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Harold Innis examined the rise and fall of ancient empires as a way of tracing the effects of communications media. He looked at media that led to the growth of an empire; those that sustained it during its periods of success, and then, the communications changes that hastened an empire's collapse.
Through the European Middle Ages and Renaissance grammar, rhetoric, and logic constituted the entire trivium, the base of the system of classical learning in Europe. Communication has existed since the beginning of human beings, but it was not until the 20th century that people began to study the process.
The history of communication technologies (media and appropriate inscription tools) have evolved in tandem with shifts in political and economic systems, and by extension, systems of power. Communication can range from very subtle processes of exchange to full conversations and mass communication.
A History of Communications: Media and Society From the Evolution of Speech to the Internet (Cambridge University Press; 2011) 352 pages; Documents how successive forms of communication are embraced and, in turn, foment change in social institutions. Wheen, Andrew.
The history of information theory as a form of communication theory can be traced through a series of key papers during this time. Harry Nyquist's 1924 paper, Certain Factors Affecting Telegraph Speed, contains a theoretical section quantifying "intelligence" and the "line speed" at which it can be transmitted by a communication system.
Shannon's diagram of a general communications system, showing the process by which a message sent becomes the message received (possibly corrupted by noise) This work is known for introducing the concepts of channel capacity as well as the noisy channel coding theorem. Shannon's article laid out the basic elements of communication:
Emanationism is a theory in the cosmology or cosmogony of certain religious and philosophical systems, that posits the concept of emanation.According to this theory, emanation, from the Latin emanare meaning "to flow from" or "to pour forth or out of", is the mode by which all existing things are derived from a 'first reality', or first principle.
In this essay, Mill argues against the idea that the morality of an action can be judged by whether it is natural or unnatural. [3] He then lays out the two main conceptions of "nature", the first being "the entire system of things" and the second being "things as they would be, apart from human intervention."