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Designating, or pert. to, Marconi's system of wireless telegraphy; as, Marconi aërial, coherer, station, system, etc.

A system or wireless telegraphy developed by G. Marconi, an Italian physicist, in which Hertzian waves are used in transmission and a coherer is used as the receiving instrument.

The apparatus used in Marconi wireless telegraphy.

The theory or practice of Marconi's wireless telegraph system.

or distance in miles; esp., the sum of lengths of tracks or wires of a railroad company, telegraph company, etc. [Written also milage.] Constructive mileage, a mileage allowed for journeys supposed to be made, but not actually made. Bartlett.

A telegraphic alphabet in very general use, inventing by Samuel F.B.Morse, the inventor of Morse's telegraph. The letters are represented by dots and dashes impressed or printed on paper, as, .- (A), -... (B), -.. (D), . (E), .. (O), ... (R), -- (T), etc., or by sounds, flashes of light, etc., with greater or less inte…

The telegraphic code, consisting of dots, dashes, and spaces, invented by Samuel B. Morse. The Alphabetic code which is in use in North America is given below. In length, or duration, one dash is theoretically equal to three dots; the space between the elements of a letter is equal to one dot; the interval in spaced le…

te. -- Needle shell (Zoöl.), a sea urchin. -- Needle spar (Min.), aragonite. -- Needle telegraph, a telegraph in which the signals are given by the deflections of a magnetic needle to the right or to the left of a certain position. -- Sea needle (Zoöl.), the garfish.

ic oscillations; esp., an apparatus for generating electric waves in a system of wireless telegraphy.

, advocating in an increase of the currency, public ownership and operation of railroads, telegraphs, etc., an income tax, limitation in ownership of land, etc.

ity not existing, obtained by certain arrangements of real circuits, as in some multiplex telegraph systems.

Fourfold; folded or doubled twice. Quadruplex system (Electric Telegraph), a system by which four messages, two in each direction, may be sent simultaneously over the wire.

A radiotelegraphic station serving solely for determining the position of ships. The radius of operation of such stations was restricted by the International Radiotelegraphic Convention (1912) to 30 nautical miles.

A message transmitted by radiotelegraph.

ith an automatic appliance which makes a record of their action; as, a recording gauge or telegraph.

A signal telegraph; an apparatus for giving signals by the disposition of lanterns, flags, oscillating arms, etc.

Of or pertaining to a semaphore, or semaphores; telegraphic.

s, upon comparison of which at the central office, predictions concerning the weather are telegraphed to various sections, where they are made known by signals publicly displayed. -- Signal station, the place where a signal is displayed; specifically, an observation office of the signal service.

Any of various devices to silence the humming noise of telegraph wires.

A current which, though too feeble to blow the usual fuse or to injure at once telegraph or telephone instruments, will in time burn them out.