Category: GravityNotes

Comment on Earthquake Seismograph Using Bismuth Magnetic Levitator – about state of the art in low cost gravitational detector arrays

Richard K Collins Collaborative Global Model of the Sun, Electromagnetic Gravitational Field, Gravitational Engineering, GravityNotes, Solar System Colonization, Sun Moon Vector Tidal Signal November 3, 2021

Earthquake seismograph using bismuth magnetic levitator as sensor at https://www.youtube.com/watch?v=aIANNzpec7Y Tomislav Stimac, The “standard” still for accelerometers is the small but global network of super conducting gravimeters (SGs). They use liquid helium cooled niobium magnetically levitated spheres as the test mass. The sensitivity is about 0.1 nanometers per second squared (nm/s2) at 1 sample per second.
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Comment on Video about laser interferometer design and use – replace superconducting gravimeters

Richard K Collins Experimenting, Gravitational Engineering, GravityNotes, Schools, Universities, Learning and Working, Sun Moon Vector Tidal Signal August 26, 2021

Counting Atoms with the Doppler Effect – Heterodyne Interferometer by Sam Zeloof at http://sam.zeloof.xyz https://www.youtube.com/watch?v=vPu6lN9yJOY Sam, I sent you an email about using this to replace the network of superconducting gravimeters with something more people can afford. You have several orders of magnitude available to you by very small adjustments. SGs cost several hundred thousand and
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Plans for measuring the speed of gravity again, using superconducting gravimeter and related sensor networks

Richard K Collins All Sky Cameras, Electromagnetic Gravitational Field, Gravitational Engineering, GravityNotes, Open Algorithm Development, Schools, Universities, Learning and Working, Sun Moon Vector Tidal Signal August 26, 2021

One linear regression is all that is needed to useg JPL Ephemeris to separate the sun moon from earth-based signals I want to repeat the SG network speed of gravity measurement I did in 2003 using all the current stations. I will also use the best of the broadband seismometers from IRIS.edu. Any absolute measurements,
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Some Notes on applications for MEMS gravimeters and their global calibration

Richard K Collins Gravitational Engineering, GravityNotes, Open Algorithm Development, Sun Moon Vector Tidal Signal August 6, 2021

Marley, For the last 20 years or so, I have been tracking gravimeter developments, hoping one day they could be developed enough to use in low cost gravitational imaging arrays. I don’t have my notes on what I wrote to you. My memory is that I saw you were at “earth tide” sensitivity. That is
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Gravity and Temperature, gravity and pressure

Richard K Collins Electromagnetic Gravitational Field, Experimenting, GravityNotes, Radiation Channels July 17, 2021

Shawn, What I am saying is that the energy density of the radiation field of the earth, which you can map by mapping the temperature is just “gravitational field stuff”. The magnetic field of the earth which you can convert to magnetic energy density is also made of “gravitational field stuff”. The gravitational field of
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Gravitational, Magnetic and Electric Field Changes from Global Climate Change

Richard K Collins All Sky Cameras, Collaborative Global Model of the Sun, Electromagnetic Gravitational Field, Gravitational Engineering, GravityNotes, Radiation Channels, Symbolic Mathematics July 17, 2021

I wrote yesterday about magnetism and gravity and temperature at gravimeter and related sensor array detector sites. I give averages over all frequencies, but the fine details can be tracked across all frequencies from picoHertz to ZettaHertz. Relation between gravity, magnetism and temperature at the earths surface at /?p=1893 Today I realized that if global
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Comment on Endaq Steve Hanly blog about accelerometer sensitivity

Richard K Collins Collaborative Global Model of the Sun, Electromagnetic Gravitational Field, Gravitational Engineering, GravityNotes, Open Algorithm Development, Schools, Universities, Learning and Working, Solar System Colonization July 17, 2021

Accelerometer Specifications: Deciphering an Accelerometer’s Datasheet by Steve Hanly https://blog.endaq.com/accelerometer-specifications-decoding-a-datasheet I see you mention temperature sensitivity. I am writing an article on gravimeters and recommending different ones. Someone estimated their response to temperature. It can be estimated for gravimeter arrays. Here is how I estimated it. Relation between gravity, magnetism and temperature at the earths
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Why the sun moon tidal signal is so important for helping global sensor arrays with calibration

Shawn, I worked with the US Agency for International Development, the US State Department, World Bank and many international organizations. Most countries cannot afford to do their own mineral exploration, so outsiders come and take what they have. I helped put microcomputer training and technology into that system so that some countries could afford to
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Relation between gravity, magnetism and temperature at the earths surface

Richard K Collins Electromagnetic Gravitational Field, Gravitational Engineering, GravityNotes, Radiation Channels, Solar System Colonization July 16, 2021

I wrote this yesterday, and then realized that if global climate change increases the global temperature by 1 degree then that will change the readings at all accelerometer sites. But the (word that starts with i) at NASA and other places don’t give you the absolute temperature time series, only the change. But the impact
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Comment on my video Windows USB GPS Device Based on UBlox Chip and UCenter Software

Richard K Collins All Sky Cameras, Atomic Fuels, Collaborative Global Model of the Sun, Electromagnetic Gravitational Field, Experimenting, Gravitational Engineering, GravityNotes, Schools, Universities, Learning and Working, Solar System Colonization July 16, 2021

Windows USB GPS Device Based on UBlox Chip and UCenter Software https://www.youtube.com/watch?v=uJZHVKGrl6Y @Ali Zitouna Hamed, I am not sure what you mean by “base ntrip”. I made this long ago and have not used UBlox lately. Since then i have been working on software defined radios, electromagnetic interference, gravitational wave detection, imaging arrays for gravitational
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