871
New
The latest blog posts to take off on Hacker News. 2,038 posts.
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A high-dimensional sphere spilling out of a high-dimensional cube
Make a square, split each side into two halves, producing four cells. Put a circle into each cell such that it fills it completely. There is a small gap right in the middle of the square. Put a circle there again such that it touches the other four circles. The central circle is obviously inside the square, right?…
873
The Color of Infinite Temperature
This is the color of something infinitely hot. Of course you’d instantly be fried by gamma rays of arbitrarily high frequency, but this would be its spectrum in the visible range. This…
874
Are warp drives science now?
Science News, Physics, Science, Philosophy, Philosophy of Science
875
Ctcctcggcgggcacgtag is unique to both SARS-CoV-2 and Moderna's 2015/2016 patents
Using BLAST is easy. I'm going to show you how easy and how to prove that SARS-Cov-2 is man-made
876
Engine cooling – why rocket engines don’t melt
Rocket engines use a multitude of cooling concepts to keep them from melting themselves. Learn more about engine cooling in this article.
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Problem solving strategies in a graduate real analysis course (2010)
This is going to be a somewhat experimental post. In class, I mentioned that when solving the type of homework problems encountered in a graduate real analysis course, there are really only about a…
878
The James Webb Space Telescope – making 300 points of failure reliable
The JWST must perform a bewildering array of tasks — unfurling panels, mirrors and more — how can engineers trust telescope’s reliability?
879
Do climate models predict extreme weather?
Science News, Physics, Science, Philosophy, Philosophy of Science
880
Lab Leak 2.0?
“If a $1000 PhD side project could kill millions of people, we must end viral [gain-of-function research], or it may end us.”
881
How to grow green potassium ferrioxalate crystals from iron rust
Potassium ferrioxalate produces striking green crystals that are both beautiful and easy to grow. I'll show you how to grow them at home.
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Book Review: “Viral” by Alina Chan and Matt Ridley
Happy New Year, everyone! It was exactly two years ago that it first became publicly knowable—though most of us wouldn’t know for at least two more months—just how freakishly horr…
883
UK Now Reports Myocarditis stratified by Age & Sex After Vaccine Or Sars-cov-2
Nature Medicine paper revisited: And it is shocking
884
Decoding James Webb Space Telescope
The James Webb Space Telescope probably needs no introduction, since it is perhaps the most important and well-known mission of the last years. It was launched on Christmas day from Kourou, French Guiana , into a direct transfer orbit to the Sun-Earth L2 Lagrange point . JWST uses S-band at 2270.5 MHz to transmit…
885
CPM MagnaCut
CPM MagnaCut is a new stainless knife steel designed to be better than anything that has been available before. Is it a success?
886
DNA seen through the eyes of a coder
Updates: 12th of September 2021: I’m writing a book on DNA! If you want to become a beta reader, or have suggestions, I’d love to hear from you! 8th of January 2021: This article has been revised and updated, scientifically and in terms of dead links. Revision made by Tomás Simões (@putadagravidade /…
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There’s no such thing as a tree (phylogenetically)
1 post published by Georgia Ray on May 2, 2021
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The Hyperbolic Geometry of DMT Experiences (2016)
[Content Warning: Trying to understand the contents of this essay may be mind-warping. Proceed with caution. Featured image credit: Paul Nylander] Friends, right here and now, one quantum away, the…
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Why Retaining Walls Collapse
[Note that this article is a transcript of the video embedded above.]
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Can you drill into a supervolcano to relieve pressure? (2016)
As recently as February 2016 an article in a prestigious science journal (Nature) raises the question if a nuclear blast will have a...
893
The 8000th Busy Beaver number eludes ZF set theory (2016)
I’ve supervised a lot of great student projects in my nine years at MIT, but my inner nerdy teenager has never been as personally delighted by a project as it is right now. To…
894
Is watching the 1984 Ghostbusters movie killing people?
Is watching the 1984 Ghostbusters movie killing people? English adults under 60 who have watched the 1984 Ghostbusters movie are dying at twice the rate of people who have watched the 2021 Ghostbusters move the same age.And have been for six months. The chart may seem unbelievable or impossible but it is correct…
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Importance of muscle mass, strength and cardiorespiratory fitness for longevity
"If you have the aspiration of kicking ass when you're 85, you can't afford to be average when you're 50." —Peter Attia
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Omicron Update: Nov 27
There is a lot of anxiety.
897
The Entire History of Soviet Rocket Engines
Soviet rocket engines - this article is about their history, their development, their use and their rockets.
898
New Concerning Variant: B.1.1.529
I hope everyone in the States had a fantastic Thanksgiving (even if you’re a Dallas Cowboys football fan).
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Is my cat Turing-complete?
This article is an adaptation of a Lightning Talk I gave at CppCon2021. Link here : https://www.youtube.com/watch?v=RtqTGSOdmBo
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Science upside for Starship
This blog is a direct follow up of Starship Is Still Not Understood, and is part of the series on popular misconceptions in space journalism. Now available in audio form. I think it is relatively s…