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Internal Combustion Engine
Interactive article explaining how an internal combustion engine works.
Topics /
Science & Space
The most popular blog posts about science & space on Hacker News. 409 posts.
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Hundreds of fishing vessels vanishing along Argentina’s waters
An Oceana analysis found hundreds of foreign fishing vessels, primarily Chinese, pillaging the waters off Argentina.
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Time flies in Google Earth’s biggest update in years
In the biggest update to Google Earth since 2017, you can now see our planet in an entirely new dimension — time.
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Trials begin on lozenge that rebuilds tooth enamel
A new breath mint that rebuilds your tooth enamel while it whitens your teeth has been created by UW Researchers.
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How to grow sodium chloride crystals at home
After trying for 3 years, I found a way to grow transparent, high quality sodium chloride crystals at home. Here's my procedure.
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Conterintuitive facts in mathematics, CS, and physics
It is possible to compute over encrypted data without access to the secret key: https://en.wikipedia.org/wiki/Homomorphic_encryption
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MIT-designed project achieves major advance toward fusion energy
For the first time, a large high-temperature superconducting electromagnet was ramped to a field strength of 20 tesla, the most powerful magnetic field of its kind ever created. The demonstration helps resolve the greatest uncertainty in the quest to build the first fusion power plant that can produce more energy than…
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Curves and Surfaces
Interactive article explaining how curves and surfaces are modeled.
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Physics Student Earns PhD at Age 89
Physics is the most fundamental of sciences. It provides a foundation for ideas critical to other scientific fields and the underpinnings for modern technologies.
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Poisson's Equation
If you aren’t used to staring at math, Poisson’s equation looks a little intimidating:
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Naval Architecture
Interactive article explaining how ships float and maintain their stability.
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The health benefits of better air
Why the air you breathe matters, and what to do about it.
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Monkey MindPong
Get the latest on neurotech directly from our experts. Check out the Neuralink blog for news, insights, and behind-the-scenes looks at our work.
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Atomic resolution video of salt crystals forming in real time
Crystal close up. Capturing the Moment of Emergence of Crystal Nucleus from Disorder. © 2021 The University of Tokyo by T. Nakamuro, M. Sakakibara, H. Nada, K. Harano, and E. Nakamura
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Milky Way, 12 years, 1250 hours of exposures and 125 x 22 degrees of sky
This blog is all about astrophotography and it works mainly as an imaging diary. J-P Metsavainio is a Finnish astrophotographer,
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Reprojecting the Perseverance landing footage onto satellite imagery
The landing of the Mars 2020 Perseverance rover last month amazed the world. The stunning footage of the descent shows each stage of the sequence. If you have not seen it already you can watch it here .
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Experimental depression treatment is nearly 80% effective in controlled study
In a double-blind controlled study, high doses of magnetic brain stimulation, given on an accelerated timeline and individually targeted, caused remission in 79% of trial participants with severe depression.
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Costa Rica Has Run on 100% Renewable Electricity for 299 Days
For 75 days straight, Costa Rica ran on 100% renewable electricity
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How to make a CPU – a simple picture-based explanation
The purpose of this article is to explain how to make a CPU out of rocks and sand as fast as possible without using too many words. As the world of proprietary hardware and software crushes in around us, we risk losing the ability to make things for ourselves as individuals. It is for this reason that I felt compelled…
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A new replication crisis: Research that is less likely to be true is cited more
Papers in leading psychology, economic and science journals that fail to replicate and therefore are less likely to be true are often the most cited papers in academic research, according to a new study by the University of California San Diego’s Rady School of Management.
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Simple, solar-powered water desalination (2020)
A completely passive solar-powered desalination system developed by researchers at MIT and in China could provide more than 1.5 gallons of fresh drinking water per hour for every square meter of solar collecting area. Such systems could potentially serve off-grid arid coastal areas to provide an efficient, low-cost…
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Mammals dream about the world they are about to experience before they are born
Yale researchers observing the brains of closed-eyed baby mice found waves that help explain why mammals can navigate their environment so soon after birth.
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Why we're blind to the color blue
I'm always in the market for surprising facts. One of my favorites is that the color blue is always out of focus for the human eye. It's hard to believe since it appears that we see blue clearly, but it's astonishing when shown an example. Here', I'll explain why we're unable to focus on blue, and show examples of…
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Julia receives DARPA award to accelerate electronics simulation
Julia Computing wins DARPA award to accelerate electronics simulation 1,000x with AI & ML. Discover how Julia's unique capabilities boost US semiconductor competitiveness.
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Jump in cancer diagnoses at 65 implies patients wait for Medicare: study
Analyzing a national cancer database, researchers find a bump in diagnoses at 65, suggesting that many wait for Medicare to kick in before they seek care.
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Please commit more blatant academic fraud
This week, I was thrilled to read about the first well-documented case of explicit academic fraud in the artificial intelligence community. I hope that this is the beginning of a trend, and that other researchers will be inspired by their example and follow up by engaging in even more blatant...
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Major nuclear fusion milestone reached as ‘ignition’ triggered in a lab
Ignition is a key process that amplifies the energy output from nuclear fusion and could provide clean energy and answer some huge physics questions.
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Helion
I’m delighted to be investing more in Helion. Helion is by far the most promising approach to fusion I’ve seen. David and Chris are two of the most impressive founders and builders (in the sense...