2 ms·
https://www.skybrary.aero/index.php/Windsock https://www.skybrary.aero/index.php/Windsock "Windsocks must rotate freely around a vertical shaft" 10 seconds go
by ganafagol 6y ago
https://www.skybrary.aero/index.php/Windsock https://www.skybrary.aero/index.php/Windsock
"Windsocks must rotate freely around a vertical shaft"
10 seconds google for "windsock rotation". Second result right after the original article here on HN. And arguably more informative
- telesilla 6y agoYes thanks, it makes sense the posted article has an error in that regard and the link you posted is indeed more informative! Though on my search I learned that they probably originated in China or Japan, made of paper, to celebrate the birth of a child.