message+by+telegraph
41Subliminal message — A subliminal message is a signal or message embedded in another medium, designed to pass below the normal limits of the human mind s perception. These messages are unrecognizable by the conscious mind, but in certain situations can affect the… …
42A Message From Earth — 70 m aerial P 2500 (RT 70 radio telescope) in Yevpatoria. A Message from Earth (AMFE) is a high powered digital radio signal that was sent on 9 October 2008 towards Gliese 581 c, a large terrestrial extrasolar planet orbiting the red dwarf star …
43U.S. Military Telegraph Corps — U.S. Military Telegraph battery wagon, Army of the Potomac headquarters, Petersburg, Va., June 1864. Facts About U.S. Military Telegraph Corps Years of Existence: 1861 1866 …
44Cooke and Wheatstone Telegraph — The Cooke and Wheatstone Telegraph was an early telegraph dating from the 1830s. Contents 1 Overview 2 Advantages 3 Disadvantages 4 Obsolescence …
45Letter (message) — The famous Einstein letter from Edward Teller and Leó Szilárd to US President Franklin Roosevelt suggesting an atomic bomb project. Click here for page 2. A letter is a written message from one party to another. The role of letters in… …
46privilege of telegraph company — Absence of liability in transmitting a defamatory message, except where the transmitting agent of the telegraph company happened to know that the message was spurious or that the sender was acting, not in the protection of any legitimate interest …
47Acoustic Telegraph — The Acoustic Telegraph was a method for multiplexing (transmitting more than one) signal on a single telegraph wire. It used signals at different acoustic frequencies. A telegrapher used a conventional Morse key to tap out the message, the key… …
48submarine telegraph — noun 1. : the sending of a message or messages by means of submarine telegraph cable 2. : a system of communication by means of submarine telegraph cable …
49Wireless telegraph — Wireless Wire less, a. Having no wire; specif. (Elec.), designating, or pertaining to, a method of telegraphy, telephony, or other information transmisssion, in which the messages, data, etc., are transmitted through space by electric waves; as,… …
50Hydraulic telegraph — The hydraulic telegraph was a semaphore system invented in the 4th century BC by Aeneas Tacticus; according to Polybius, it was used during the First Punic War to send messages between Sicily and Carthage.The system involved identical containers… …
