Physics – RCL Circuits With Reactance and Impedance (1 of 2)
I like your video. But I put the equations and data into a spreadsheet, and could play with scenarios quickly. This is an old video. I hope you are encouraging people to use computers to manage the equations and data. Teach them to find balance and alternatives, not just memorize names and formulas. I like that it is concise, but the form (chalk and spoken words) is too hard for people to use immediately. Thanks.
I want to try combining arbitrary number of resonant circuit elements. The rules for resistors and capacitors and inductors are fairly clear. It should also be possible to combine R*(L+C) and L*(R+C) and C*(L+R) and R+L+C and R*L*C in various combinations. I have large objects made up of many tiny elements. They fit these elementary responses and properties – but not necessarily in any order. Nanomodules that come in only a few types but in any combination and numbers. I am now converting the spreadsheets to web programs (automatically) and then want to get better symbolic math tools. You have good methods, but to share with others, it needs to be embedded in good tools and formats. Large groups of people can still beat machines, but there is a limit to the size of group. But groups using computers to work together, where the material is kept in the computer, those have no limit.
I don’t think that “learning the basics” has to be done on paper or the blackboard. It is expensive to build the actual things, but most all the information needed to model anything is online somewhere. That is the problem of the Internet, to find and gather, merge and verify all the pieces, so they fit together, and are readily available. There are about 1.92 Billion “first time learners” in the world right now, from 5 to 20 years old. Many don’t have access to the Internet, or software, and must learn they way you and I did – by copying on paper, memorizing, practicing. I have tried to get some groups – Mathematica, MatLab, and others – to donate their skills and tools to make all the Wikipedia articles “living tools” so that the equations really work, can be merged, compared, tested, evaluated, calibrated – in a common forum for billions of people to see and work on. So the tables are not text on the screen that hundreds of millions of people are reading by eyeball and having to “by eye and memory” recreate the tools and calculations for the billionth time. All the number need their proper units and every page that describes a calculation or estimation should run on any data.
Sorry, I have spent the last 23 years, every day, working to find the best practices and policies for the Internet. I took over TheInternetFoundation.Org domain from Network Solutions in July 1998. They told me how the original Internet Foundation was supposed to work, and be supported by an annual fee for every domain. At $15 per year per domain, now that would be about $6 Billion a year. They asked me why I would do that alone, and I said “better one person than none at all”. Not the technical parts and the operations, though I have lots of good suggestions. But the purpose of the Internet, how it ought to work, its overall efficiency.
I see what you are doing, and I see 7.8 Billion people trying to live quality lives, or to have lives at all. And count up the cost of that in billions of days of human time lost. I was very good at global problems before I started, and with nothing else to do but answer “What is the purpose of the Internet?” and “How best to enable global communities to work efficiently, safely, and collaboratively on the Internet?” I have made a bit of progress in those years. Now I am trying to make some changes for “covid”, “global climate change”, “solar system colonization”, “basic Internet procedures and practices”.
About a billion people in the world need to know more about electricity and magnetism. The gravitational fields are expanding rapidly (I call it “gravitational engineering”) and there are not enough people trained to fill all the new jobs. And they cannot memorize things, they need to know how to run computer models, gather and process data, run calibrations, run simulations, prepare reports, design new instruments and detectors, create prototypes, test them, and work out the economic, social and financial impacts of everything they do.
Richard Collins, Director, The Internet Foundation