translate English to German: Cardano invented several mechanical devices including the combination lock , the gimbal consisting of three concentric rings allowing a supported compass or gyroscope to rotate freely, and the Cardan shaft with universal joint s, which allows the transmission of rotary motion at various angles and is used in vehicles to this day.
1545 erschien sein Buch Ars magna de Regulis Algebraicis, in dem er Methoden zur expliziten Lösung von Gleichungen dritten und vierten Grades angab. Jedoch schuf er sich damit auch einen Feind.