Life & fun · November 10, 2020

COVID-19 Personal Risk Explorer
See how COVID19 affects your life risks at home or traveling
What it does
The first and only free tool that calculates and presents the incremental risk to your life caused by COVID-19 based on your age, gender, and location. Make smarter, safer decisions at home or when traveling. Updated daily; 3400+ US counties & 160+ Countries
Does the same job
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- COCalculator of personal risk due to Covid-192020 · covidodds.com · ▲17
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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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