Coffee Chat – Trade your expertise

Does the same job

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The easiest way to book time with professionals you admire
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Connect with experts over coffee
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Like Slack, but opensource and self-hosted.
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Send coffee/beer as an appreciation gift to colleagues
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I find your next coffee spot.
Espresso Chat2016 · ▲216
Productive conversations start here

TL
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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

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