Spy Paper

Paper that dissolves when it comes into contact with liquid

Does the same job

PaperLater2014 · ▲135
Your Read it Later's printed & delivered as a newspaper
AS
AlphaZero Science paper2018 · deepmind.com · ▲200
Magnetic2015 · ▲94
Reinvented paper that sticks to any surface (pre-launch)
The Paper2018 · ▲238
News from 100+ years ago, reproduced and delivered via email
Personal Paper2014 · ▲68
Personal Paper, your chosen articles printed and delivered
Papermine2014 · ▲80
Create stunning digital booklets.

TL
The load-bearing vocabulary of Claude▲703
Life & fun · 10d ago · louisabraham.github.io
iPhone app takes simultaneous images from 2 lenses, fuses into 1 photo▲329
Photosynthesis fires two of your iPhone
Life & fun · 28d ago · photosynthesis.camera
SoloUno▲310
Take control of hair pulling, nail biting & skin picking
Life & fun · 28d ago · solouno.io
Scroll through all 43252003274489856000 Rubik's Cube states▲295
Scroll through all 43,252,003,274,489,856,000 reachable Rubik's Cube permutations.
Life & fun · 26d ago · everycube.alen.is
Expeditione▲265
The Interactive 3D Encyclopedia
Life & fun · 21d ago · expeditione.fun
Eigendrum - Draw any shape and hear what it sounds like as a drum▲243
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

Stripe▲406
Payment integration and management.
Commerce · 2014
Grammarly▲390
Clear, effective, mistake-free writing.
Work · 2014
Notifyr▲336
Receive iOS notifications on your Mac
Life & fun · 2014
JustReachOut▲270
Forget PR firms, pitch relevant journalists on your own
Growth · 2014
SHRTURL▲269
Edit any webpage. Get short URL. Troll your friends!
Life & fun · 2014
Yo▲256
A simple app to say "yo" to friends
Life & fun · 2014