Campstarter

Find the best time and place for your event

What it does

Organize your event and find the best time and place by inviting people and letting them vote.

UpCamp2017 · ▲119
Book the dates you want at the best campgrounds
Camplike2017 · ▲114
Organize or attend an outdoor event around the world
Waitlister2024 · ▲201
The easiest way to create viral pre-launch waitlists
Calendly Meeting Polls2021 · ▲215
Easily find the time that works best for everyone, for free
Pigeonhole Live2023 · ▲111
Polls, Q&A, quizzes for every event
Turnout2018 · ▲79
Make plans with text-based RSVPs

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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