Yes I guess I was talking more about fluorescent tubes. I'm scratching my head a little, because unless you are using one bulb, or have several all aimed at the center, I can't picture a ball shaped light intensity. However I have to believe they guy that is standing right there with a light meter. I just hope you are measuring radiant flux and not lumens. And I didn't think you were trying to be a snot, and I hope you don't think I am. Just engaging in a little friendly weed discussion.