For more than 50 years I have been trying to understand the gravitational potential. I used it for orbit determinations when I worked at my first job at the CIA, then later worked on a NASA project to determine the geopotential itself using satellite orbits and measurements to solve for the shape and properties of
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Everyone, I am including this as an update to this project because the routine laboratory and wide area measurement of the speed of the gravitational potential is critical to all the groups working together. You HAVE to be able to measure the signals at high enough sampling rates to get good correlations and comparisons. For
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https://www.researchgate.net/project/Solar-System-Gravimetry-and-Gravitational-Engineering I was updating my notes of gravimeter arrays as gravitational imaging arrays. At the end I recommend using electrons interferometer and related electron methods for measuring and monitoring acceleration. Every electron on earth has mass and is affected individually by the changing gravitational field. Electron methods are far in advance of atom methods, less
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Hello, I had reason to write out some of what I found measuring the speed with which the gravitational potential comes to equilibrium. It is rather long, but perhaps might be useful. I am trying to encourage the development of arrays of three axis, high sampling rate gravimeters to use for imaging sites of interest
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https://www.researchgate.net/publication/353838684 Recommend you change the title to “Can we ever replace the gravitational force model with something more practical, so we control the forces?” Mircea, Did you ever get an answer to your question? Masses with relatively small number of free charges per kilogram can have electrical forces equivalent to the gravitational force.
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https://hackaday.io/project/164550-low-cost-time-of-flight-gravimeter-arrays/log/203460-piezoelectric-film-and-fiber-three-axis-high-sampling-rate-gravimeters-for-imaging-arrays I have not posted updates here for a while, but I work on this continually. The latest possible technology that I will be trying to adapt is related to piezoelectric films and piezoelectric fibers. I have seen several efforts to use piezo disks, but not these films. As I am reading the history of these materials
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https://www.researchgate.net/project/iLens-Interferometer-towards-a-new-class-of-frugal-devices I’m interested in this research – could you provide the full-text for it? – Richard Collins I was searching arxiv.org for “piezoelectric film” “piezo film” which can be used for low cost vibration and acceleration measurements. I want to use it for a sensitive three axis gravimeter at high sampling rates. I found your
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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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Teri, I was doing a quick study on “color from structure” and related concepts. The colors of butterfly wings are often not pigments in the traditional sense, but emergent colors because of the shapes of the molecules. What clicked in my mind is that the sub wavelength structures (the structures that produce the rather large
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Jean, I was trying at least two pathways: 1. Build circuits to read the analog signals from these linear sensors, and put the fastest and best ADCs to read and store the data. The focus on high precision measurement of the signals as a function of reference voltage. 2. Somehow learn to talk to these
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