Life & fun · December 11, 2014
A simpler, more convenient travel experience
Does the same job
all alternatives →- TSTravel spontaneously on a budget2018 · wander.am · ▲238
- SFStretch – Free limousine rides2017 · stretchcorp.com · ▲168
- WMWelcome Makes Travel Easier2019 · welco.me · ▲5

- MWMeetup with other travelers in a new place2022 · travelfriends.xyz · ▲235
- HSHopOn – Simple and Social Way to Book Travel2015 · hopon.com · ▲43
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Photosynthesis fires two of your iPhone
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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