rotary-field motor
71Outboard Marine Corporation — (OMC) was a maker of Evinrude and Johnson boat motors and many different brands of boats. Evinrude initially began in Milwaukee, Wisconsin in 1907. OMC was based in Waukegan, Illinois.[1] They also owned several lines of boats such as Chris Craft …
72Transrapid/German — The Transrapid is a maglev high speed train that can be used for both passenger services and goods transportation. It is manufactured and marketed by [http://www.transrapid.de Transrapid Intl. GmbH Co. KG] , a partnership of Siemens and… …
73Spark-gap transmitter — A spark gap transmitter is a device for generating radio frequency electromagnetic waves. These devices served as the transmitters for most wireless telegraphy systems for the first three decades of radio (1887 ndash;1916) and the first… …
74Lathe (metal) — Center lathe with DRO and chuck guard. Size is 460 mm swing x 1000 mm between centers A metal lathe or metalworking lathe is a large class of lathes designed for precisely machining relatively hard materials. They were originally designed to… …
75History of electromagnetism — The history of electromagnetism, that is the human understanding and recorded use of electromagnetic forces, dates back over two thousand years ago, see Timeline of electromagnetism. The ancients must have been acquainted with the effects of… …
76List of Edison patents — Below is a list of Edison patents. Thomas Edison was an inventor who, it is said, accumulated 1500 plus patents worldwide for his inventions. Nearly 1100 of Edison s patents were in the United States, but other patents were approved in countries… …
77Harry Ward Leonard — Infobox Scientist name = Harry Ward Leonard box width = image width = 229px caption = Harry Ward Leonard birth date = February 8, 1861 birth place = Cincinnati, Ohio, U.S.A death date = February 18, 1915 death place = New York, U.S.A residence =… …
78Rack 'n Roll — Infobox FRC Game game title = Rack n Roll year = 2007 number teams = 1305 [ [http://www.usfirst.org/who/content.aspx?id=160 USFIRST.org ] ] number regionals = 37 [ [http://www.usfirst.org/community/frc/regionalevents.aspx?id=430 FRC Regional… …
79publishing, history of — Introduction an account of the selection, preparation, and marketing of printed matter from its origins in ancient times to the present. The activity has grown from small beginnings into a vast and complex industry responsible for the… …
80Mechanical calculator — An old Russian mechanical calculator. A mechanical calculator is a device used to perform the basic operations of arithmetic. Mechanical calculators are comparable in size to small desktop computers and have been rendered obsolete by the advent… …
