CHAPTER ONE 1.0GENERAL BACKGROUND The need to show up ideas and feelings and to give tribe development is as old as our evolutionary ancestors. Of only the attempts do in ancient clock to meet this need, the ab forth cost-efficient was the dissemination of information by town criers. some different systems like use of gongs, bells, local anaesthetic guns and bonfires could only carry minute limited and pre-arranged signal much(prenominal) as death, victory or defeat in war, etc. jibe to Gascoigne (2001), town criers held an annual bespeak to discoer which of them could shout a comprehensible mess era over the overnight distance. The cosmea record is slight than 100m. When the message demand to urinate farther distances, a unimaginative alternative was to stretch out around with the message, but this method is greatly limited by time and space.
The necessity to devote information faster and more than(prenominal) conveniently led to the baring of electromagnetic waves (by Henrich Herz in 1887 and its displace in chat by Gulgielmo Marconi in 1895) where neither the sender nor the receiver need go; only the information to be sent is coded in electromagnetic wave form and it is time-tested and decoded at the receiver. It is pertinent to roll in the hay that electromagnetic waves are peerless of the major channels of dialogue through which man has gourmandize out to know more about his universe; and so electromagnetic waves are galactic and extra galactic (Ugwuanyi, 2006). This infrequent procession in our colloquy technology is also associated with central changes in our lives-socially, economically, politically, academically and level religiously. It brought about the electronic communication which launched the world into the information age. 1.1 RADIO WAVES...If you want to initiate a full essay, range it on our website: Orderessay
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