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Mechanical Watch
Interactive article explaining how a mechanical watch works.
Most cited
Posts that commenters keep linking to, ranked by how many different people have cited them in Hacker News comments. 28 posts.
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Safe to swim in nuclear spent fuel pool?
What if I took a swim in a typical spent nuclear fuel pool? Would I need to dive to actually experience a fatal amount of radiation? How long could I stay safely at the surface?
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The control group is out of control (2014)
I. Allan Crossman calls parapsychology the control group for science. That is, in let’s say a drug testing experiment, you give some people the drug and they recover. That doesn’t tell …
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GPS
Interactive article explaining how GPS works.
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Galactic-Scale Energy (2011)
[ An updated treatment of this material appears in Chapter 1 of the Energy and Human Ambitions on a Finite Planet (free) textbook , and also appears as part of an article in Nature Physics in 2022.]
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Seriously bright light vs. winter blahs
Most SAD light therapy lamps are not bright enough. How to get brighter light than any you can buy!
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Contra Wirecutter on the IKEA air purifier
The Wirecutter’s review of the IKEA air purifier is a mishmash of scientific errors, shoddy testing, and self-contradictory logic.
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I should have loved biology
In biology class, biology wasn't presented as a quest for the secrets of life. The textbooks wrung out the questing.
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The Scaling Hypothesis (2021)
On GPT-3: meta-learning, scaling, implications, and deep theory. The scaling hypothesis: neural nets absorb data & compute, generalizing and becoming more Bayesian as problems get harder, manifesting new abilities even at trivial-by-global-standards-scale. The deep learning revolution has begun as foretold.
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Why I Am Not An Integrated Information Theorist (or, The Unconscious Expander)
Happy birthday to me! Recently, lots of people have been asking me what I think about IIT—no, not the Indian Institutes of Technology, but Integrated Information Theory, a widely-discussed &#…
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Futurist prediction methods and accuracy
I've been reading a lot of predictions from people who are looking to understand what problems humanity will face 10-50 years out (and sometimes longer) in order to work in areas that will be instrumental for the future and wondering how accurate these predictions of the future are. The timeframe of predictions that…
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Sound
Interactive article explaining how sound works.
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Holography without Lasers: Hand-drawn Holograms (1999)
I've stumbled across a technique for drawing holograms directly upon a plastic plate by hand. It sounds impossible, but I've been sitting on the livingroom sofa making holographic images of floating polyhedra, words, 3D starfields, opaque objects, etc. No laser, no isolation table, no darkroom, no expensive film…
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We're going to need a lot of solar panels
The team at Terraform Industries is now 11 people working towards a near term future where atmospheric CO2, much of it centuries of unpriced industrial waste, becomes the preferred default source o…
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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.”
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You're Not Losing Fat Because You're Eating Too Damn Much (2016)
The environmental and cognitive factors at play that have people eating more without realising.
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The rise and fall of peer review
Why the greatest scientific experiment in history failed, and why that's a great thing
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The swimming of a dead fish (2018)
When I was a child, my father would take me trout fishing, and I spent hours marveling from the riverbank at the trouts’ ability to, seemingly effortlessly, h
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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
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Noether's Theorem in a Nutshell (2020)
Noether's theorem is an amazing result which lets physicists get conserved quantities from symmetries of the laws of nature. Time translation symmetry gives conservation of energy; space translation symmetry gives conservation of momentum; rotation symmetry gives conservation of angular momentum, and so on.
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Geniuses of the past were aristocratically tutored
Aristocratic tutoring I: Explaining the decline of genius
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Perl Saved the Human Genome Project (1996)
The human genome project was inaugurated at the beginning of the decade as an ambitious international effort to determine the complete DNA sequence of human beings and several experimental animals. The justification for this undertaking is both scientific and medical. By understanding the genetic makeup of an organism…
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What is a black start of the power grid?
[Note that this article is a transcript of the video embedded above.] November 1965 saw one of the most widespread power outages in North American history. On the freezing cold evening of the 9th, the grid was operating at maximum capacity as people tried to stay warm when a misconfigured relay tr
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The flood that filled the Mediterranean Sea - in one year
"Zanclean Megaflood? What's that, a glam-rock band?"
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How “See a Satellite Tonight” Works
See A Satellite Tonight is my most successful side project so far, with 5 million users since launch in 2019. It's been entirely a solo project, and I've used it as a proving ground for a bunch of tech that I wanted to learn. It took dozens of APIs and services to put together the experience I wanted: The front page…
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