need an explanation about temperatures and intensity

[mrQQ]

hello,

if someone with proper knowledge could explain to me why higher HID temperature bulbs produce lower intensity (lm) light, i would be very greateful..

thanks!

[Ken_McE]

Originally Posted by mrQQ

if someone...could explain to me why higher HID temperature bulbs produce lower intensity (lm) light, i would be very greateful..

Color temperature (degrees K) and brightness (lumens) are fully independent. You may not fully understand what you have seen, or you may have seen a misleading group of lights. In the US there are bulbs that try to pretend they are HID by adding a blue coating. This makes them dimmer than the bulb with no coating.

[mrQQ]

no no no, i'm fully aware that temperature and intensity are not related (well, shouldnt be), but higher temperature HID kits make less lumens than lower temperature, and i was just curious what was physics explanation for that