Athanasius Kircher: Magnetic wind indicator. A complicated form of weathervane. The eagle moved by the wind, turns a cogwheel, whose movement is transferred to a pointer on a dial. A the same time a hidden magnet floating in water turns a figure of Aeolus, whose sceptre points in the same direction.*
Friday, September 16th, 2011
[ZB Magnet 3] Athanasius Kircher (1601-1680), Magnes sive De arte magnetica tripartium ( Köln: Iodocus Kalcoven, 1643), Zentralbibliothek Zürich, Alte Drucke und Rara, Z 113, fol. 322.
