Life & fun · January 21, 2018

Genius Cards
Solve problems for prizes 🔥
What it does
Genius Cards is where pick or create solutions to the world's problems. Each time a new problem card is released you choose the best solutions. If you choose the solution that wins the round, you're a winner. You can also submit your own solutions for a chance to win. 💰 Prizes depend on the number of players for that round.
Does the same job
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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:…
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