The Telephone System :: essays research papers

The Teleph angiotensin converting enzyme formationThe hollo is one of the most creative and prized inventions in theworld. It has advanced from its diminished beginnings to its wireless communicationtechnology today and for the future. The inhabitants of the earth have spaciouscommunicated over a outstrip, which has been done by shouting from one hilltopor tower to another. The word "telephone" originated from a combination of 2Greek words "tele", meaning far off, and "phone", meaning vocalize or sound, andbecame the known term for "far- speaking."     A basic telephone ordinarily contains a transmitter, that transfers thecallers voice, and a receiver, that amplifies sound from an incoming call. Inthe transmitter there are devil common kinds of transmitters the coulombtransmitter, and the electret transmitter. The snow transmitter uses carbongranules between metal plates called, electrodes, with one consisting of a thin diaphragm that moves by pressure from sound waves and transmits them to thecarbon granules. These electrodes conduct galvanizingality flowing through thecarbon. The sound waves hit the diaphragm causing the electrical resistance ofthe carbon to vary. The electret transmitter is imperturbable of a thin disk ofmetal-coated plastic held to a higher place a thicker, hollow metal disk. This plastic diskis electrically charged, and creates an electric field. The sound waves fromthe callers voice cause the plastic disk to vibrate, changing the distancebetween the disks, thus changing the intensity of the electric field. Thesevariations are translated into an electric current which travels across thetelephone lines. The receiver of a telephone is composed of a flat remember ofcharismatic material. Underneath this magnetic ring is a coil of wire where theelectric current flows. Here, the current and magnetic field from the magnetcause a diaphragm between the two to vibrate, and replica te the sounds that aretransformed into electricity.     The telephone is also composed of an alerter and a dial. The alerter,usually known as the ringer, alerts a person of a telephone call, created by aspecial frequency of electricity sent by the telephone number typed in. Thedial is the region on the phone where number are pushed or dialed. There aretwo types of dialing systems the carrousel dial, and the Touch-Tone. The rotarydial is a movable circular plate with the numbers one to nine, and zero. TheTouch-Tone system uses buttons that are pushed, instead of the rotary that sendpulses.     The telephone was utter to be invented by many people. However, thefirst to achieve this success, although by accident, was horse parsley Graham Bell.He and his associate were planning to conduct an experiment, when Mr.