Grit – a multitree-based personal task manager

Does the same job

TL
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Life & fun · 10d ago · louisabraham.github.io
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Eigendrum - Draw any shape and hear what it sounds like as a drum▲243
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

LC
Lofi.cafe▲1,192
Life & fun · 2021 · lofi.cafe
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Build your landing page with these 100+ tools
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PF
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Life & fun · 2021 · pdf.math.dev