[time-nuts] GPS Antenna on Tower.
holrum at hotmail.com
Tue Jun 20 12:34:14 EDT 2017
I just added the ability to calculate solid earth tides and the vertical gravity offset due to the sun and moon to Lady Heather. 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
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.
The attached plot shows around 5 days of data.
> Since 1cm of motion is equivalent to 30ps, there's probably not
-------------- next part --------------
A non-text attachment was scrubbed...
Size: 45865 bytes
More information about the time-nuts