No edit summary |
No edit summary |
||
| Line 85: | Line 85: | ||
* [http://www.pawfal.org/dave/blog/2015/11/pixel-quipu/ Pixel Quipu] by Dave Griffith | * [http://www.pawfal.org/dave/blog/2015/11/pixel-quipu/ Pixel Quipu] by Dave Griffith | ||
=== Pulleys and Machines === | === Pulleys and Machines === | ||
* [http://www.lowtechmagazine.com/2010/03/history-of-human-powered-cranes.html History of Human-Powered Cranes] | |||
* [[wikipedia:de:Flaschenzug|Flaschenzug]](de) | * [[wikipedia:de:Flaschenzug|Flaschenzug]](de) | ||
* [[wikipedia:en:Pulley|Pulley]] | * [[wikipedia:en:Pulley|Pulley]] | ||
=== Signalling === | === Signalling === | ||
* [[wikipedia:de:Schnurtelefon|Schnurtelefon]] (de) | * [[wikipedia:de:Schnurtelefon|Schnurtelefon]] (de) | ||