Nils Berglund: A simplistic model for tides – instantaneous forcing at https://www.youtube.com/watch?v=XH7tvGb42s4 The easiest model that works precisely is to use the positions of the sun, moon, and earth from JPL Horizon. Then for a particular point on earth (station) calculate the vector GM/r^2 acceleration of the sun acting on the station, minus the sun
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https://twitter.com/RichardKCollin2/status/1741046739237228715 Sensitive three axis gravimeters show that vector sun moon tidal signals are nearly perfectly Newtonian, only requiring three linear regressions (6 numbers) to lock a station to the sun and moon for position and orientation sensing. Many types now. https://twitter.com/RichardKCollin2/status/1693165581329985565 This is one month for the vertical component of the vectors signal.
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Utilizing the Impact of Earth and Atmospheric Tides on Groundwater Systems: A Review Reveals the Future Potential https://www.researchgate.net/publication/332292753 You might want to know that MEMS gravimeters and many kinds of three axis gravimeters can follow earth tides in real time. The three axis broadband seismometers at quiet stations follow the sun moon tidal signal closely.
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Donnie Mason, I was just enjoying the graphs and data at NuDat 3.0. I have been reading and using table of isotopes for over 50 years. It is finally getting to where it is easy to use. I was looking at Q beta-, Q beta+ and Q EC for all the isotopes and the CSVs
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Cool Worlds Podcast: #5 Kathryn Johnston – The Milky Way, Dark Matter vs MOND, Gaia at https://www.youtube.com/watch?v=UHNYvK4-MJY Kathyrn Johnston, The vector tidal signal at a superconducting gravimeter or more modern gravimeter detector shows a nearly pure Newtonian signal. You can get the JPL time series of precise positions for the sun moon earth every second, use
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Richard: Jifemenko, Biot-Savart, Forward, Newtonian gravitational signals, time of flight forces and signals, Famine I measured the speed of gravity and found that it was the potential itself that was diffusing, not the force or acceleration. The potential at the earth is already there but it receives updates from the other bodies in the solar
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Richard: From the photosphere out, what is the mass of the solar atmosphere in earth masses? OpenAI Chat GPT Plus 4.0: As of my knowledge cutoff in September 2021, I don’t have precise information on the total mass of the solar atmosphere (including the chromosphere, the transition region, and the corona) in Earth masses. The
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Physics @Berkekey: Oct 13 Colloquium: Konrad Lehnert at https://www.youtube.com/watch?v=qbqTWe1qBbY Konrad Lehnert, Three axis MEMs gravimeters can be made sensitive enough to measure precisely the vector tidal sun moon signal that is the main part (about 98.5%) of the signal at a superconducting gravimeters station. Using the JPL ephemeris this is just the sun’s acceleration at the
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Richard Behiel: The Beauty of Linear Regression (How to Fit a Line to your Data) at https://www.youtube.com/watch?v=my3lsV-VQjs Richard Behiel, The vector tidal gravity signal from the sun moon and earth at a superconducting gravimeter station is simple Newtonian GM/r^2. The suns vector acceleration on the station, minus the suns acceleration on the center of the earth.
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Prasad Raju, I suggest you use online resources to look at the data. There is a lot of seismometer and magnetometer data. There is meteorological data. If you just want sources of interesting signals, there is some good solar data (solar dynamics observatory), data from lots of astronomical and astrophysical surveys. Radio telescope data
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