morse key
51Mercury-arc valve — Mercury rectifier on display in Beromünster, Switzerland before being decommissioned A mercury arc valve (mercury vapor rectifier) is a type of electrical rectifier used for converting high voltage or high current alternating current (AC) into… …
52Parity of zero — Zero objects, divided into two equal groups Zero is an even number. In other words, its parity the quality of an integer being even or odd is even. Zero fits the definition of even number : it is an integer multiple of 2, namely 0 × 2. As a… …
53bug — An insect that crawls; a slang term for a defect in a machine, also for a sending device in telegraphy which makes use of a movable, horizontal bar instead of the conventional Morse key. Verb: A slang term for torment, irritate, or worry …
54Electrical 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… …
55Continuous wave — Passband modulation v · d · e Analog modulation AM · …
56Text messaging — Texter redirects here. For the American surname, see Texter (surname). Txt msg redirects here. For the TV series, see Pop Up Video. A user typing a text message on an LG enV (VX9900) Text messaging, or texting, refers to the exchange of brief… …
57Machine taper — A machine taper is a system for securing cutting bits and other accessories to a machine tool s spindle. Contents 1 Explanation 2 Use 3 Types 3.1 Morse 3.1.1 …
58Telecommunication — A parabolic satellite communication antenna at the biggest facility for satellite communication in Raisting, Bavaria, Germany …
59Royal Earl House — (September 9, 1814 February 25, 1895) was the inventor of the first printing telegraph, which is now kept in the Smithsonian Institution. His nephew Henry Alonzo House is also a noted early American inventor.Royal Earl House spent his childhood… …
60information theory — the mathematical theory concerned with the content, transmission, storage, and retrieval of information, usually in the form of messages or data, and esp. by means of computers. [1945 50] * * * ▪ mathematics Introduction a mathematical… …
