For a closer look at the original experiment by Greg Blonder
(as well as links some other BBQ-related tests he also performed) be sure to check out this site:
The tests and conclusions are quite solid IMHO.
He does some good experiments with smoke ring formation too.
[COLOR=green][B]XL BGE[/B][/COLOR], NBBD Offset, 3 Weber kettles, gas and electric cabinet smokers, and a few smoker projects waiting