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I've done the one end to the other before. Not a lot of difference on a bare lamp, actually more when used with a reflector. Assume it has to do with imperfections in the reflector.
I have measure a flat gloss white surface vs. a Ice Cap reflector and it is about double the output with the reflector. Look up the inverse square rule (or law) to see why a parabolic relector makes such a difference.
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Grim tells it like it is.
Last year the SEC was the strongest conference but overrated. This year they were just overrated.
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