You might never have heard of “Olber’s paradox”, but it is one of those perennial provacative items that gets served with most introduction to physics and astronophysics classes. For the lecturer to strut their stuff and appear learned. Olber is Heinrich Wilhelm Olbers (1758-1840) and the link is https://en.wikipedia.org/wiki/Olbers%27_paradox I like to watch the night
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Physics Magazine @PhysicsMagazine 8h Simulation videos illustrate how changing different parameters of the system alters how well two fluids mix together when stirred. (For the stirrers, tadpole and teeth shapes are best). Read the story by @astrogasparini. https://physics.aps.org/articles/v15/s104 https://pic.twitter.com/UFWWcsHeHu Replying to @PhysicsMagazine @PhysRevFluids and @astrogasparini Effectively Mixing Two Fluids at https://physics.aps.org/articles/v15/s104 If only the simulations
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Nanofocused x-ray photon correlation spectroscopy – Data link broken thru DOI.org https://journals.aps.org/prresearch/abstract/10.1103/PhysRevResearch.4.L032012 Fivos Perakis, I was reading your article and wanted to look at the data, but the link is broken. And the DOI system form to report the error is also broken. The DOI form appears but accepts no input. In the PDF: “The
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The Planck Temperature – Absolute Hot: What is the hottest temperature possible https://www.youtube.com/watch?v=ofzlBP6_5iw If you had a $Thank button, I would have sent you a donation to encourage you to keep going and work harder. You have the right kind of curiosity, but you need to keep digging and read harder papers. Tone down “strange”
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https://twitter.com/InnovationPhys https://t.co/OFNXFJh4oi @InnovationPhys You are too focused on topics suitable for single person dissertations and individual performance. Need to coordinate and encourage solutions to global issues and opportunities. Answer “Where does this apply?” and encourage open global sharing of models and data.
Integrated Water Strategies: Thinking Outside The Pipe at https://www.youtube.com/watch?v=h1Lq7COGD2Q These seem to be very expensive methods. Do you have a cost breakdown? Homes, schools, businesses, small farms, abandoned land, landfills, poor counties, poor cities, poor countries. Nothing wrong, except the world and climate change is very large. Teaching only methods – without also teaching how
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Damping and Damped Harmonic Motion at https://www.youtube.com/watch?v=qxDvW8_fm7I Don’t stand in front of the board. Use a laser pointer and stand outside the screen. Your hand waving just gets in the way. Nice presentation, if I did not have to look around you to see the equations and results. You can use a small inset with you,
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Everyone, I am including this as an update to this project because the routine laboratory and wide area measurement of the speed of the gravitational potential is critical to all the groups working together. You HAVE to be able to measure the signals at high enough sampling rates to get good correlations and comparisons. For
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Computational Microscopy by Laura Waller https://www.youtube.com/watch?v=sCCGnxRoUr4 Your diagram at 18:05 is not the way it works. Your every day matrix methods ALL are used by tens of thousands of groups and individuals all using related methods. The things you do not know, mostly there will be others who do. If you haven’t learned something yet,
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Removing heavy wind shake from FPV footage at https://www.youtube.com/watch?v=iDRJCyCKWfQ I have been collecting live video streams on the Internet for some time. I call the collection “shake wind”. Mainly beaches, bridges, mountains and places where the wind is fierce and the camera will often shake, sometimes violently. But the equation of motion of the camera is
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