Originally Posted by angelgoob
Inverse square law.
We all know.
That's why you use 90 degree lenses.
It's funny CMH and HPS are coming out with "new technology" as their stupid old street lamps are being replaced with LED! hahaha
You know, in public lighting ICR is veeeery important, that's why they are replacing. MH were the lamps with a good chromatic response and have been surpassed by LEDs.
Now is the moment we growers start replacing our sodium lamps by leds. The technology is there, efficiencies are already these of HP. We just need price reductions. I'll keep my 600W HPNa for a couple of years.