electromechanical check
41Bureau of Diplomatic Security — See also U.S. Diplomatic Security Service (DSS) Badges of U.S. Diplomatic Security Special Agent, Diplomatic Courier, and Security Engineer …
42Pedal keyboard — The 30 note pedalboard of a Rieger organ. A pedalboard (also called a pedal keyboard, pedal clavier, or, with electronic instruments, a bass pedalboard[1]) is a keyboard played with the feet that is usually used to produce the low pitched bass… …
43Computer reservations system — A computer reservations system (or central reservation system)[1] (CRS) is a computerized system used to store and retrieve information and conduct transactions related to air travel. Originally designed and operated by airlines, CRSes were later …
44APEXC — The APEXC, or All Purpose Electronic X Ray Computer was designed by Andrew D. Booth at Birkbeck College, London in the early 1950s. From 1943 on, he started working on the determination of crystal structures using X ray diffraction data. The… …
45Centralized traffic control — (CTC) is a signalling system used by railroads. The system consists of a centralized train dispatcher s office that controls railroad switches in the CTC territory and the signals that railroad engineers must obey in order to keep the traffic… …
46OTRAG — For the rocket, see OTRAG (rocket). OTRAG (German: Orbital Transport und Raketen AG, or Orbital Transport and Rockets, Inc.), was a German company based in Stuttgart, which planned in the late 1970s and early 1980s to develop an alternative… …
47List of Ig Nobel Prize winners — This is a list of Ig Nobel Prize winners from 1991 to the present day. A parody of the Nobel Prizes, the Ig Nobel Prizes are given each year in early October around the time the recipients of the genuine Nobel Prizes are announced for ten… …
48Titan Industries — Infobox Company company name = Titan Industries company vector company type = Joint venture genre = foundation = 1987 founder = location city = Hosur, near Bangalore location country = India location = origins = Tata Group, TIDCO (Tamil Nadu… …
49Armature (electrical engineering) — In electrical engineering, an armature is one of the two principal electrical components of an electromechanical machine a motor or generator. The other is the field winding, field magnet. The role of the field component is simply to create a… …
50Marian Rejewski — (probably 1932, the year he first solved the Enigma machine). Courtesy of Janina Sylwestrzak, Rejewski s daughter. Born Marian Adam Rejewski August 16, 1905(1905 0 …
