Hi If you have a mountain nearby, it does indeed impact the local field. I believe they first measured that in the 1700's.
Bob On Dec 12, 2011, at 5:19 PM, Magnus Danielson wrote: > On 12/12/2011 01:37 AM, Jim Lux wrote: >> On 12/11/11 4:04 PM, Tom Van Baak wrote: >> >>> GCPC -- gravity controlled pendulum clock (elevation) >>> >> >> >> intriguing. From your parenthetical remark, I'm assuming you move the >> whole assembly up and down to adjust the speed? >> >> I was thinking about a huge mass that moves around? >> >> let's see.. period is proportional to sqrt(1/g) >> >> g is proportional to 1/r^2, so period is proportional to r. >> >> Earth is roughly 7000 km radius, so moving it 1 meter higher or lower >> changes the period by 1part in 7million... interesting. > > Hmm... how does the near-field gravitational pull behave? > > The far-field is surely r^-2, but wonder about the near-field effect. > > Need to grab some paper and pen and convince myself. > > Cheers, > Magnus > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
