Author: Richard K Collins

Director, The Internet Foundation Studying formation and optimized collaboration of global communities. Applying the Internet to solve global problems and build sustainable communities. Internet policies, standards and best practices.

Laser self mixing and laser feedback interferometry and Fabry-Perot cavity precise position measurements

Thank you for sharing your research. – Richard I try to follow all low cost interferometry methods. I started it because of my interest in gravitational imaging arrays and gravitational wave communication. Joe Weber at Univ Maryland College Park encouraged me to work on that back in the late 1970’s. Beside photon interferometry, there is
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Comment to All Sky Camera group

https://www.facebook.com/groups/172438633343696 Can someone tell me the current best all sky set up? I was thinking of one that had zoom from all sky to 30x. Any suggestions. Thanks. I was looking at PTZ low light security cameras. Dan Bush Thank you. Your picture gallery is filled with beautiful images. I searched fro Hikvision cameras and
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Comment on Can You Modify A Car To Save Fuel?

Can You Modify A Car To Save Fuel? – Fifth Gear https://www.youtube.com/watch?v=39g5D7h7jf8 The weight reduction impact shows up if you start and stop as part of a test. Aerodynamic drag goes as the density of air times the velocity squared. You should have waited for a day identical to the first. You guys are in
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Comment on Quantifying the potential causes of Neanderthal extinction

Axel, Thank you for sharing your paper.  Academia.edu notified me that you had uploaded it.  I read it this morning, then read it again.  I wish your model was in a form that could be shared more easily. I follow groups using the internet.  I am interested in how people approach complex problems, and the
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Comment on Houston Astronomical Society website and practices

Debbie, First, your novice videos should be globally public on your website.  Either HAS is an organization devoted to all people knowing about the sky and heavens, or not.  Share openly.  If there are things specific to secure gatherings at private places, those should not be shared, but minimized or separate.  I tell groups like
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Notes related to A MEMS Resonant Lorentz-Force Magnetometer with Both Structural Topology Optimization and Parametric Pumping for Q-Factor Enhancement

A MEMS Resonant Lorentz-Force Magnetometer with Both Structural Topology Optimization and Parametric Pumping for Q-Factor Enhancement at Yuan, Life has been interesting lately. I get to work on some of the most interesting questions. Just now I am tracing down some laser wakefield capillary tube x-ray sources. The laser diode groups seem to have gotten
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Answering a question – Is it possible to accelerate neutrons?

Can ever neutrons be directly accelerated by any means of energy ? https://www.researchgate.net/post/Can-Ever-neutrons-be-directly-accelerated-by-any-means-of-energy Riccardo Bernardini This is an interesting article. But search “neutron accelerator” on Google and you get many tens of thousands of entry points. The neutron has a magnetic moment, so is affected by any magnetic gradient. Actually by any energy density gradient
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Comment on exploding wire and electron beam vaporization studies of electric polarizabiltiies

Dynamic dipole polarizability of gold and copper atoms for 532- and 1064-nm wavelengths https://www.researchgate.net/publication/330219250_Dynamic_dipole_polarizability_of_gold_and_copper_atoms_for_532-_and_1064-nm_wavelengths/comments I wrote to Gennady Sarkisov on ResearchGate about your work just now.  I was reading his Jan 2019 paper “Dynamic dipole polarizability of gold and copper atoms for 532- and 1064-nm wavelengths” at https://www.researchgate.net/publication/330219250_Dynamic_dipole_polarizability_of_gold_and_copper_atoms_for_532-_and_1064-nm_wavelengths/comments and left him this comment. ——————–  My
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Comment on Why does light slow down in water

https://www.youtube.com/watch?v=CUjt36SD3h8 You explained part of the problem, but not why it follows those paths. That takes mathematics, and you did not use any. Memorizing animations might seem a way to learn processes and use them later, but equations, measurements and precise models are better. You could have at least shown the equations, and more, provided
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Comment on Collaboration for Global Problem Solving: The Case for Food

https://www.youtube.com/watch?v=anOEGXpppIk Too bad the person running the camera did not frame the slides so they could be read. You had some good things to say, but no links to resources, nor framework. Your EAT Foundation is not linked, nor the Atkinson Center. YouTube can be a place for discussion and collaboration, but it takes a
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