iso paper sizes are delicious: sides are 1:sqrt2 or about 1:1.414
A4 is 210x297mm
A4 folded in half is 148x210 or A5.
A3 is two A4s, or 297x420
go to A0 841x1189 or one square metre.
A-1 (A Minus One) is 2 square metres.
Australia is ~A-43
The visible universe ~A-179
A proton about A139.
A Quark? A151
Presumably A232 is one dimensional though, as it's planck length on the long edge.
NanoRaptor
npub1hp…lraya
2026-03-13 21:35:43 UTC
Author Public Key
npub1hp6cvgg2tqsa4fg2mh0n9x8v7nt6x4wndxqgw0ppmzlkm76rruzqnlrayaSeen on
wss://relay.momostr.pinkPublished at
2026-03-13 21:35:43 UTCEvent JSON
{
"id": "e99c03d576246488330bb985fa6b77244c9a71798605106cc31f5f47812146ab",
"pubkey": "b87586210a5821daa50adddf3298ecf4d7a355d36980873c21d8bf6dfb431f04",
"created_at": 1773437743,
"kind": 1,
"tags": [
[
"proxy",
"https://bitbang.social/@NanoRaptor/116224015979899402",
"web"
],
[
"proxy",
"https://bitbang.social/users/NanoRaptor/statuses/116224015979899402",
"activitypub"
],
[
"L",
"pink.momostr"
],
[
"l",
"pink.momostr.activitypub:https://bitbang.social/users/NanoRaptor/statuses/116224015979899402",
"pink.momostr"
],
[
"-"
]
],
"content": "iso paper sizes are delicious: sides are 1:sqrt2 or about 1:1.414\n\nA4 is 210x297mm\n\nA4 folded in half is 148x210 or A5.\n\nA3 is two A4s, or 297x420\n\ngo to A0 841x1189 or one square metre.\n\nA-1 (A Minus One) is 2 square metres.\n\nAustralia is ~A-43\n\nThe visible universe ~A-179\n\nA proton about A139. \n\nA Quark? A151\n\nPresumably A232 is one dimensional though, as it's planck length on the long edge.",
"sig": "28c7483c2ec40613b04d0310b42d5c1ba8a71c414c47a939a9a2b280783e90763a244e0fb7305c1af0794c00e6d0a06daf1dd1d462c7cf6e7d6620fb1bbb1e69"
}