Yigit Turgut gmail.com> writes: > Bottom line is ; he is indirectly measuring the moment applied to the > device by his hands (: That is one possible explanation. I wonder why dave's inquisitive mind did not prompt him to put the *counter* upside down to see if the effect appears, something any self respecting experiments would have tried imho ;) Brooke's experiment at least shows all 4 possible roll positions (without squishing connectors on the small ends of the unit) and a reasonable return to the pre-experiment status of the Rb standard's XO, once places right sid= e up again. Brooke's measured deviation for 2g "inversion" is ~3*1e-12 which is probably very credible for an xtal not designed to avoid such deviation in the first place. --Peter --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .