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.

Comment on video to measure wavelength of sound and apply reasoning

Waterloo Double Slit 1 at https://www.youtube.com/watch?v=acgb5uP4CBM David, I think it would help viewers if you draw a wave on a transparency and overlay it onto another wave to show what is happening. Put two arbitrary time series and look where they match or do not as the time difference changes. Put a time series made
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Low frequency variations of high frequency signals

I have been looking at the general situation of tracking and studying slow variations of fast signals.  If you have a star, its main signal is likely electromagnetic or gravitational.  You track its “colors” with an FFT or spectrometer, and perhaps its slow variations up to decades of years or longer. (“pulsar” OR “pulsars”) “MHz”
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Comment to a private group on Facebook about DNA genealogy

This group has grown to over 100,000 members. I see some wonderful advice that should probably be in a globally accessible form. This is a “private” group, so nothing posted here is seen or indexed and available except to people who join. I have helped more than a hundred people with finding their birth parents,
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Notes about PixInsight on Houston Astonomical Society Facebook closed group

I have not used PixInsight, but read what they are doing at https://pixinsight.com/. The commercial license is 230 Euros (about $275). They have free versions, but not sure what limitations, if any. All their image processing workshops listed are from 2017. There are software tutorials by their “PTeam” members at https://pixinsight.com/tutorials/index.html I do not know how many
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Comment on Google Search Hints for Search for Melting point of Al2O3

https://www.google.com/search?q=melting+point+of+al203 You are giving Fahrenheit temperatures on the Internet, and the global standard is SI. You are not only serving the few people in the world who are still not using Metric, but everyone. Or you ought to. K is the abbreviation for Kelvin. So it looked like you are giving 2.07 Kelvin at first
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Comment on Optical fiber coupling to photonics chip

Optical fiber coupling to photonics chip by Wojciech Lewoczko-Adamczyk at https://www.youtube.com/watch?v=rHcfemtfP2s Suggest you use the whole screen for the graphs, equations, diagrams. It is too small to read easily and I do not need to see your face while you are looking at the screen. Such are called “screen videos”, where you and the viewer
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Video about NASA.gov – draft sketch of some issues and ideas

Ben NASA Profile Video 1 Trying to summarize the methods and issues and goals https://www.youtube.com/watch?v=aARsXPWQnRo This is a draft review of some NASA.gov pages. I am trying to formalize and simplify the recommendations for the whole Internet. NASA is so important to the human species right now. If this solar system colonization goes smoothly and
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Comment on “Aerodynamic Center and Center of Pressure location. Computation and Misconceptions”

​At https://www.youtube.com/watch?v=67eTLeNwLgE Alexander, You are using what looks like to be a good computer tool for these calculations and visualizations. But you don’t explain your tools and give links to let others know what to use, or what you recommend. I watched your hysteresis video. It is really shaky and hard to watch. You could use
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Equation Accessibility on ScienceDirect.com, Encouraging Global Collaboration

I like the MathML and equation accessibility of your pages. I am at https://www.sciencedirect.com/topics/engineering/observability right now. But suggest you integrate some tools to immediately use the equations.  You have LOTS of them on your site, and they are disconnected fragments. Collectively they can change the world. And, there is no sense of community on this
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NASA Web methods, policies, practices, staff, training, purpose

Emily, I have not forgotten about you and NASA.gov. In fact, I spent many full days checking different aspects of what is going on, who is doing it, who it serves, how much (if any) user involvement is allowed, the level of practice shown in the pages, integration (or not) with contractors and federal agencies,
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