pulse relay
101Invention of radio — Great Radio Controversy redirects here. For the album by the band Tesla, see The Great Radio Controversy. Contents 1 Physics of wireless signalling 2 Theory of electromagnetism …
102British African-Caribbean community — For Caribbeans in the UK of Indian origin, see British Indo Caribbean community. British African Caribbean (British Afro Caribbean) Total population UK, 2001: 565,900 …
103Brevity code — Contents 1 American/NATO codes 1.1 A 1.2 B 1.3 C …
104North American railroad signals — Main article: North American railway signaling Baltimore and Ohio Railroad Color Position Light bracket masts at Magnolia, West Virginia North American railroad signals generally fall into the category of multi headed electrically lit units… …
105laser — /lay zeuhr/, n. Physics. a device that produces a nearly parallel, nearly monochromatic, and coherent beam of light by exciting atoms to a higher energy level and causing them to radiate their energy in phase. Also called optical maser. [1955 60; …
106Debit card — Personal finance Credit and debt Pawnbroker Student loan Employment contract Salary Wage Empl …
107Electrical telegraph — A printing electrical telegraph receiver, and a transmitter key at bottom right An electrical telegraph is a telegraph that uses electrical signals, usually conveyed via telecommunication lines or radio. The electromagnetic telegraph is a device… …
108Global Positioning System — GPS redirects here. For other uses, see GPS (disambiguation). Geodesy Fundamentals …
109Machine translation — Part of a series on Translation Types Language interpretation …
110Portland, Oregon — Portland   City   City of Portland Portland s skyline from the west, with Mount Hood on the left …
