Quote Originally Posted by khyberkitsune
In way many more setups than you can possibly imagine, and across the globe, pal.
I have sincere respect for your professional abilities. That is why I am asking the questions instead of simply telling people "no you're wrong". But i'm still waiting for you to explain where that 1000w of electrical energy goes if not into heat energy.

Or put another way: can you please explain how an induction lamp using 300w of electricity would produce less heat than HID lamps using 300w, if they are both in the same sealed room?

I totally get the concept that the TUBE of a particular lamp may be cooler. Maybe we are discussing different things?? I am referring to the air temperature in the room, which is what the thermometer on the wall measures.