rotary-field motor
41Three-phase electric power — This article deals with where, how and why three phase is used. For information on the basic mathematics and principles of three phase, see three phase. Three phase electric power is a common method of alternating current electric power… …
42History of the single-lens reflex camera — The history of the single lens reflex camera predates the invention of photography in 1826/27 by one and a half centuries with the use of a reflex mirror in a camera obscura first described in 1676. Such SLR devices were popular as drawing aids… …
43psychomotor learning — Introduction development of organized patterns of muscular activities guided by signals from the environment. Behavioral examples include driving a car and eye hand coordination tasks such as sewing, throwing a ball, typing, operating a… …
44Список ликвидированных автопроизводителей США — Это список ликвидированных автопроизводителей Соединенных Штатов. Они были ликвидированы по различным причинам, таким как банкротство материнской компании, слияние или другая причина. Содержание: Top  0–9 А Б В Г Д Е Ж З И Й К Л М Н О П Р С… …
45Uninterruptible power supply — A small free standing UPS …
46Solenoid — A solenoid is a three dimensional coil. In physics, the term solenoid refers to a loop of wire, often wrapped around a metallic core, which produces a magnetic field when an electric current is passed through it. Solenoids are important because… …
47Diffusion of technology in Canada — This article outlines the history of the diffusion or spread of technology in Canada. Technologies chosen for treatment here include, in rough order, transportation, communication, energy, materials, industry, public works, public services… …
48automobile — automobilist /aw teuh meuh bee list, moh bi list/, n. /aw teuh meuh beel , aw teuh meuh beel , aw teuh moh beel, beuhl/, n. 1. a passenger vehicle designed for operation on ordinary roads and typically having four wheels and a gasoline or diesel… …
49Airship — For other uses, see Airship (disambiguation). Dirigible redirects here. For the 1931 film, see Dirigible (film). Not to be confused with Balloon (aircraft) or Blimp. Airship …
50List of defunct United States automobile manufacturers — Below is a list of defunct United States automobile manufacturers from the 1800s to the present.A *ABC (1906 1910) *ABC (1922) *Abbott Detroit (1909 1916; Abbott 1917 1918) [Abbotts were built in Cleveland. Clymer, Floyd. Treasury of Early… …
