Originally Posted by sonic_blue_tremor02
HID those are the bright white ones right
Yes...to an extent.
Most luxury vehicles now-a-days have HID lighting. HID stands for Hi-Intensity Discharge, which basically means they put out a LOT of light.
As you can see from above, there are different "ratings" to these lights, and these ratings are in direct correlation with the color or warmth of the light.
HID lights don't use a heated filiment like halogens do, therefor they have extended life and are more energy efficient. The power supply excites atoms so that they produce photons (light). In the case of halogen bulbs and gas lanterns, heat
is doing the exciting. In other technologies like HID or sodium-vapor (street-lights, flood lights), various forms of electricity create the excitement.
Most cars currently use halogen bulbs in their headlights. The new blue-ish headlights are using a different technology called High Intensity Discharge (HID). We normally see HID lamps in the form of mercury vapor and sodium vapor lights used as street lamps and as outdoor lighting for stadiums. These lamps are popular because they are efficient
. In the case of sodium vapor, they are twice as efficient as normal fluorescent bulbs.
Mercury and sodium vapor lamps produce light using a technique similar to that used in fluorescent lamps. In fluorescent lamps a low-pressure mercury vapor produces lots of ultraviolet light that excites a phosphor coating the tube. In the case of mercury vapor lamps, it is a high-pressure gas, the distance between the electrodes is very short and the light is produced directly without the need for the phosphor.
In the case of HID headlights, the same high-pressure technology is used. The lamp is similar to a mercury vapor lamp. However, designers of the headlights had to solve one problem with normal mercury vapor lamps -- the fact that they have long start-up times. Xenon helps solve the start-up problem, as does a special controller. All of these tricks mean that these headlights are expensive now, but mass production should bring the cost down eventually.
It's pretty easy to find a decent set of halogen bulbs that resemble HID kits. You may or may not notice a change in visibility, but you'll get the "look" of those expensive kits for a fraction of the price. These are usually called "Xenon" "Hyper-White" or other terminology in relation to the color of the light emitted. Most often than not, the color is decided by the coating on the halogen bulb.
In any case, when handling any type of light bulb, DO NOT TOUCH THE GLASS part of the bulb. Oils from your fingers will cause problems...including a bulb exploding!