>> =A0 =A0 =A0That bottle was weighted before and after the demonstration. >> =A0 =A0 =A0No difference. > > There WAS a difference, since this was taken into account in the energy > input calculations. =A0It was apparently less then 1 gram however. Technically the scale reported no difference, but the scale has a resolution of 1 gram, so for the purposes of the test they assumed that no more than 1 gram was consumed, and they used that value in the calculations. The value displayed on the scale they used, however, did not change. -Adam --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .