Why is Coax 50 Ohms? (#340) at https://www.youtube.com/watch?v=I-OnQZJv35I Thanks! Your explanation of 50 ohm cables was very helpful. I wrote a long comment about vacuum impedance you might find interesting. Richard Collins, The Internet Foundation I was going over transmission line theories and trying to get a better feeling for the vacuum impedance which CoData gives
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Relativity Space @relativityspace Could you 3D print an LNG tanker? Rolling and forming solid metal into rounded shapes takes a LOT of equipment and people. Trying to see what happens to the grain boundaries. I think it could be lighter and cheaper, micro-welded if not melted from wires. https://www.youtube.com/watch?v=m2qYd79ZChQ
Zhigang Suo @zhigangsuo 23h The new book by @LallitAnand, Ken Kamrin, @SGovindjee arrived today. The authors state that the book is for a course for undergraduate juniors and seniors. Topics include Elasticity Plasticity & creep Fracture & fatigue Viscoelasticity Rubber elasticity https://pic.twitter.com/mWhbXpAVKy Replying to @zhigangsuo @LallitAnand and @SGovindjee Now make it into an online toolkit
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Correlating LIGO style strain and auxiliary data with all data from earth-based sensor networks I followed many of the pathways from this email looking for downloadable data on the Internet accessible from the browser. All I found was your groups favorite software ways to access things you are interested in. And nowhere did I find
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The reference sound pressure is 20 microPascal, often referred to as “limit of human hearing” in one of those super quiet rooms. Find Common sound pressures on Wikipedia “Sound pressure”. You might convert pressure to power Pascal = Newtons/meter^2 = Newton*Meters/Meter^3 = Joules/Meter^3 = (Watts/Meter^2)/(Meters/second). Pressure = Force/Area = Force*Distance/Area*Distance = Energy/Volume = (Power/Area)/(Velocity) Power/Area
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Real Capacitors at https://www.youtube.com/watch?v=hlmPFbHTHTw Sabrina Koffler, You could easily have shown the behavior of a few “real” capacitors as a function of frequency. And added a variable resistance and inductance to show the effects of changing those. Design, testing, measurement is all about numbers, data collection. More and more that also means models, algorithms, comparison between
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Paul Rayson, The reason the OpenAI Bing ChatGPT fails is because it uses a bad tokenizer. If the part of speech community would work together, they could standardized the part of speech tokens and code the entire Internet. So it would not have to be scanned and parsed every time. A pre-tokenized, pre-coded, internet would
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ROSES 2021 Unit04: Distributed Acoustic Sensing with Dr. Eileen Martin at https://www.youtube.com/watch?v=psv1bgy5LUg You might want to edit this to remove the first few minutes where nothing is said. And put links in the description to Eileen’s work and group(s). This would be so much easier if you would just share your mathematics in symbolic mathematical form
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Twitter comment on Physical Review Letters @PhysRevLett Feb 13 Measurement of the Electron Magnetic Moment to 0.13 parts per trillion (replacing a limit from 14 years ago). Letter: https://go.aps.org/3E3jjSX Viewpoint: https://go.aps.org/3xfgeLT Replying to @PhysRevLett — One of my favorite experiments. Thanks. I particularly like “according to quantum physics, the vacuum is teeming with virtual particles”. Except I
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Your message has been sent at Friday, 20 January 2023 – 07:38. Thank you for your feedback. The Feedback form is locked but not marked as such: I got an email immediately – “atlas-public-web-feedback@cern.ch Your message can’t be delivered because delivery to this address is restricted.” They did not send back my message. Courteous, world
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