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I just read this yesterday and I believe it to be true.
THE TRUTH ABOUT BLUE LIGHTS
A normal halogen or xenon bulb produces light throughout the light spectrum. However, the majority of the light it produces comes of whitish/yellow. It does produce a small amount of blue light, but it is smothered by the large amount of white.
When companies sell blue bulbs, they are coating the bulb with something that filters out everything EXCEPT the blue light. That is why their lights seem blue. HOWEVER, BECAUSE THE HALOGEN DOES NOT PRODUCE MUCH BLUE LIGHT TO BEGIN WITH, DRIVING VISIBILITY WILL SUCK.
HID works a different way. There is a tube filled with gas. A current is thrown from one end of the tube to the other, creating light. HID produces a much greater intensity of light throughout the light spectrum, including blue or purple. There is no filter on these tubes.
This is why it is still legal to have HID...because even though it may shine a little blue, the rest of the light produced by the road is not filtered out. Visibility is still good.
PIAA makes lights, and they are street legal. They are different colors however. They are still street legal because they use a different filament. These filaments are less coiled and therefor produce a narrower, more intense light. Because it is narrower, it is easier to see the blue or purple tint that is produced by the bulb. However, PIAA does not light the periphery of the road because of the narrow beam...
Any questions or comments? I'd like to hear them. Thanks. Hope this helps.
THE TRUTH ABOUT BLUE LIGHTS
A normal halogen or xenon bulb produces light throughout the light spectrum. However, the majority of the light it produces comes of whitish/yellow. It does produce a small amount of blue light, but it is smothered by the large amount of white.
When companies sell blue bulbs, they are coating the bulb with something that filters out everything EXCEPT the blue light. That is why their lights seem blue. HOWEVER, BECAUSE THE HALOGEN DOES NOT PRODUCE MUCH BLUE LIGHT TO BEGIN WITH, DRIVING VISIBILITY WILL SUCK.
HID works a different way. There is a tube filled with gas. A current is thrown from one end of the tube to the other, creating light. HID produces a much greater intensity of light throughout the light spectrum, including blue or purple. There is no filter on these tubes.
This is why it is still legal to have HID...because even though it may shine a little blue, the rest of the light produced by the road is not filtered out. Visibility is still good.
PIAA makes lights, and they are street legal. They are different colors however. They are still street legal because they use a different filament. These filaments are less coiled and therefor produce a narrower, more intense light. Because it is narrower, it is easier to see the blue or purple tint that is produced by the bulb. However, PIAA does not light the periphery of the road because of the narrow beam...
Any questions or comments? I'd like to hear them. Thanks. Hope this helps.