On Tue, 20 Jun 2017 16:34:14 +0000 Mark Sims <[email protected]> wrote:
> I just added the ability to calculate solid earth tides and the vertical > gravity offset due to the sun and moon to Lady Heather. Cool! How do you calculate the displacement on a fixed position receiver? > The lat/lon offset > is typically around +/- 60 cm per day. Vertical offset is around +/- > 180mm. Depending upon the day and where you are, the swings are not > symmetrical around 0.0 This might be of interest: http://www.unoosa.org/documents/pdf/psa/activities/2012/un-latvia/ppt/2-11.pdf (more papers available upon request) > Solid earth tides are a BIG factor in precision geodesy. Gravity offset is > a big issue for precision pendulum nuts. If your pendulum clock cannot > detect gravity offsets (very few can) it's not nutty enough. :-D Attila Kinali -- It is upon moral qualities that a society is ultimately founded. All the prosperity and technological sophistication in the world is of no use without that foundation. -- Miss Matheson, The Diamond Age, Neil Stephenson _______________________________________________ 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.
