Science
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Calculating Position from Raw GPS Data
A hands-on walkthrough of how a phone turns satellite signals into a location, working through pseudoranges, orbits and…
Can You Reverse Engineer Our Neural Network?
Jane Street presents a machine learning puzzle: given a trained network and no documentation, work out what it actually…
Candle Flame Oscillations as a Clock
Bundle three candles together and their flames start to pulse in sync; this write-up explores the physics of the flicker…
cpldcpu.wordpress.com
Article
Candle Flicker LEDs With a Built-in Timer
A teardown of the tiny chips inside candle-flicker LEDs, showing how a cheap integrated circuit mimics a real flame and…
Capture the Atlas
Photography guides and galleries devoted to shooting the Milky Way, meteor showers, and other astrophotography subjects…
Cargo Airships Could Be Big
An argument that modern cargo airships could reshape global freight, covering the economics, engineering and regulatory…
Cataclysmic 1991 Eruption of Mount Pinatubo
A USGS fact sheet on the 1991 Mount Pinatubo eruption, the second-largest of the century, covering the evacuation, ash,…
Category Theory Illustrated
An illustrated, friendly introduction to category theory that starts from sets and builds up with diagrams and plain-lan…
Cave Paintings of Mushrooms
Mycologist Brian Akers examines a prehistoric painting in the Selva Pascuala rock shelter in Spain that may show psilocy…
nibblestew.blogspot.com
Article
Circles Do Not Exist
A short, playful look at why the shapes in logos and drawings that look like perfect circles usually are not, and what t…
Clare Winger Harris and the 16 Main SF Themes
An essay on a 1931 letter in Wonder Stories where pioneering author Clare Winger Harris listed the sixteen basic plots o…
Climate Change Evidence
NASA lays out the evidence for rapid climate change - ice cores, rising seas, shrinking ice sheets, warming oceans - wit…
Cognitive Science Society Blog
A blog that summarizes academic cognitive science research papers in plain language to bridge the gap between researcher…
colah's blog
The visual essay blog of researcher Chris Olah, using interactive diagrams to explain neural networks, topology, and how…
Comprehensive Mask Testing
A test report comparing surgical, 3-ply, N95, KN95, KF94, and cloth masks, measuring how well each filters particles to…
Compressing and Enhancing Hand-Written Notes
A detailed write-up of a program that cleans up scans of handwritten notes, using color clustering to shrink file size w…
Convolutions, Fast Fourier Transform and Polynomials
A friendly explainer showing how multiplying polynomials connects to convolutions and the fast Fourier transform, built…
Conway's Gradient of Life
A short, playful explainer showing how to run Conway's Game of Life backwards with differentiable automata, so that a ch…
Copper Sushi
A pretty map of the European electrical transmission network, drawn as glowing dots and lines, with an explanation of wh…
Cosmic Microwave Background Radiation
A clear primer on the cosmic microwave background, explaining what cosmology studies and how this leftover glow reveals…
Could We Stop Yellowstone from Erupting?
A back-of-the-envelope engineering look at whether drilling heat out of the Yellowstone supervolcano could prevent an er…
Counting People with Machine Learning
A project write-up on counting foot traffic from IP webcam feeds with machine learning, walking through the detection ap…
Cray-1 vs Raspberry Pi
Roy Longbottom benchmarks the legendary Cray-1 supercomputer against modern home computers, phones and tablets, showing…
Cumulonimbus Mammatus - Names of Clouds
A photo-led guide to mammatus clouds, the pouch-like bulges hanging under storm anvils, part of a site that names and ex…
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