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Why Elephants Don’t Explode: How Nature Solves Bigness
Bối cảnh cá cược thể thao của Việt Nam đang chứng kiến sự tăng trưởng đáng kể, được thúc đẩy bởi sự phổ biến ngày càng tăng của trò chơi. Khi ngày càng
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How did Einstein Think?
John D. Norton Department of History and Philosophy of Science and Center for Philosophy of Science University of Pittsburgh http://www.pitt.edu/~jdnorton This page at http://www.pitt.edu/~jdnorton/Goodies Prepared to accompany cityLIVE! "everything einstein" November 15, 2007, 6:30 pm The New Hazlett Theater…
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Untangling the Tale of Ada Lovelace
Stephen Wolfram shares what he learned in researching Ada Lovelace's life, writings about the Analytical Engine, and computation of Bernoulli numbers.
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Lorentz forces and cheating at the Pinewood Derby
The annual Pinewood Derby in my Cub Scout troop was always an exciting time for my friends and me growing up. Just look how happy I am in this amazing digital photo composition that my dad put together using Microsoft PictureIt! 99:
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The Mysterious Aging of Astronauts
When I took Physics courses in college, I learned about how astronauts should age a tiny bit slower than us. Of course, they would be exposed to a lot more radiation so they might develop more cancers. But all in all, I would have been excited about the prospect of living in space. Then the … Continue reading The…
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Homemade Memristor (2011)
Modified curve tracer is applying AC voltage. Horizontal axis represents voltage and the vertical axis represents current. In both cases, the curve always passes through zero voltage and current. This requirement must be met in order to be classified as a memristor.
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Will Our Understanding of Math Deteriorate Over Time?
Scientific American writes about rescuing the enormous theorem (classification of finite simple groups) before the proof vanishes. How can...
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How a Handgun Works: 1911 .45
Check out Animagraffs on youtube > .
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Regression to the mean is the main reason ineffective treatments appear to work
Jump to follow-up “Statistical regression to the mean predicts that patients selected for abnormalcy will, on the average, tend to improve. We argue that most improvements attributed to the p…
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Clifford Algebra: A visual introduction (2014)
Clifford Algebra, a.k.a. Geometric Algebra, is a most extraordinary synergistic confluence of a diverse range of specialized mathematical fields, each with its own methods and formalisms, all of wh…
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Processed meats as bad as cigarettes: bad reporting on good science
Today, the WHO issued a report that says, in essence, processed meats and red meats are carcinogens. This has been reported in a variety of…
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Creating a Pluto flyby using unaligned New Horizons images
Last month, a few days before NASA’s New Horizons probe made its historic flyby of Pluto, I posted a GIF of it doing so to Reddit .
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Homemade synthetic aperture radar
Second version of the 6 GHz FMCW radar now with SAR images
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An Introduction to Quantum Field Theory
First of all, don’t panic. I’m going to try in this post to introduce you to quantum field theory, which is probably the deepest and most intimidating set of…
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What happens when Betelgeuse explodes?
It’s one of the nearest red supergiants to us, and a supernova is only a matter of time. What are we in for when it happens?
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What Did Bohr Do at Los Alamos?
Along with almost getting hit by a car, he made important contributions to the atomic bomb's design.
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Where to hate daylight saving time and where to love it
Update: a newer version of this little project helps you make your complaints about daylight saving time—whether they’re for or against it—with clearer messages about whether keeping DST, abolishing it, or making it permanent would be best for your daylight preferences. Give it a whirl over at Observable.
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Neurons Gone Wild
To reject gods and spirits is easy: just bully them away in the name of science.
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Why I decided not to enter the $100k global warming time-series challenge
Interesting applied project for your students , or as a warning for decisions under uncertainty / statistical significance. Real money on the line so the length of time and number of entries required to get a winner may be an interesting dataset after this is all done.
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Why the Greenwich meridian moved
Walk about 100 meters east of the Observatory's meridian line. Slow down to a crawl as your GPS approaches 0 degrees, 0 minutes, 0 seconds longitude. There's no sign and no line on the ground.
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GitWikXiv: Toward a successor to the academic paper
[Other posts in this series: 2,3,4.] I had the chance to have dinner tonight with Paul Ginsparg of arXiv fame, and he graciously gave me some feedback on a very speculative idea that I’ve been kicking around: augmenting — or even replacing — the current academic article model with collaborative d
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Top mathematical achievements of the last 5ish years, maybe
I have recently been going through my book Maths 1001 making updates for a forthcoming foreign edition (of which more in future). So I have been looking over mathematical developments since approxi…
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The pace of major breakthroughs has declined
One of the prevailing narratives of our time is that we are innovating our way into the future at break-neck speed. It’s just dizzying how quickly the world around us is changing. Technology is this juggernaut that gets ever bigger, ever faster, and all we need to do is hold on for the wild ride into the infinitely…
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Bell inequality violation finally done right
A few weeks ago, Hensen et al., of the Delft University of Technology and Barcelona, Spain, put out a paper reporting the first experiment that violates the Bell inequality in a way that closes off…
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CRISPR Gene Editing
CRISPR is a recently discovered genomic tool that could potentially revolutionize genetic modification and editing, including gene silencing, editing, activating, and other crucial functions. It has made a big splash in the synthetic biology community, and mentions of CRISPR have started cropping up elsewhere in the…
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