Re[2]: Halide lamps (short)
Mon, 07 Feb 94 15:57:42

Thank you John,
> fluorescents are appx 88 lumens/watt
I have been looking for this for a while. One question, what's
the difference between LUMENS and FOOT-CANDLES if any. Is there
a formula? Also, how much do they degrade with usage (down to
how many lumens)?