Notes
Curated notes from my memex: research notes, many of them interactive, and shorter thoughts.
Research notes
- MemexNote · 12 November 2026 · Computer scienceVannevar Bush's 1945 machine for associative memory, and the vault behind this site.
- Fast multipole methodNote · 12 November 2026 · Computer science › AlgorithmsBarnes–Hut's successor: multipole and local expansions bring the n-body sum down to O(N).
- Dislocation theoryNote · 12 November 2026 · Engineering › Material science › Dislocation theoryWhy metals bend instead of shattering: the line defects that carry plastic flow.
- Crystal plasticityNote · 12 November 2026 · Engineering › Material science › PlasticityFrom slip on one plane to the stress–strain curve of a polycrystal.
- Bravais latticesNote · 12 November 2026 · Physics › Solid state physicsThe fourteen ways to repeat a point in space, and why metals pick only three of them.
- Barnes–Hut algorithmNote · 12 November 2026 · Computer science › AlgorithmsHow a quadtree turns the O(N²) n-body sum into O(N log N), with a live galaxy collision.
Thoughts and quotes
- Theories are works of art, symphonies of thoughtNote · 12 November 2026 · ScienceTheories are works of art and they should be presented as such.
- Asking questions matters more than answeringNote · 12 November 2026Finding the questions to ask is way more important and fun than actually anwearing them.
- “As our circle of knowledge expands, so does the circumference of darkness surrounding it.” — Albert EinsteinQuote · 12 November 2026 · Philosophy