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Transmission line. Schematic of a wave moving rightward down a lossless two-wire transmission line. Black dots represent electrons, and the arrows show the electric field. One of the most common types of transmission line, coaxial cable. In electrical engineering, a transmission line is a specialized cable or other structure designed to conduct ...
The Shannon–Weaver model is one of the first and most influential models of communication. It was initially published in the 1948 paper "A Mathematical Theory of Communication" and explains communication in terms of five basic components: a source, a transmitter, a channel, a receiver, and a destination. The source produces the original message.
The miasma theory (also called the miasmic theory) is an abandoned medical theory that held that diseases —such as cholera, chlamydia, or the Black Death —were caused by a miasma ( μίασμα, Ancient Greek for 'pollution'), a noxious form of "bad air", also known as night air. The theory held that epidemics were caused by miasma ...
The germ theory of disease is the currently accepted scientific theory for many diseases. It states that microorganisms known as pathogens or "germs" can cause disease. These small organisms, too small to be seen without magnification, invade humans, other animals, and other living hosts. Their growth and reproduction within their hosts can ...
Claude Shannon 's development of information theory during World War II provided the next big step in understanding how much information could be reliably communicated through noisy channels. Building on Hartley's foundation, Shannon's noisy channel coding theorem (1948) describes the maximum possible efficiency of error-correcting methods ...
Communication theory is a proposed description of communication phenomena, the relationships among them, a storyline describing these relationships, and an argument for these three elements. Communication theory provides a way of talking about and analyzing key events, processes, and commitments that together form communication.
t. e. Information theory is the mathematical study of the quantification, storage, and communication of information. [1] The field was originally established by the works of Harry Nyquist and Ralph Hartley, in the 1920s, and Claude Shannon in the 1940s. [2] : vii The field, in applied mathematics, is at the intersection of probability theory ...
Linear transmission models describe communication as a one-way process. In it, a sender intentionally conveys a message to a receiver. The reception of the message is the endpoint of this process. Since there is no feedback loop, the sender may not know whether the message reached its intended destination. Most early models were transmission ...