value mixes it does not gain intensity. I have seen art departments in universities use warm white and cool white in the same fixture. Looks weird if you look at the ceiling but it comes out closer to sun light. There are daylight tubes available, not sure about CFL's though.

Have you thought of grow lux bulbs? They really look weird, but are great for plants.

Thanks for the links but I'm UK rather USA based. Perhaps I should've made that clear.

Damn!

I have

Nope still on a resaerch/decision making process. Having visited one of the above sites tho could well be the item to head for since they come in a purpose lamp fitting for table or floor. Unfortunately not good for table asthetics but may be wonderful for the plant. The cfl types tho produce negligable heat and therefore be placed virtually on top of the plant with higher kelvin it would appear.

Found many full spectrum CFL type bulbs now after more searching and Solux claim to be the best but in quartz halogen lamp form and 12V. Again damn!

Steve

Your joking ov course.

My wife has the same problem. She is an artist and she requires daylight colored lamps. Ordinary floresent tubes 4 foot and 6 foot tend to be heavy in the green spectrum. If you take a picture in a grocery store with daylight film you will find it has a greenish cast if taken with no filters.

There are special daylight floresent bulbs but they are, in general are much more expensive. . . I DO NOT FOLLOW MANY OF THESE NEWS GROUPS To answere me address mail to snipped-for-privacy@aol.com

I hit the wrong key and the message went out prematurely. As I was saying they are expensive. But there are special bulbs which are 65 watt bulbs which provide an equivalent of about 500 watts of incandesent light. Unfortunetly they use a special larger socket and the bulbs are about 20 dollars each in the US. I see them occaisionally in places like Costco in fixtures for about 25 dollars and they are sold as work lights. An alternative is to buy different brands of cfl lamps and you will find that the color of those lamps vary from lamp to lamp.

My wife uses a few of those and some are Blueish and some are redish and the combination gives a good daylight spectrum.

The color spectem of the bulbs varies as the frequency of the internal converter used to light them varies.

If you check around you will find some that will probly do your job.

One other thing. There are lamp stands on the market that are equiped with daylight colored 65 watt cfl bulbs as I mentioned above. These lamps usually run about $129 and I have seen them advertised In "Bibicle Archaeology Magazine" Replacement bulbs from them run aroud 30 or 40 dollars. . . I DO NOT FOLLOW MANY OF THESE NEWS GROUPS To answere me address mail to snipped-for-privacy@aol.com

On Sat, 4 Oct 2003 16:22:21 +0100, "Stevie Boy" Gave us:

There are "grow lamp" versions in fluorescent form factor.

If they are too much of good thing for you, mix ONE into each fixture instead of two.

On 04 Oct 2003 18:06:14 GMT, snipped-for-privacy@aol.community (BUSHBADEE) Gave us:

You re such bad liar.

That baby "B": bullshit in front of the post header is back again, I see. Will you EVER get rid of that retarded streak you keep showing the world?

Stevie Boy schrieb:

Hello,

you can't get 4000 K or more from a halogen bulb without using filters. The tungsten filament melts before 4000 K. There are filters to get 5000 K light from a halogen bulb with only 3300 K, but you will loose a lot of light in the filters.

Bye