Life & fun · September 17, 2014
Memory Chimp – How good is your working memory?
Does the same job
all alternatives →
- STSupermind – The easiest way to improve memory in all you do2020 · superm.in · ▲74
Second Brain for Mac and WindowsJul 2026 · thesecondbrain.dev · ▲247Your AI memory, everywhere you work
TwinMind: AI Second Brain for Mobile2025 · ▲228Remember meetings, lectures, or your entire life for free
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Photosynthesis fires two of your iPhone
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Life & fun · 28d ago · solouno.io
Scroll through all 43,252,003,274,489,856,000 reachable Rubik's Cube permutations.
Life & fun · 26d ago · everycube.alen.is
Hi HN, I built Eigendrum, a web tool that solves the 2D wave equation for arbitrary shapes so you can hear what they sound like as drums. How it works: * Solves -∇²u = λu using finite element analysis (Kφ = λMφ) on a triangle mesh. * Validated to <0.1% error against closed-form solutions for circles (Bessel zeros) and rectangles. * Sound model factors in strike location, Rayleigh damping, and mallet width. * Includes Kac drums I & II to demonstrate identical sound spectra from different geometries. * No frameworks, build steps, or dependencies. Repo and tests:…
Life & fun · 26d ago · baselashraf81.github.io
