date: 2022-09-04 13:14:02
slug: 04-131402
status: published
display_format: short-note
link: https://jj.isgeek.net/2022/09/04-131402/
reply_to: {"url": "https://twitter.com/DocJohnG/status/1566388799550197762?s=20&t=BYQIS_BPpXxm0sQkfOdaIA", "is_image": false, "twitter": true, "summary": "@samuelmehr Yes, I like the symmetry.\n\nBut I don't see any inherent \"rationality\" in the weirdly odd numbers themse\u2026 https://t.co/iqp1ewgEG1", "author": {"name": "Dr. John Grohol \ud83c\uddfa\ud83c\udde6", "username": "DocJohnG", "url": "https://t.co/yqm1tVIfNr", "image": "https://bm.isgeek.net/b2/17/1f80c28d3717bda541b6e0f688982e42e143c5b706d09189884a0a80df82.jpg"}, "site_name": "Twitter"}
titleless: True
syndication: https://twitter.com/jjdelc/status/1566414289312911362
title: Sep 04 2022 - 01:14:02 PM
mentions: [{"source": "https://brid.gy/like/twitter/jjdelc/1566414289312911362/16854190", "title": "", "url": "https://twitter.com/jjdelc/status/1566414289312911362#favorited-by-16854190", "author": {"name": "Dr. John Grohol \ud83c\uddfa\ud83c\udde6", "photo": "https://bm.isgeek.net/8e/ff/dd934592a63664ba78493acba3c8369ef70390a358751029a84197c1fbd1.jpg", "url": "https://twitter.com/DocJohnG"}, "is_like": true, "via": "brid.gy"}, {"source": "https://brid.gy/like/twitter/jjdelc/1566414289312911362/26460550", "title": "", "url": "https://twitter.com/jjdelc/status/1566414289312911362#favorited-by-26460550", "author": {"name": "James Green \ud83c\uddf3\ud83c\uddff \ud83c\uddee\ud83c\uddea", "photo": "https://bm.isgeek.net/6b/6a/c2660f0a321fa85d01aeab74eabab55c931087e54cf96a1c96acc30cd7bd.jpg", "url": "https://twitter.com/ajamesgreen"}, "is_like": true, "via": "brid.gy"}]


Those numbers are so the paper ratio is half sqrt of two. `(2*841/1189)^2 = 2` while keeping A0 be 1sqm in area `841x1189/1e6 = 1`. Then the area of a `An` paper is `2^(-n)sqm`