Xenon(HID) lighting Q's
vrg...@hotmail.com
a 3000K, vs 4300K on up to 12000K?
thanks
Buerste
<vrg...@hotmail.com> wrote in message
news:ei1pp5h387oqqm5vg...@4ax.com...
> What is the difference in the bulbs(capsules) that makes one
> a 3000K, vs 4300K on up to 12000K?
>
> thanks
That's color temperature in degrees Kelvin.
http://www.mediacollege.com/lighting/colour/colour-temperature.html
Stuart Wheaton
Changes to the chemical content of either the vapor or of the phosphors
coating the inside of the capsule will alter the color temperature of
the lamp.
Larry Jaques
scrawled the following:
>What is the difference in the bulbs(capsules) that makes one
>a 3000K, vs 4300K on up to 12000K?
In fluorescents, different phosphor coating formulae on the inside of
the glass create different color output. I neon, it's different gases
which emit different colors.
Dunno 'bout xenon, but for only $249...
http://www.oscintl.com/eBooks/special_reports.htm
(standard disclaimer applies)
You got me curious, too, so I delved deeper. The answer seems to be
that they coat the bulbs with different crystals, which act as
filters. http://www.lumenez.com/faq.html
I like the 6000K, the purply white. It has the highest lumen output,
too. My new Tundra has twice the light the old F-150 did so I'm happy
as is. No need to install $200 more in lighting.
Since these are metal vapor lamps, this subject is on topic for once.
--
I must study politics and war that my sons may have liberty to study
mathematics and philosophy. My sons ought to study mathematics and
philosophy, geography, natural history, naval architecture, navigation,
commerce, and agriculture, in order to give their children a right to
study painting, poetry, music, architecture, statuary, tapestry, and
porcelain.
-- John Adams
Joe
<lja...@diversify.invalid> wrote:
>On Sat, 13 Mar 2010 23:48:26 -0700, the infamous vrg...@hotmail.com
>scrawled the following:
>
>>What is the difference in the bulbs(capsules) that makes one
>>a 3000K, vs 4300K on up to 12000K?
>
>In fluorescents, different phosphor coating formulae on the inside of
>the glass create different color output. I neon, it's different gases
>which emit different colors.
Sort of, but not exactly. Properly speaking, neon glows an orange-red
color (but you knew that). For (nearly) all other colors the gas mix
is argon with a tiny drop of mercury. The argon provides the initial
ionization in order to get the mercury to vaporize and ionize. The
mercury gives off predominately UV emissions, which excite the
phosphor coating on the inside of the glass tube. The particular
choice of phosphor is what provides the specific color in non-neon
"neon" lights (just like regular fluorecent lamps). Ar/Hg in clear
tubing produces a nice violet light (the UV is filtered out by the
glass).
Some other options are using Krypton (no Superman jokes, please!) or
Xenon as fill gases in clear tubing; the Xenon light, though dim, is a
really cool platinum color. Sometimes Helium is added in Ar/Hg fills
to provide more reliable starting in really cold temperatures.
Interestingly (well, to me, anyway) is that phosphor coated tubing
produces a different color if you fill it with neon. A blue tubing
I've used produces green light when filled with Ne. Some other colors
just produce a muddy brown color with a Ne fill.
There, that's Neon 101, in capsule form.
[snip]
Joe
Bill Noble
"Joe" <see_re...@sig.lin> wrote in message
news:9c4sp5tdtr94566j8...@4ax.com...
if you look up plasma globe, or "eye of the storm" - you will eventually
find a class of devices that use various noble gas mixtures for cool colors
and effects