kelvin?

[scout]

My pc lighting says 9325K. What does this mean exactly. I see many people talking about 10,000k lights. A difference of 675k. What would the difference be? I realize these numbers have something to do with color spectrum. Is the lower the number mean "bluer"?
Thanks
Scout

[REAL BIG FISH]

Actually the larger the number the bluer.

Jamey[img]/ubb/biggrin.gif[/img]

[PPFBOBB12]

Ya,the Higher the Kelvin the Bluer the Bulb will look.Generally a 65k bulb looks like the sun a noon (12:00PM),a 10k is generally a Crisp white color,a 12k bulb,IMO to me looks like a 10k bulb with some atinic 03 light in the bulb,and finally a 20k bulb is considered Pure Blue.Now there you have it.There is one k bulb I left out,because I have never seen a 14k bulb,but i've heard it looks almost like the 12k [img]/ubb/wink.gif[/img].

------------------[*]My Webpage[*]My email PPFBOBB12@aol.com

[Ninong]

Originally posted by scout:
What does this mean exactly.

Hi Scout,

Incandescent objects change color as their temperature changes. For example, a red star is not as hot as a yellow star (like our sun) which is not as hot as a blue-white star.

In order to describe the appearance of the light emitted by a lamp, they use as a reference the Kelvin temperature scale. On this scale 0 K (absolute zero) = -273 deg C. On this scale, a candle flame is assigned a color temperature of 1800K (it is very yellowish); a standard incandescent light bulb would be approximately 2500K - 3000K; metal halide lights would run from 4300K up to 20,000K. It has nothing to do with the actual temperature of the bulb; it is only a reference to describe the relative difference in appearance of the light.

It is not even an accurate way to describe the lights we use, especially the higher K ones because they do not emit full spectra. The Kelvin temperature of a light is in comparison to the theoretical light emitted by a blackbody as it is heated to higher temperatures. When you light an electric oven, it starts to glow dull red, then bright red, and then if you could heat it high enough it would change color from bright red to orange to white to bluish-white.

The best example I can think of that shows how inexact this can be when applied to lamps would be the 7100K rating for "blue" power compact lamps. It means nothing since the light is not full spectra; it's just a number arbitrarily assigned to describe the light.

There, that should do it. [img]/ubb/lol.gif[/img] [img]/ubb/confused.gif[/img] [img]/ubb/lol.gif[/img]

N I N [img]/ubb/rolleyes.gif[/img] N G



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