What is "electric telegraph"

Telegraph \Tel"e*graph\, n. [Gr. ? far, far off (cf. Lith. toli) + -graph: cf. F. t['e]l['e]graphe. See Graphic.] An apparatus, or a process, for communicating intelligence rapidly between distant points, especially by means of preconcerted visible or audible signals representing words or ideas, or by means of words and signs, transmitted by electrical action.

Note: The instruments used are classed as indicator, type-printing, symbol-printing, or chemical-printing telegraphs, according as the intelligence is given by the movements of a pointer or indicator, as in Cooke & Wheatstone's (the form commonly used in England), or by impressing, on a fillet of paper, letters from types, as in House's and Hughe's, or dots and marks from a sharp point moved by a magnet, as in Morse's, or symbols produced by electro-chemical action, as in Bain's. In the offices in the United States the recording instrument is now little used, the receiving operator reading by ear the combinations of long and short intervals of sound produced by the armature of an electro-magnet as it is put in motion by the opening and breaking of the circuit, which motion, in registering instruments, traces upon a ribbon of paper the lines and dots used to represent the letters of the alphabet. See Illustration in Appendix.

Acoustic telegraph. See under Acoustic.

Dial telegraph, a telegraph in which letters of the alphabet and numbers or other symbols are placed upon the border of a circular dial plate at each station, the apparatus being so arranged that the needle or index of the dial at the receiving station accurately copies the movements of that at the sending station.

Electric telegraph, or Electro-magnetic telegraph, a telegraph in which an operator at one station causes words or signs to be made at another by means of a current of electricity, generated by a battery and transmitted over an intervening wire.

Facsimile telegraph. See under Facsimile.

Indicator telegraph. See under Indicator.

Pan-telegraph, an electric telegraph by means of which a drawing or writing, as an autographic message, may be exactly reproduced at a distant station.

Printing telegraph, an electric telegraph which automatically prints the message as it is received at a distant station, in letters, not signs.

Signal telegraph, a telegraph in which preconcerted signals, made by a machine, or otherwise, at one station, are seen or heard and interpreted at another; a semaphore.

Submarine telegraph cable, a telegraph cable laid under water to connect stations separated by a body of water.

Telegraph cable, a telegraphic cable consisting of several conducting wires, inclosed by an insulating and protecting material, so as to bring the wires into compact compass for use on poles, or to form a strong cable impervious to water, to be laid under ground, as in a town or city, or under water, as in the ocean.

Electric \E*lec"tric\ ([-e]*l[e^]k"tr[i^]k), Electrical \E*lec"tric*al\ ([-e]*l[e^]k"tr[i^]*kal), a. [L. electrum amber, a mixed metal, Gr. 'h`lektron; akin to 'hle`ktwr the beaming sun, cf. Skr. arc to beam, shine: cf. F. ['e]lectrique. The name came from the production of electricity by the friction of amber.]

1. Pertaining to electricity; consisting of, containing, derived from, or produced by, electricity; as, electric power or virtue; an electric jar; electric effects; an electric spark; an electric charge; an electric current; an electrical engineer.

2. Capable of occasioning the phenomena of electricity; as, an electric or electrical machine or substance; an electric generator.

3. Electrifying; thrilling; magnetic. ``Electric Pindar.''
   --Mrs. Browning.

4. powered by electricity; as, electrical appliances; an electric toothbrush; an electric automobile.

   Electric atmosphere, or Electric aura. See under Aura.

   Electrical battery. See Battery.

   Electrical brush. See under Brush.

   Electric cable. See Telegraph cable, under Telegraph.

   Electric candle. See under Candle.

   Electric cat (Zo["o]l.), one of three or more large species of African catfish of the genus Malapterurus (esp. M. electricus of the Nile). They have a large electrical organ and are able to give powerful shocks; -- called also sheathfish.

   Electric clock. See under Clock, and see Electro-chronograph.

   Electric current, a current or stream of electricity traversing a closed circuit formed of conducting substances, or passing by means of conductors from one body to another which is in a different electrical state.

   Electric eel, or Electrical eel (Zo["o]l.), a South American eel-like fresh-water fish of the genus Gymnotus ( G. electricus), from two to five feet in length, capable of giving a violent electric shock. See Gymnotus.

   Electrical fish (Zo["o]l.), any fish which has an electrical organ by means of which it can give an electrical shock. The best known kinds are the torpedo, the gymnotus, or electrical eel, and the electric cat. See Torpedo, and Gymnotus.

   Electric fluid, the supposed matter of electricity; lightning. [archaic]

   Electrical image (Elec.), a collection of electrical points regarded as forming, by an analogy with optical phenomena, an image of certain other electrical points, and used in the solution of electrical problems.
   --Sir W. Thomson.

   Electric machine, or Electrical machine, an apparatus for generating, collecting, or exciting, electricity, as by friction.

   Electric motor. See Electro-motor, 2.

   Electric osmose. (Physics) See under Osmose.

   Electric pen, a hand pen for making perforated stencils for multiplying writings. It has a puncturing needle driven at great speed by a very small magneto-electric engine on the penhandle.

   Electric railway, a railway in which the machinery for moving the cars is driven by an electric current.

   Electric ray (Zo["o]l.), the torpedo.

   Electric telegraph. See Telegraph.