the pinion is driven in rotation
31Guitar effects — are electronic devices that modify the tone, pitch, or sound of an electric guitar, or condition or reroute the signal in some fashion. Effects can be housed in small effects pedals ( stomp boxes ), guitar amplifiers, guitar amplifier simulation… …
32printing — /prin ting/, n. 1. the art, process, or business of producing books, newspapers, etc., by impression from movable types, plates, etc. 2. the act of a person or thing that prints. 3. words, symbols, etc., in printed form. 4. printed material. 5.… …
33Chain drive — Roller chain and sprocket Mack AC delivery truck at the Petersen Automotive Museum with chain drive visible Chain drive is a way of transmitting mecha …
34Derailleur gears — Transmission types Manual Sequential manual Non synchronous Preselector Automatic Manumatic Semi automatic Electrohydraulic Dual …
35Drum brake — A drum brake with the drum removed as used on the rear wheel of a car or truck. Note that in this installation, a cable operated parking brake uses the service shoes …
36Semi-automatic transmission — Transmission types Manual Sequential manual Non synchronous Preselector Automatic Manumatic Semi automatic Electrohydraulic …
37Non-circular gear — example Another non circular gear …
38De Dondi — Jacopo and Giovanni de Dondi (father and son) were scholars active in 14th century Padua, Italy, and are remembered today as being pioneers in the art of clock design and construction. The Astrarium, designed and built by Giovanni de Dondi over a …
39Medieval technology — Pumhart von Steyr, a 15th century supergun …
40Science and inventions of Leonardo da Vinci — Infobox Artist name = Leonardo da Vinci imagesize = 200px caption = The Vitruvian Man by Leonardo is possibly the best known drawing in the world. birthname = Leonardo di Ser Piero birthdate = birth date|1452|4|15|mf=y flagicon|ITA Anchiano,… …
