WyrreJ> I'm sorry but that's wrong. First, there is no "white" in the spectrum. There is, however, blue and that does tend to scatter more than red. HID's are perceived as being more blue than halogen's and their color temperature is generally somewhat higher (and thus bluer) than halogen, but not by that much. Halogen tends to have a color temp around 3200K and OEM HID is around 4200K (which is the average color temp of sunlight in the middle of a summer day on Earth, exactly what human eye is adapted to best see). However, the common perception that HID's are "blue" does not come from their 4200K color temp, but rather artifacts produced by the projector mechanism such that the edges of the light beam get a bluish, even purplish sparkle to them. That phenonmenon is the reason people think HIDs are "blue" and all the ricer madness to get higher color temp bulbs comes from that side-effect of HID projectors (not HID reflectors, just projector systems).
Wow.. I am usually arguing with folks on the NISSAN forums, many people send to be pretty misinformed when it comes to lighting. For once, I can honestly say that I agree with this guy. :)
Its good to see more knowledgeable lighting people sharing good information.
- Mike / ClearCorners.Com