Category: Gravitational Engineering

A large fan base is good, but conscientious curation, indexing, and open sharing is better

Zhigang Suo @zhigangsuo When I was a graduate student, Kyung-Suk Kim introduced me to the Feynman’s Lectures on Physics.  Feynman’s joy in talking physics plainly, without embellishment and intimidation, has made a lasting impression on me. https://feynmanlectures.caltech.edu Zhigang Suo, I was reading Feynman’s Quantum Electrodynamics this morning. He often refers to things he said in his
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Most things now can be precisely modeled and scheduled, and sold as services

Physical Review Letters @PhysRevLett Stress propagation in active solids induces spontaneous actuation of floppy modes without exciting vibrational modes Letter: https://go.aps.org/4aViIjP Focus: https://go.aps.org/3XdD2K1 https://pic.x.com/ypc3kwl43d Replying to @PhysRevLett Frequencies and directions and timings can be precisely modeled. Whether in solids, liquids, gases or plasmas. I am not sure why you treat it as something unusual. You
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Small experiments with outstanding noise – shared globally for learning and development

Julian Stirling @stirling_julian I’m delighted to still be publishing papers almost 2 years after leaving academia to become freelance. This article is more of a “rant with references”, I try to tackle the problem of perverse incentives that prevent open science from flourishing. https://royalsocietypublishing.org/doi/10.1098/rsta.2023.0215 Replying to @stirling_julian There are fundamental experiments that can examine fundamental
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Nancy Grace Roman Galactic Plane Survey – Gravitation signals from many alien civilizations

Nancy Grace Roman Space Telescope,  If I were going to look at the Galactic Plane now, I would look for evidence of civilizations of two types.  The human species is going to produce intelligent machines. Their size and shapes and abilities are open. But in terms of human knowledge one very likely outcome is that human
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Humans can colonize Milky Way Galaxy through intelligent devices, and search for gravity signals

Humans can colonize Milky Way Galaxy with intelligent devices, and search for gravity signals. — Galactic civilizations using intelligent devices can live billions of years. So the most likely “species” for human devices to meet would be intelligent devices. Nancy Grace Roman Space Telescope might look for intelligent messages in the galactic plane. And space
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Eventually all the vacuum, quantum, noise and gravitational engineering groups will work together

Put the data from your devices on the Internet and share it live 24/7 with everyone in the world, so it is “all humans” not just “us”, then I will start to believe your words.   Archive the noise so it can be studied. You can get to where your systems are sensitive gravimeters, and
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All “exact” models have to live in the real world, even Rapunzel had supplies and an early form of Internet

Physical Review Letters @PhysRevLett An exact full set of matrix product states of highly degenerate tricritical Lifshitz points in the quantum spin model with anisotropic interactions has been discovered https://go.aps.org/3Q3Pxna https://pic.twitter.com/w22Em2B3EZ Replying to @PhysRevLett It only looks simple because you use simple potentials with no real world inputs. In the real world, every tiny cubic
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Low cost gravitational sensors for global+lunar baseline arrays, #RB_Prize

Physical Review Letters @PhysRevLett Using a Kerr optical effect, the detection sensitivity of a gravitational wave detector could be improved to enable the detection of binary neutron stars Letter: https://go.aps.org/4ally2a Synopsis: https://go.aps.org/3TL0hYv https://pic.twitter.com/Mcz2HpZTNY Replying to @PhysRevLett https://arxiv.org/abs/2310.18828 Designing low cost gravitational sensors for global+lunar baseline arrays? Individuals, small groups. Electron, Atom, Molecular, pico, nano interferometers,
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Sub nanosecond flash 3D video sampling allows gravitational imaging, “imaging accelerometry”

I am interested in your “double exposure”. 200 ns would be 5 Mfps. Can you say which specific cameras from Imperix or elsewhere can support that? I am also interested in LWIR “thermal” camera for passive radiometry. Do you have anyone interested in camera interface standards? There are many cameras, and the cost of storing
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